Check out my profile on Research Gate and on Google Scholar or explore my full publication list below. Most papers are available online through the public repository at HAL CNRS
2010
34.
Jean-François Le Galliard; Olivier Marquis; Manuel Massot
Cohort variation, climate effects and population dynamics in a short-lived lizard Journal Article
In: Journal of Animal Ecology, vol. 79, no. 6, pp. 1296–1307, 2010.
Abstract | Links | BibTeX | Tags:
@article{le_galliard_cohort_2010,
title = {Cohort variation, climate effects and population dynamics in a short-lived lizard},
author = {Jean-François Le Galliard and Olivier Marquis and Manuel Massot},
url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2656.2010.01732.x},
doi = {https://doi.org/10.1111/j.1365-2656.2010.01732.x},
year = {2010},
date = {2010-01-01},
journal = {Journal of Animal Ecology},
volume = {79},
number = {6},
pages = {1296--1307},
abstract = {Cohort variation can be crucial to population dynamics; however, few studies have asked how this can be caused by immediate andtextbackslashor delayed effects of the environment and impact population growth. Here, we quantify cohort effects in the common lizard (Zootoca vivipara), a short-lived ectothermic vertebrate, for body size, reproduction (breeding phenology, clutch size, reproductive failures and offspring size), and age-specific survival with mark-recapture data collected from 1989 to 2005 in two nearby wetlands in southern France. We tested whether temperature and rainfall cause cohort variation by immediate effects andtextbackslashor by delayed effects of climate conditions experienced during gestation or early in life, and assessed cohort covariation in life history traits and consequences for predicted population growth rate. A comprehensive statistical analysis and age-structured population model yielded three major results. Firstly, most traits exhibited significant cohort variation, but cohort variation was stronger for juvenile performance traits, breeding phenology and reproductive failures than for other demographic traits. Secondly, cohort variation was partly explained by a web of immediate and delayed effects of climate conditions. Increased temperatures during gestation were associated with earlier breeding and higher post-parturition body condition, while increased temperatures during the first month of life had delayed positive effects on sub-adult growth. Females experiencing more rainfall during gestation had more reproductive failures and produced smaller offspring that showed higher survival and growth when controlling for their body size. In addition, rainfall during the first month of life was associated with higher juvenile survival but poorer growth. Thus, rainfall and temperature influenced distinct life history traits and the most critical stages for climate effects were gestation and early juvenile life. Thirdly, correlations between cohort means of demographic traits were insignificant, apart for a negative correlation between juvenile and sub-adult body growth suggesting catch-up growth. Cohort variation is predicted to impact population dynamics due to direct, numerical effects of survival variation early in life rather than delayed, quality effects on adult performances. Overall, this study provides unique insights into cohort variation, climate effects and population dynamics in a short-lived reptile species facing global warming.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Cohort variation can be crucial to population dynamics; however, few studies have asked how this can be caused by immediate andtextbackslashor delayed effects of the environment and impact population growth. Here, we quantify cohort effects in the common lizard (Zootoca vivipara), a short-lived ectothermic vertebrate, for body size, reproduction (breeding phenology, clutch size, reproductive failures and offspring size), and age-specific survival with mark-recapture data collected from 1989 to 2005 in two nearby wetlands in southern France. We tested whether temperature and rainfall cause cohort variation by immediate effects andtextbackslashor by delayed effects of climate conditions experienced during gestation or early in life, and assessed cohort covariation in life history traits and consequences for predicted population growth rate. A comprehensive statistical analysis and age-structured population model yielded three major results. Firstly, most traits exhibited significant cohort variation, but cohort variation was stronger for juvenile performance traits, breeding phenology and reproductive failures than for other demographic traits. Secondly, cohort variation was partly explained by a web of immediate and delayed effects of climate conditions. Increased temperatures during gestation were associated with earlier breeding and higher post-parturition body condition, while increased temperatures during the first month of life had delayed positive effects on sub-adult growth. Females experiencing more rainfall during gestation had more reproductive failures and produced smaller offspring that showed higher survival and growth when controlling for their body size. In addition, rainfall during the first month of life was associated with higher juvenile survival but poorer growth. Thus, rainfall and temperature influenced distinct life history traits and the most critical stages for climate effects were gestation and early juvenile life. Thirdly, correlations between cohort means of demographic traits were insignificant, apart for a negative correlation between juvenile and sub-adult body growth suggesting catch-up growth. Cohort variation is predicted to impact population dynamics due to direct, numerical effects of survival variation early in life rather than delayed, quality effects on adult performances. Overall, this study provides unique insights into cohort variation, climate effects and population dynamics in a short-lived reptile species facing global warming.
33.
Marianne Mugabo; Olivier Marquis; Samuel Perret; Jean-François Le Galliard
Immediate and delayed life history effects caused by food restriction early in life in a short-lived lizard Journal Article
In: Journal of Evolutionary Biology, vol. 23, no. 9, pp. 1886–1898, 2010.
Abstract | Links | BibTeX | Tags: asymmetric competition, cohort effects, density, food, life history, performance, stage-structured populations, trade-off
@article{mugabo_immediate_2010,
title = {Immediate and delayed life history effects caused by food restriction early in life in a short-lived lizard},
author = {Marianne Mugabo and Olivier Marquis and Samuel Perret and Jean-François Le Galliard},
url = {https://onlinelibrary.wiley.com/doi/full/10.1111/j.1420-9101.2010.02052.x},
doi = {https://doi.org/10.1111/j.1420-9101.2010.02052.x},
year = {2010},
date = {2010-01-01},
journal = {Journal of Evolutionary Biology},
volume = {23},
number = {9},
pages = {1886--1898},
abstract = {Detailed studies of the mechanisms driving life history effects of food availability are of prime importance to understand the evolution of phenotypic plasticity and the capacity of organisms to produce better adapted phenotypes. Food availability may influence life history trajectories through three nonexclusive mechanisms: (i) immediate and long-lasting effects on individual quality, and indirect delayed effects on (ii) intracohort and (iii) intercohort interactions. Using the common lizard (Zootoca vivipara), we tested whether a food deprivation during the two-first months of life influence life history (growth, survival, reproduction) and performance traits (immunocompetence, locomotor performances) until adulthood. We investigated the underlying mechanisms and their possible interactions by manipulating jointly food availability in a birth cohort and in cohorts of older conspecifics. Food deprivation had direct immediate negative effects on growth but positive long-lasting effects on immunocompetence. Food deprivation had also indirect delayed effects on growth, body size, early survival and reproduction mediated by an interaction between its direct effects on individual quality and its delayed effects on the intensity of intercohort social interactions combined with density dependence on body size. These results demonstrate that interactions between direct and socially mediated effects of past environments influence life history evolution in size-structured and stage-structured populations.},
keywords = {asymmetric competition, cohort effects, density, food, life history, performance, stage-structured populations, trade-off},
pubstate = {published},
tppubtype = {article}
}
Detailed studies of the mechanisms driving life history effects of food availability are of prime importance to understand the evolution of phenotypic plasticity and the capacity of organisms to produce better adapted phenotypes. Food availability may influence life history trajectories through three nonexclusive mechanisms: (i) immediate and long-lasting effects on individual quality, and indirect delayed effects on (ii) intracohort and (iii) intercohort interactions. Using the common lizard (Zootoca vivipara), we tested whether a food deprivation during the two-first months of life influence life history (growth, survival, reproduction) and performance traits (immunocompetence, locomotor performances) until adulthood. We investigated the underlying mechanisms and their possible interactions by manipulating jointly food availability in a birth cohort and in cohorts of older conspecifics. Food deprivation had direct immediate negative effects on growth but positive long-lasting effects on immunocompetence. Food deprivation had also indirect delayed effects on growth, body size, early survival and reproduction mediated by an interaction between its direct effects on individual quality and its delayed effects on the intensity of intercohort social interactions combined with density dependence on body size. These results demonstrate that interactions between direct and socially mediated effects of past environments influence life history evolution in size-structured and stage-structured populations.
2009
32.
Jean Clobert; Jean-François Le Galliard; Julien Cote; Manuel Massot; Sandrine Meylan
Informed dispersal, heterogeneity in animal dispersal syndromes and the dynamics of spatially structured populations Journal Article
In: Ecology Letters, vol. 12, no. 3, pp. 197–209, 2009.
Abstract | Links | BibTeX | Tags:
@article{clobert_informed_2009,
title = {Informed dispersal, heterogeneity in animal dispersal syndromes and the dynamics of spatially structured populations},
author = {Jean Clobert and Jean-François Le Galliard and Julien Cote and Manuel Massot and Sandrine Meylan},
url = {https://onlinelibrary.wiley.com/doi/10.1111/j.1461-0248.2008.01267.x},
doi = {https://doi.org/10.1111/j.1461-0248.2008.01267.x},
year = {2009},
date = {2009-01-01},
journal = {Ecology Letters},
volume = {12},
number = {3},
pages = {197--209},
abstract = {There is accumulating evidence that individuals leave their natal area and select a breeding habitat non-randomly by relying upon information about their natal and future breeding environments. This variation in dispersal is not only based on external information (condition dependence) but also depends upon the internal state of individuals (phenotype dependence). As a consequence, not all dispersers are of the same quality or search for the same habitats. In addition, the individual's state is characterized by morphological, physiological or behavioural attributes that might themselves serve as a cue altering the habitat choice of conspecifics. These combined effects of internal and external information have the potential to generate complex movement patterns and could influence population dynamics and colonization processes. Here, we highlight three particular processes that link condition-dependent dispersal, phenotype-dependent dispersal and habitat choice strategies: (1) the relationship between the cause of departure and the dispersers' phenotype; (2) the relationship between the cause of departure and the settlement behaviour and (3) the concept of informed dispersal, where individuals gather and transfer information before and during their movements through the landscape. We review the empirical evidence for these processes with a special emphasis on vertebrate and arthropod model systems, and present case studies that have quantified the impacts of these processes on spatially structured population dynamics. We also discuss recent literature providing strong evidence that individual variation in dispersal has an important impact on both reinforcement and colonization success and therefore must be taken into account when predicting ecological responses to global warming and habitat fragmentation.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
There is accumulating evidence that individuals leave their natal area and select a breeding habitat non-randomly by relying upon information about their natal and future breeding environments. This variation in dispersal is not only based on external information (condition dependence) but also depends upon the internal state of individuals (phenotype dependence). As a consequence, not all dispersers are of the same quality or search for the same habitats. In addition, the individual's state is characterized by morphological, physiological or behavioural attributes that might themselves serve as a cue altering the habitat choice of conspecifics. These combined effects of internal and external information have the potential to generate complex movement patterns and could influence population dynamics and colonization processes. Here, we highlight three particular processes that link condition-dependent dispersal, phenotype-dependent dispersal and habitat choice strategies: (1) the relationship between the cause of departure and the dispersers' phenotype; (2) the relationship between the cause of departure and the settlement behaviour and (3) the concept of informed dispersal, where individuals gather and transfer information before and during their movements through the landscape. We review the empirical evidence for these processes with a special emphasis on vertebrate and arthropod model systems, and present case studies that have quantified the impacts of these processes on spatially structured population dynamics. We also discuss recent literature providing strong evidence that individual variation in dispersal has an important impact on both reinforcement and colonization success and therefore must be taken into account when predicting ecological responses to global warming and habitat fragmentation.
31.
Katrine Hoset; Jean-François Le Galliard; Gry Gundersen
Demographic responses to a mild winter in enclosed vole populations Journal Article
In: Population Ecology, vol. 51, no. 2, pp. 279–288, 2009, ISSN: 1438-3896.
Abstract | Links | BibTeX | Tags: behaviour, climate change, food, Microtus oeconomus, small mammals, small mammals, small mammals, small mammals, space use, survival
@article{hoset_demographic_2009,
title = {Demographic responses to a mild winter in enclosed vole populations},
author = {Katrine Hoset and Jean-François Le Galliard and Gry Gundersen},
url = {http:ws.isiknowledge.comcpsøpenurlservice?url_ver=Z39.88-2004&rft_id=info:ut000264328900007},
doi = {DOI: 10.1007/s10144-008-0130-4},
issn = {1438-3896},
year = {2009},
date = {2009-01-01},
journal = {Population Ecology},
volume = {51},
number = {2},
pages = {279--288},
abstract = {Mild winter weather causing snow to melt and ice to accumulate on the ground has been proposed to cause the decreased survival of individuals, and less pronounced cyclicity, of small rodent populations in Fennoscandia. However, detailed data linking ice accumulation to decreased winter survival is lacking. We live-trapped and monitored with passive integrated transponders enclosed populations of root voles (Microtus oeconomus) exposed to different amounts of ice accumulation through a mild winter. We studied how social behaviour and survival responded to snow melt and ice accumulation. Voles avoided ground ice by moving their home ranges, thus increasing home range overlap in enclosed populations experiencing more extensive ice cover. Winter survival was not affected by the amount of ice accumulation, and was only slightly reduced during ice formation in early winter. The lowest survival rates were found at the onset of snow melt in early spring. These results suggest that ice accumulation does not cause lower survival during mild winters, probably because plastic social behaviour enables root voles to reduce the negative effects of varying winter weather on survival. The mechanisms for lower survival during mild winters may operate during spring and be related to spring floods or increased susceptibility to predators.},
keywords = {behaviour, climate change, food, Microtus oeconomus, small mammals, small mammals, small mammals, small mammals, space use, survival},
pubstate = {published},
tppubtype = {article}
}
Mild winter weather causing snow to melt and ice to accumulate on the ground has been proposed to cause the decreased survival of individuals, and less pronounced cyclicity, of small rodent populations in Fennoscandia. However, detailed data linking ice accumulation to decreased winter survival is lacking. We live-trapped and monitored with passive integrated transponders enclosed populations of root voles (Microtus oeconomus) exposed to different amounts of ice accumulation through a mild winter. We studied how social behaviour and survival responded to snow melt and ice accumulation. Voles avoided ground ice by moving their home ranges, thus increasing home range overlap in enclosed populations experiencing more extensive ice cover. Winter survival was not affected by the amount of ice accumulation, and was only slightly reduced during ice formation in early winter. The lowest survival rates were found at the onset of snow melt in early spring. These results suggest that ice accumulation does not cause lower survival during mild winters, probably because plastic social behaviour enables root voles to reduce the negative effects of varying winter weather on survival. The mechanisms for lower survival during mild winters may operate during spring and be related to spring floods or increased susceptibility to predators.
2008
30.
Julien Cote; Jean-François Le Galliard; Jean-Marc Rossi; Patrick S Fitze
Environmentally induced changes in carotenoid-based coloration of female lizards: a comment on Vercken et al Journal Article
In: Journal of Evolutionary Biology, vol. 21, no. 4, pp. 1165–1172, 2008, ISSN: 1010-061X.
Abstract | Links | BibTeX | Tags:
@article{cote_environmentally_2008,
title = {Environmentally induced changes in carotenoid-based coloration of female lizards: a comment on Vercken et al},
author = {Julien Cote and Jean-François Le Galliard and Jean-Marc Rossi and Patrick S Fitze},
url = {https://onlinelibrary.wiley.com/doi/full/10.1111/j.1420-9101.2008.01534.x},
doi = {https://doi.org/10.1111/j.1420-9101.2008.01534.x},
issn = {1010-061X},
year = {2008},
date = {2008-01-01},
journal = {Journal of Evolutionary Biology},
volume = {21},
number = {4},
pages = {1165--1172},
abstract = {Colouration may either reflect a discrete polymorphism potentially related to life-history strategies, a continuous signal related to individual quality or a combination of both. Recently, Vercken et al. [J. Evol. Biol. (2007) 221] proposed three discrete ventral colour morphs in female common lizards, Lacerta vivipara, and suggested that they reflect alternative reproductive strategies. Here, we provide a quantitative assessment of the phenotypic distribution and determinants of the proposed colour polymorphism. Based on reflectance spectra, we found no evidence for three distinct visual colour classes, but observed continuous variation in colour from pale yellow to orange. Based on a 2-year experiment, we also provide evidence for reversible colour plasticity in response to a manipulation of the adult population sex ratio; yet, a significant portion of the colour variation was invariant throughout an adult female's life. Our results are thus in agreement with continuous colour variation in adults determined by environmental factors and potentially also by genetic factors.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Colouration may either reflect a discrete polymorphism potentially related to life-history strategies, a continuous signal related to individual quality or a combination of both. Recently, Vercken et al. [J. Evol. Biol. (2007) 221] proposed three discrete ventral colour morphs in female common lizards, Lacerta vivipara, and suggested that they reflect alternative reproductive strategies. Here, we provide a quantitative assessment of the phenotypic distribution and determinants of the proposed colour polymorphism. Based on reflectance spectra, we found no evidence for three distinct visual colour classes, but observed continuous variation in colour from pale yellow to orange. Based on a 2-year experiment, we also provide evidence for reversible colour plasticity in response to a manipulation of the adult population sex ratio; yet, a significant portion of the colour variation was invariant throughout an adult female's life. Our results are thus in agreement with continuous colour variation in adults determined by environmental factors and potentially also by genetic factors.
29.
Patrick S Fitze; Jean-François Le Galliard
Operational sex ratio, sexual conflict and the intensity of sexual selection Journal Article
In: Ecology Letters, vol. 11, pp. 432–439, 2008.
Abstract | Links | BibTeX | Tags: sex ratio, sex ratio, sexual conflict, trade-off, Zootoca vivipara
@article{fitze_operational_2008,
title = {Operational sex ratio, sexual conflict and the intensity of sexual selection},
author = {Patrick S Fitze and Jean-François Le Galliard},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1461-0248.2008.01158.x},
doi = {https://doi.org/10.1111/j.1461-0248.2008.01158.x},
year = {2008},
date = {2008-01-01},
journal = {Ecology Letters},
volume = {11},
pages = {432--439},
abstract = {Modern sexual selection theory indicates that reproductive costs rather than the
operational sex ratio predict the intensity of sexual selection. We investigated sexual
selection in the polygynandrous common lizard Lacerta vivipara. This species shows male
aggression, causing high mating costs for females when adult sex ratios (ASR) are malebiased.
We manipulated ASR in 12 experimental populations and quantified the intensity
of sexual selection based on the relationship between reproductive success and body
size. In sharp contrast to classical sexual selection theory predictions, positive directional
sexual selection on male size was stronger and positive directional selection on female
size weaker in female-biased populations than in male-biased populations. Thus,
consistent with modern theory, directional sexual selection on male size was weaker in
populations with higher female mating costs. This suggests that the costs of breeding,
but not the operational sex ratio, correctly predicted the strength of sexual selection.},
keywords = {sex ratio, sex ratio, sexual conflict, trade-off, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
Modern sexual selection theory indicates that reproductive costs rather than the
operational sex ratio predict the intensity of sexual selection. We investigated sexual
selection in the polygynandrous common lizard Lacerta vivipara. This species shows male
aggression, causing high mating costs for females when adult sex ratios (ASR) are malebiased.
We manipulated ASR in 12 experimental populations and quantified the intensity
of sexual selection based on the relationship between reproductive success and body
size. In sharp contrast to classical sexual selection theory predictions, positive directional
sexual selection on male size was stronger and positive directional selection on female
size weaker in female-biased populations than in male-biased populations. Thus,
consistent with modern theory, directional sexual selection on male size was weaker in
populations with higher female mating costs. This suggests that the costs of breeding,
but not the operational sex ratio, correctly predicted the strength of sexual selection.
operational sex ratio predict the intensity of sexual selection. We investigated sexual
selection in the polygynandrous common lizard Lacerta vivipara. This species shows male
aggression, causing high mating costs for females when adult sex ratios (ASR) are malebiased.
We manipulated ASR in 12 experimental populations and quantified the intensity
of sexual selection based on the relationship between reproductive success and body
size. In sharp contrast to classical sexual selection theory predictions, positive directional
sexual selection on male size was stronger and positive directional selection on female
size weaker in female-biased populations than in male-biased populations. Thus,
consistent with modern theory, directional sexual selection on male size was weaker in
populations with higher female mating costs. This suggests that the costs of breeding,
but not the operational sex ratio, correctly predicted the strength of sexual selection.
28.
Katrine S Hoset; Jean-François Le Galliard; Gry Gundersen; Harald Steen
Home range size and overlap in female root voles: effects of season and density Journal Article
In: Behavioral Ecology, vol. 19, no. 1, pp. 139–145, 2008, ISSN: 1045-2249.
Abstract | Links | BibTeX | Tags: density, mating system, Microtus oeconomus, Microtus oeconomus, small mammals, small mammals, small mammals, small mammals, small mammals, space use, space use
@article{hoset_home_2008,
title = {Home range size and overlap in female root voles: effects of season and density},
author = {Katrine S Hoset and Jean-François Le Galliard and Gry Gundersen and Harald Steen},
url = {https://academic.oup.com/beheco/article/19/1/139/228927},
doi = {https://doi.org/10.1093/beheco/arm112},
issn = {1045-2249},
year = {2008},
date = {2008-01-01},
journal = {Behavioral Ecology},
volume = {19},
number = {1},
pages = {139--145},
abstract = {In small mammals living in highly seasonal environments, observational studies show that female home range size and exclusiveness are smaller in the nonbreeding winter season than in the breeding summer season. This has led to the notion that nonbreeding females are more social and decrease territorial behavior during winter. However, because territoriality decreases with increasing population density, and density normally increases during the breeding season, the effects of density and season on social structure are usually confounded. To find out which of the 2 factors explains space use, we experimentally established 3 high-density and 3 low-density root vole (Microtus oeconomus) populations in late spring and monitored the populations into the nonbreeding winter season. Population sizes were controlled throughout the breeding period to minimize seasonal variation in density. Home range sizes were larger in founder females than in field-born females but did not change with season or density. Area exclusively used by individual females was lower in winter than summer, and founder females decreased exclusiveness as density increased. We argue that this seasonal pattern of space use might be caused by variation in benefits of group living, whereas founder females also responded to density-dependent competition by reducing area exclusively used.},
keywords = {density, mating system, Microtus oeconomus, Microtus oeconomus, small mammals, small mammals, small mammals, small mammals, small mammals, space use, space use},
pubstate = {published},
tppubtype = {article}
}
In small mammals living in highly seasonal environments, observational studies show that female home range size and exclusiveness are smaller in the nonbreeding winter season than in the breeding summer season. This has led to the notion that nonbreeding females are more social and decrease territorial behavior during winter. However, because territoriality decreases with increasing population density, and density normally increases during the breeding season, the effects of density and season on social structure are usually confounded. To find out which of the 2 factors explains space use, we experimentally established 3 high-density and 3 low-density root vole (Microtus oeconomus) populations in late spring and monitored the populations into the nonbreeding winter season. Population sizes were controlled throughout the breeding period to minimize seasonal variation in density. Home range sizes were larger in founder females than in field-born females but did not change with season or density. Area exclusively used by individual females was lower in winter than summer, and founder females decreased exclusiveness as density increased. We argue that this seasonal pattern of space use might be caused by variation in benefits of group living, whereas founder females also responded to density-dependent competition by reducing area exclusively used.
27.
Duncan J Irschick; Jean-François Le Galliard
Studying the evolution of whole-organism performance capacity: sex, selection, and haiku - an introduction Journal Article
In: Evolutionary Ecology Research, vol. 10, no. 2, pp. 155–156, 2008, ISSN: 1522-0613.
@article{irschick_studying_2008,
title = {Studying the evolution of whole-organism performance capacity: sex, selection, and haiku - an introduction},
author = {Duncan J Irschick and Jean-François Le Galliard},
url = {http://www.evolutionary-ecology.com/open/ccarIrschick.pdf},
issn = {1522-0613},
year = {2008},
date = {2008-01-01},
journal = {Evolutionary Ecology Research},
volume = {10},
number = {2},
pages = {155--156},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
26.
Duncan J Irschick; Jerry J Meyers; Jerry F Husak; Jean-François Le Galliard
How does selection operate on whole-organism functional performance capacities? A review and synthesis Journal Article
In: Evolutionary Ecology Research, vol. 10, no. 2, pp. 177–196, 2008, ISSN: 1522-0613.
Abstract | Links | BibTeX | Tags:
@article{irschick_how_2008,
title = {How does selection operate on whole-organism functional performance capacities? A review and synthesis},
author = {Duncan J Irschick and Jerry J Meyers and Jerry F Husak and Jean-François Le Galliard},
url = {https://www.evolutionary-ecology.com/abstracts/v10/2270.html},
issn = {1522-0613},
year = {2008},
date = {2008-01-01},
journal = {Evolutionary Ecology Research},
volume = {10},
number = {2},
pages = {177--196},
abstract = {Hypothesis: Natural and sexual selection should be stronger on whole-organism functional performance traits (sprinting, biting) than on correlated morphological variables. Organisms: Lizards, snakes, turtles, frogs, and fish (review of past field and laboratory studies). Field sites: Various (review of past field and laboratory studies). Methods: We reviewed existing literature on the nature and intensity of natural and sexual selection on whole-organism performance traits. We answer some key questions in regards to how selection operates on performance, and whether. selection is stronger on performance compared with morphological traits. Results: We identified 23 studies that have quantified selection on performance. Natural and sexual selection were typically directional in nature, with a distinct preference for high rather than low values of performance. However, some studies uncovered no significant selection on performance, and there was also no evidence that selection was stronger on performance traits than morphological traits.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Hypothesis: Natural and sexual selection should be stronger on whole-organism functional performance traits (sprinting, biting) than on correlated morphological variables. Organisms: Lizards, snakes, turtles, frogs, and fish (review of past field and laboratory studies). Field sites: Various (review of past field and laboratory studies). Methods: We reviewed existing literature on the nature and intensity of natural and sexual selection on whole-organism performance traits. We answer some key questions in regards to how selection operates on performance, and whether. selection is stronger on performance compared with morphological traits. Results: We identified 23 studies that have quantified selection on performance. Natural and sexual selection were typically directional in nature, with a distinct preference for high rather than low values of performance. However, some studies uncovered no significant selection on performance, and there was also no evidence that selection was stronger on performance traits than morphological traits.
25.
Jean-François Le Galliard; Régis Ferrière
Evolution of maximal endurance capacity: natural and sexual selection across age classes in a lizard Journal Article
In: Evolutionary Ecology Research, vol. 10, no. 2, pp. 157–176, 2008, ISSN: 1522-0613.
Abstract | Links | BibTeX | Tags:
@article{le_galliard_evolution_2008,
title = {Evolution of maximal endurance capacity: natural and sexual selection across age classes in a lizard},
author = {Jean-François Le Galliard and Régis Ferrière},
url = {http://evolutionary-ecology.com/abstracts/v10n02/ddar2246.pdf},
issn = {1522-0613},
year = {2008},
date = {2008-01-01},
journal = {Evolutionary Ecology Research},
volume = {10},
number = {2},
pages = {157--176},
abstract = {Hypothesis: One of the basic tenets of evolutionary physiology is that physical performances and fitness are tightly linked. Question: Are phenotypes with exceptional locomotor capacity strongly favoured by natural and sexual selection? Organism: A ground-dwelling, actively foraging and non-territorial lizard species, Lacerta vivipara. Methods: We analysed the relationship between morphology (body size and condition) and maximal endurance capacity in three age classes (juveniles, yearlings, and adult males). We then tested whether morphology and endurance capacity predicted variation in annual body growth, annual survival, and reproductive success. Results: The large variation in maximal endurance capacity observed at hatching has a genetic basis. Endurance capacity increased with body size in juveniles and with body condition in juveniles and yearlings. Endurance capacity was not correlated with annual body growth at any age class. Positive, directional viability selection on endurance capacity was detected for juveniles and yearlings, but not for adult males. Endurance capacity was weakly, positively correlated with male reproductive success. Natural selection in juveniles and sexual selection in adult males was non-linear and the strength of selection decelerated with endurance capacity. Conclusion: In the common lizard, selection on maximal performances is non-linear and varies between age classes. This pattern of weak and inconsistent selection could explain the maintenance of considerable genetic variation of locomotor performance within populations.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Hypothesis: One of the basic tenets of evolutionary physiology is that physical performances and fitness are tightly linked. Question: Are phenotypes with exceptional locomotor capacity strongly favoured by natural and sexual selection? Organism: A ground-dwelling, actively foraging and non-territorial lizard species, Lacerta vivipara. Methods: We analysed the relationship between morphology (body size and condition) and maximal endurance capacity in three age classes (juveniles, yearlings, and adult males). We then tested whether morphology and endurance capacity predicted variation in annual body growth, annual survival, and reproductive success. Results: The large variation in maximal endurance capacity observed at hatching has a genetic basis. Endurance capacity increased with body size in juveniles and with body condition in juveniles and yearlings. Endurance capacity was not correlated with annual body growth at any age class. Positive, directional viability selection on endurance capacity was detected for juveniles and yearlings, but not for adult males. Endurance capacity was weakly, positively correlated with male reproductive success. Natural selection in juveniles and sexual selection in adult males was non-linear and the strength of selection decelerated with endurance capacity. Conclusion: In the common lizard, selection on maximal performances is non-linear and varies between age classes. This pattern of weak and inconsistent selection could explain the maintenance of considerable genetic variation of locomotor performance within populations.
24.
Jean-François Le Galliard; Julien Cote; Patrick S Fitze
Lifetime and intergenerational fitness consequences of harmful male interactions for female lizards Journal Article
In: Ecology, vol. 89, no. 1, pp. 56–64, 2008, ISSN: 0012-9658.
Abstract | Links | BibTeX | Tags:
@article{le_galliard_lifetime_2008,
title = {Lifetime and intergenerational fitness consequences of harmful male interactions for female lizards},
author = {Jean-François Le Galliard and Julien Cote and Patrick S Fitze},
url = {https://www.jstor.org/stable/27651508},
doi = {https://doi.org/10.1890/06-2076.1},
issn = {0012-9658},
year = {2008},
date = {2008-01-01},
journal = {Ecology},
volume = {89},
number = {1},
pages = {56--64},
abstract = {Male mating behaviors harmful to females have been described in a wide range of species. However, the direct and indirect fitness consequences of harmful male behaviors have been rarely quantified for females and their offspring, especially for long-lived organisms under natural conditions. Here, lifetime and intergenerational consequences of harmful male interactions were investigated in female common lizards (Lacerta vivipara) using field experiments. We exposed females to male harm by changing the population sex ratio from a normal female-biased to an experimental male-biased sex ratio during the first experimental year. Thereafter, females and their first generation of offspring were monitored during two additional years in a common garden with a female-biased sex ratio. We found strong immediate fitness costs and lower lifetime reproductive success in females subjected to increased male exposure. The immediate fitness costs were partly mitigated by direct compensatory responses after exposure to male excess, but not by indirect benefits through offspring growth, offspring survival, or mating success of offspring. These results, support recent empirical findings showing that the direct costs of mating are not outweighed by indirect benefits.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Male mating behaviors harmful to females have been described in a wide range of species. However, the direct and indirect fitness consequences of harmful male behaviors have been rarely quantified for females and their offspring, especially for long-lived organisms under natural conditions. Here, lifetime and intergenerational consequences of harmful male interactions were investigated in female common lizards (Lacerta vivipara) using field experiments. We exposed females to male harm by changing the population sex ratio from a normal female-biased to an experimental male-biased sex ratio during the first experimental year. Thereafter, females and their first generation of offspring were monitored during two additional years in a common garden with a female-biased sex ratio. We found strong immediate fitness costs and lower lifetime reproductive success in females subjected to increased male exposure. The immediate fitness costs were partly mitigated by direct compensatory responses after exposure to male excess, but not by indirect benefits through offspring growth, offspring survival, or mating success of offspring. These results, support recent empirical findings showing that the direct costs of mating are not outweighed by indirect benefits.
23.
Olivier Marquis; Manuel Massot; Jean-François Le Galliard
Intergenerational effects of climate generate cohort variation in lizard reproductive performance Journal Article
In: Ecology, vol. 89, no. 9, pp. 2575–2583, 2008.
Abstract | Links | BibTeX | Tags: climate change, intergenerational effect, life history, maternal effect, phenotypic plasticity, Zootoca vivipara
@article{marquis_intergenerational_2008,
title = {Intergenerational effects of climate generate cohort variation in lizard reproductive performance},
author = {Olivier Marquis and Manuel Massot and Jean-François Le Galliard},
url = {https://esajournals.onlinelibrary.wiley.com/doi/10.1890/07-1211.1},
doi = {https://doi.org/10.1890/07-1211.1},
year = {2008},
date = {2008-01-01},
journal = {Ecology},
volume = {89},
number = {9},
pages = {2575--2583},
abstract = {An evaluation of the link between climate and population dynamics requires
understanding of climate effects both within and across generations. In ectothermic
vertebrates, demographic responses to climate changes should crucially depend on balancing
needs for heat and water. Here, we studied how temperature and rainfall regimes experienced
before and during adulthood influenced reproductive performances (litter size, offspring size,
and survival) in a natural population of the live-bearing common lizard, Lacerta vivipara,
monitored continuously from 1989 to 2004. Rainfall regime, but not temperature, had both
immediate and delayed effects on these reproductive performances. Rainfall during the first
month of life was positively correlated with juvenile survival. Females experiencing more
rainfall during gestation produced smaller neonates that showed greater survival when
controlling for the positive effect of body size on survival. Furthermore, females that
experienced heavier rainfall when in utero produced fewer but longer neonates during
adulthood. These demographic effects of rainfall on adult reproductive traits may come from
maternal effects of climate conditions andtextbackslashor from delayed effects of rainfall on the
environment experienced early in life. Irrespective of the precise mechanism, however, this
study provides evidence of intergenerational climate effects in natural populations of an
ectothermic vertebrate.},
keywords = {climate change, intergenerational effect, life history, maternal effect, phenotypic plasticity, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
An evaluation of the link between climate and population dynamics requires
understanding of climate effects both within and across generations. In ectothermic
vertebrates, demographic responses to climate changes should crucially depend on balancing
needs for heat and water. Here, we studied how temperature and rainfall regimes experienced
before and during adulthood influenced reproductive performances (litter size, offspring size,
and survival) in a natural population of the live-bearing common lizard, Lacerta vivipara,
monitored continuously from 1989 to 2004. Rainfall regime, but not temperature, had both
immediate and delayed effects on these reproductive performances. Rainfall during the first
month of life was positively correlated with juvenile survival. Females experiencing more
rainfall during gestation produced smaller neonates that showed greater survival when
controlling for the positive effect of body size on survival. Furthermore, females that
experienced heavier rainfall when in utero produced fewer but longer neonates during
adulthood. These demographic effects of rainfall on adult reproductive traits may come from
maternal effects of climate conditions andtextbackslashor from delayed effects of rainfall on the
environment experienced early in life. Irrespective of the precise mechanism, however, this
study provides evidence of intergenerational climate effects in natural populations of an
ectothermic vertebrate.
understanding of climate effects both within and across generations. In ectothermic
vertebrates, demographic responses to climate changes should crucially depend on balancing
needs for heat and water. Here, we studied how temperature and rainfall regimes experienced
before and during adulthood influenced reproductive performances (litter size, offspring size,
and survival) in a natural population of the live-bearing common lizard, Lacerta vivipara,
monitored continuously from 1989 to 2004. Rainfall regime, but not temperature, had both
immediate and delayed effects on these reproductive performances. Rainfall during the first
month of life was positively correlated with juvenile survival. Females experiencing more
rainfall during gestation produced smaller neonates that showed greater survival when
controlling for the positive effect of body size on survival. Furthermore, females that
experienced heavier rainfall when in utero produced fewer but longer neonates during
adulthood. These demographic effects of rainfall on adult reproductive traits may come from
maternal effects of climate conditions andtextbackslashor from delayed effects of rainfall on the
environment experienced early in life. Irrespective of the precise mechanism, however, this
study provides evidence of intergenerational climate effects in natural populations of an
ectothermic vertebrate.
22.
Frank Rosell; Gry Gundersen; Jean-François Le Galliard
Territory ownership and familiarity status affect how much male root voles (Microtus oeconomus) invest in territory defence Journal Article
In: Behavioral Ecology and Sociobiology, vol. 62, no. 10, pp. 1559–1568, 2008, ISSN: 0340-5443.
Abstract | Links | BibTeX | Tags:
@article{rosell_territory_2008,
title = {Territory ownership and familiarity status affect how much male root voles (Microtus oeconomus) invest in territory defence},
author = {Frank Rosell and Gry Gundersen and Jean-François Le Galliard},
url = {https://link.springer.com/article/10.1007/s00265-008-0585-5},
doi = {https://doi.org/10.1007/s00265-008-0585-5},
issn = {0340-5443},
year = {2008},
date = {2008-01-01},
journal = {Behavioral Ecology and Sociobiology},
volume = {62},
number = {10},
pages = {1559--1568},
abstract = {Neighbour-stranger discrimination occurs when individuals respond with more aggression to strangers than to territorial neighbours-a phenomenon termed the "dear enemy phenomenon" (DEP). We investigated the DEP with male and female root voles (Microtus oeconomus Pallas 1776) using field dyadic arena tests conducted in enclosures where we could test for the effects of familiarity (familiar versus stranger), ownership (resident versus intruder status) and resource-holding potential (body mass) on territorial behaviours. The results showed that males put more effort into territorial defence than females, and males could discriminate between neighbours and strangers. In males, aggressiveness was influenced by a significant two-way interaction between treatment and ownership. Male residents were more aggressive towards stranger intruders than towards neighbour intruders, while male intruders were less aggressive towards stranger residents than towards neighbour residents. In females, neither treatment nor ownership status had a significant effect on aggressiveness. Familiar males performed more social behaviours but less non-social behaviours than stranger males. Furthermore, there was a clear dominance hierarchy between residents and intruders in stranger dyads, with the male territory holders dominating the intruder in pairwise interactions. To our knowledge, these results demonstrate for the first time DEP in a small mammal with a known pedigree and present the first evidence for "prior resident advantage" in voles. We argue that both ownership status and familiarity status affect how much an individual invests in territory defence. The benefits of neighbour-stranger discrimination for male root voles and the absence of neighbour-stranger discrimination in female root voles are discussed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Neighbour-stranger discrimination occurs when individuals respond with more aggression to strangers than to territorial neighbours-a phenomenon termed the "dear enemy phenomenon" (DEP). We investigated the DEP with male and female root voles (Microtus oeconomus Pallas 1776) using field dyadic arena tests conducted in enclosures where we could test for the effects of familiarity (familiar versus stranger), ownership (resident versus intruder status) and resource-holding potential (body mass) on territorial behaviours. The results showed that males put more effort into territorial defence than females, and males could discriminate between neighbours and strangers. In males, aggressiveness was influenced by a significant two-way interaction between treatment and ownership. Male residents were more aggressive towards stranger intruders than towards neighbour intruders, while male intruders were less aggressive towards stranger residents than towards neighbour residents. In females, neither treatment nor ownership status had a significant effect on aggressiveness. Familiar males performed more social behaviours but less non-social behaviours than stranger males. Furthermore, there was a clear dominance hierarchy between residents and intruders in stranger dyads, with the male territory holders dominating the intruder in pairwise interactions. To our knowledge, these results demonstrate for the first time DEP in a small mammal with a known pedigree and present the first evidence for "prior resident advantage" in voles. We argue that both ownership status and familiarity status affect how much an individual invests in territory defence. The benefits of neighbour-stranger discrimination for male root voles and the absence of neighbour-stranger discrimination in female root voles are discussed.
21.
Jean-François Le Galliard; Régis Ferrière
The adaptive evolution of social traits Book Chapter
In: Danchin, Etienne; Giraldeau, Luc-Alain; Cézilly, Frank (Ed.): Behavioural ecology, pp. 547–575, Oxford University Press, Oxford, UK, 2008.
BibTeX | Tags:
@inbook{le_galliard_adaptive_2008,
title = {The adaptive evolution of social traits},
author = {Jean-François Le Galliard and Régis Ferrière},
editor = {Etienne Danchin and Luc-Alain Giraldeau and Frank Cézilly},
year = {2008},
date = {2008-01-01},
booktitle = {Behavioural ecology},
pages = {547--575},
publisher = {Oxford University Press},
address = {Oxford, UK},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
2007
20.
Jean-François Le Galliard; Gry Gundersen; Harald Steen
Mother-offspring interactions do not affect natal dispersal in a small rodent Journal Article
In: Behavioral Ecology, vol. 18, no. 4, pp. 665–673, 2007.
Links | BibTeX | Tags: dispersal, dispersal, inbreeding avoidance, kin competition, mammals, reproduction, social system
@article{le_galliard_mother-offspring_2007,
title = {Mother-offspring interactions do not affect natal dispersal in a small rodent},
author = {Jean-François Le Galliard and Gry Gundersen and Harald Steen},
url = {https://academic.oup.com/beheco/article/18/4/665/203331},
doi = {https://doi.org/10.1093/beheco/arm023},
year = {2007},
date = {2007-01-01},
journal = {Behavioral Ecology},
volume = {18},
number = {4},
pages = {665--673},
keywords = {dispersal, dispersal, inbreeding avoidance, kin competition, mammals, reproduction, social system},
pubstate = {published},
tppubtype = {article}
}
19.
Patrick S Fitze; Jean-François Le Galliard; Pierre Federici; Muriele Richard; Jean Clobert
Conflict over multiple-partner mating between males and females of the polygynandrous common lizards Journal Article
In: Evolution, vol. 59, no. 11, pp. 2451–2459, 2007.
Links | BibTeX | Tags: sexual conflict, sexual harassment, sexual selection, Zootoca vivipara
@article{fitze_conflict_2007,
title = {Conflict over multiple-partner mating between males and females of the polygynandrous common lizards},
author = {Patrick S Fitze and Jean-François Le Galliard and Pierre Federici and Muriele Richard and Jean Clobert},
url = {https://bioone.org/journals/Evolution/volume-59/issue-11/05-208.1/CONFLICT-OVER-MULTIPLE-PARTNER-MATING-BETWEEN-MALES-AND-FEMALES-OF/10.1554/05-208.1.short},
doi = {https://doi.org/10.1554/05-208.1},
year = {2007},
date = {2007-01-01},
urldate = {2007-01-01},
journal = {Evolution},
volume = {59},
number = {11},
pages = {2451--2459},
keywords = {sexual conflict, sexual harassment, sexual selection, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
18.
Jean-Francois Le Galliard; Régis Ferrière
Physical performance and fitness in lizards Conference
Journal of Morphology, vol. 268, WILEY-LISS DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA, 2007.
BibTeX | Tags: natural selection
@conference{le_galliard_physical_2007,
title = {Physical performance and fitness in lizards},
author = {Jean-Francois Le Galliard and Régis Ferrière},
year = {2007},
date = {2007-01-01},
booktitle = {Journal of Morphology},
volume = {268},
pages = {1098--1098},
publisher = {WILEY-LISS DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA},
keywords = {natural selection},
pubstate = {published},
tppubtype = {conference}
}
2006
17.
Jean-François Le Galliard; Gry Gundersen; Harry P Andreassen; Nils C Stenseth
Natal dispersal, interactions among siblings and intrasexual competition Journal Article
In: Behavioral Ecology, vol. 17, no. 5, pp. 733–740, 2006.
Links | BibTeX | Tags: competition, dispersal, inbreeding avoidance, infanticide, kin cooperation, reproduction
@article{le_galliard_natal_2006,
title = {Natal dispersal, interactions among siblings and intrasexual competition},
author = {Jean-François Le Galliard and Gry Gundersen and Harry P Andreassen and Nils C Stenseth},
url = {https://academic.oup.com/beheco/article/17/5/733/206909},
doi = {https://doi.org/10.1093/beheco/arl002},
year = {2006},
date = {2006-01-01},
journal = {Behavioral Ecology},
volume = {17},
number = {5},
pages = {733--740},
keywords = {competition, dispersal, inbreeding avoidance, infanticide, kin cooperation, reproduction},
pubstate = {published},
tppubtype = {article}
}
16.
Jean-François Le Galliard; Manuel Massot; Meta M Landys; Sandrine Meylan; Jean Clobert
Ontogenic sources of variation in sexual size dimorphism in a viviparous lizard Journal Article
In: Journal of Evolutionary Biology, vol. 19, no. 3, pp. 690–704, 2006.
BibTeX | Tags: body size, maternal effect, phenotypic plasticity, sexual size dimorphism, viviparity, Zootoca vivipara
@article{le_galliard_ontogenic_2006-1,
title = {Ontogenic sources of variation in sexual size dimorphism in a viviparous lizard},
author = {Jean-François Le Galliard and Manuel Massot and Meta M Landys and Sandrine Meylan and Jean Clobert},
year = {2006},
date = {2006-01-01},
journal = {Journal of Evolutionary Biology},
volume = {19},
number = {3},
pages = {690--704},
keywords = {body size, maternal effect, phenotypic plasticity, sexual size dimorphism, viviparity, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
2005
15.
Patrick F Fitze; Jean-François Le Galliard; Pierre Federici; Murielle Richard; Jean Clobert
Conflict over multiple partner mating among males and females of polygynandrous common lizards Journal Article
In: Evolution, vol. 59, no. 11, pp. 2451–2459, 2005.
Links | BibTeX | Tags: mating system, sex ratio, sexual conflict, sexual selection, sexual selection, squamate reptiles, Zootoca vivipara
@article{fitze_conflict_2005,
title = {Conflict over multiple partner mating among males and females of polygynandrous common lizards},
author = {Patrick F Fitze and Jean-François Le Galliard and Pierre Federici and Murielle Richard and Jean Clobert},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/j.0014-3820.2005.tb00954.x},
doi = {https://doi.org/10.1111/j.0014-3820.2005.tb00954.x},
year = {2005},
date = {2005-01-01},
journal = {Evolution},
volume = {59},
number = {11},
pages = {2451--2459},
keywords = {mating system, sex ratio, sexual conflict, sexual selection, sexual selection, squamate reptiles, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
14.
Jean-François Le Galliard; Régis Ferrière; Jean Clobert
Effect of patch occupancy on immigration in the common lizard Journal Article
In: Journal of Animal Ecology, vol. 74, no. 2, pp. 241–249, 2005.
Links | BibTeX | Tags: colonisation, competition, conspecific attraction, dispersal, Zootoca vivipara
@article{le_galliard_effect_2005,
title = {Effect of patch occupancy on immigration in the common lizard},
author = {Jean-François Le Galliard and Régis Ferrière and Jean Clobert},
url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2656.2005.00912.x},
doi = {https://doi.org/10.1111/j.1365-2656.2005.00912.x},
year = {2005},
date = {2005-01-01},
journal = {Journal of Animal Ecology},
volume = {74},
number = {2},
pages = {241--249},
keywords = {colonisation, competition, conspecific attraction, dispersal, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
13.
Jean-François Le Galliard; Régis Ferrière; Jean Clobert
Juvenile growth and survival under dietary restriction: are males and females equal? Journal Article
In: Oikos, vol. 111, pp. 368–376, 2005.
Links | BibTeX | Tags: body growth, body size, phenotypic plasticity, sexual size dimorphism, squamate reptiles, survival, Zootoca vivipara
@article{le_galliard_juvenile_2005,
title = {Juvenile growth and survival under dietary restriction: are males and females equal?},
author = {Jean-François Le Galliard and Régis Ferrière and Jean Clobert},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/j.0030-1299.2005.14163.x},
doi = {https://doi.org/10.1111/j.0030-1299.2005.14163.x},
year = {2005},
date = {2005-01-01},
journal = {Oikos},
volume = {111},
pages = {368--376},
keywords = {body growth, body size, phenotypic plasticity, sexual size dimorphism, squamate reptiles, survival, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
12.
Jean-François Le Galliard; Régis Ferrière; Ulf Dieckmann
Adaptive evolution of social traits: origin, history, and correlation patterns of altruism and mobility Journal Article
In: The American Naturalist, vol. 165, no. 2, pp. 206–224, 2005.
Links | BibTeX | Tags: adaptive dynamics, altruism, dispersal, kin selection, spatial ecology
@article{le_galliard_adaptive_2005,
title = {Adaptive evolution of social traits: origin, history, and correlation patterns of altruism and mobility},
author = {Jean-François Le Galliard and Régis Ferrière and Ulf Dieckmann},
url = {https://www.journals.uchicago.edu/doi/abs/10.1086/427090?mobileUi=0&journalCode=an},
doi = {https://doi.org/10.1086/427090},
year = {2005},
date = {2005-01-01},
journal = {The American Naturalist},
volume = {165},
number = {2},
pages = {206--224},
keywords = {adaptive dynamics, altruism, dispersal, kin selection, spatial ecology},
pubstate = {published},
tppubtype = {article}
}
11.
Jean-François Le Galliard; Patrick Fitze; Régis Ferrière; Jean Clobert
Sex ratio bias, male aggression, and population collapse in lizards Journal Article
In: Proceedings of the National Academy of Sciences USA, vol. 102, no. 50, pp. 18231–18236, 2005.
Links | BibTeX | Tags: extinction, sex ratio, sexual conflict, sexual selection, squamate reptiles, Zootoca vivipara
@article{le_galliard_sex_2005,
title = {Sex ratio bias, male aggression, and population collapse in lizards},
author = {Jean-François Le Galliard and Patrick Fitze and Régis Ferrière and Jean Clobert},
url = {https://www.pnas.org/content/102/50/18231},
doi = {https://doi.org/10.1073/pnas.0505172102},
year = {2005},
date = {2005-01-01},
journal = {Proceedings of the National Academy of Sciences USA},
volume = {102},
number = {50},
pages = {18231--18236},
keywords = {extinction, sex ratio, sexual conflict, sexual selection, squamate reptiles, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
10.
Jean-François Le Galliard; Patrick S Fitze; Julien Cote; Manuel Massot; Jean Clobert
Female common lizards (Lacerta vivipara) do not adjust their sex-biased investment in relation to the adult sex ratio Journal Article
In: Journal of Evolutionary Biology, vol. 18, pp. 1455–1463, 2005.
Links | BibTeX | Tags: body condition, body size, sex ratio, sex ratio, sexual conflict, sexual selection
@article{le_galliard_female_2005,
title = {Female common lizards (Lacerta vivipara) do not adjust their sex-biased investment in relation to the adult sex ratio},
author = {Jean-François Le Galliard and Patrick S Fitze and Julien Cote and Manuel Massot and Jean Clobert},
url = {C:JeffPublicationsA7-SexRatio02-SexRatio-LizardFinalMsŁeGalliardJEB2005.pdf},
year = {2005},
date = {2005-01-01},
journal = {Journal of Evolutionary Biology},
volume = {18},
pages = {1455--1463},
keywords = {body condition, body size, sex ratio, sex ratio, sexual conflict, sexual selection},
pubstate = {published},
tppubtype = {article}
}
2004
9.
Jean-François Le Galliard; Régis Ferrière
Coopération et altruisme Book Chapter
In: Danchin, Etienne; Giraldeau, Luc-Alain; Cézilly, Frank (Ed.): Introduction à l'écologie comportementale : comportement, adaptation et évolution, Dunod Presse, Paris, 2004.
@inbook{le_galliard_cooperation_2004,
title = {Coopération et altruisme},
author = {Jean-François Le Galliard and Régis Ferrière},
editor = {Etienne Danchin and Luc-Alain Giraldeau and Frank Cézilly},
year = {2004},
date = {2004-01-01},
booktitle = {Introduction à l'écologie comportementale : comportement, adaptation et évolution},
publisher = {Dunod Presse},
address = {Paris},
keywords = {altruism},
pubstate = {published},
tppubtype = {inbook}
}
8.
Jean-François Le Galliard; Jean Clobert; Régis Ferrière
Physical performance and Darwinian fitness in lizards Journal Article
In: Nature, vol. 432, no. 7016, pp. 502–505, 2004.
Links | BibTeX | Tags: morphology, performance, Zootoca vivipara
@article{le_galliard_physical_2004,
title = {Physical performance and Darwinian fitness in lizards},
author = {Jean-François Le Galliard and Jean Clobert and Régis Ferrière},
url = {https://www.nature.com/articles/nature03057},
doi = {https://doi.org/10.1038/nature03057},
year = {2004},
date = {2004-01-01},
journal = {Nature},
volume = {432},
number = {7016},
pages = {502--505},
keywords = {morphology, performance, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
2003
7.
Jean-François Le Galliard
Interactions sociales et dispersion dans des populations structurées dans léspace PhD Thesis
Paris VI, Ecology, 2003.
Links | BibTeX | Tags: altruism, density, dispersal, kin competition, Zootoca vivipara
@phdthesis{le_galliard_interactions_2003,
title = {Interactions sociales et dispersion dans des populations structurées dans léspace},
author = {Jean-François Le Galliard},
url = {https://zenodo.org/record/3529133},
year = {2003},
date = {2003-01-01},
address = {Paris},
school = {Paris VI, Ecology},
keywords = {altruism, density, dispersal, kin competition, Zootoca vivipara},
pubstate = {published},
tppubtype = {phdthesis}
}
6.
Jean-François Le Galliard; Régis Ferrière; Ulf Dieckmann
The adaptive dynamics of altruism in spatially heterogeneous populations Journal Article
In: Evolution, vol. 57, no. 1, pp. 1–17, 2003.
Links | BibTeX | Tags: adaptive dynamics, altruism, kin selection, spatial ecology
@article{le_galliard_adaptive_2003,
title = {The adaptive dynamics of altruism in spatially heterogeneous populations},
author = {Jean-François Le Galliard and Régis Ferrière and Ulf Dieckmann},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/j.0014-3820.2003.tb00211.x},
doi = {https://doi.org/10.1111/j.0014-3820.2003.tb00211.x},
year = {2003},
date = {2003-01-01},
journal = {Evolution},
volume = {57},
number = {1},
pages = {1--17},
keywords = {adaptive dynamics, altruism, kin selection, spatial ecology},
pubstate = {published},
tppubtype = {article}
}
5.
Jean-François Le Galliard; Marion Le Bris; Jean Clobert
Timing of locomotor impairment and shift in thermal preferences during gravidity in a viviparous lizard Journal Article
In: Functional Ecology, vol. 17, pp. 877–885, 2003.
Links | BibTeX | Tags: reproduction, thermoregulation, Zootoca vivipara
@article{le_galliard_timing_2003,
title = {Timing of locomotor impairment and shift in thermal preferences during gravidity in a viviparous lizard},
author = {Jean-François Le Galliard and Marion Le Bris and Jean Clobert},
url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1046/j.0269-8463.2003.00800.x},
doi = {https://doi.org/10.1046/j.0269-8463.2003.00800.x},
year = {2003},
date = {2003-01-01},
journal = {Functional Ecology},
volume = {17},
pages = {877--885},
keywords = {reproduction, thermoregulation, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
4.
Jean-François Le Galliard; Régis Ferrière; Jean Clobert
Mother–offspring interactions affect natal dispersal in a lizard Journal Article
In: Proceedings of the Royal Society of London. Series B: Biological Sciences, vol. 270, no. 1520, pp. 1163–1169, 2003.
Links | BibTeX | Tags: density, dispersal, kin competition, Zootoca vivipara
@article{galliard_motheroffspring_2003,
title = {Mother–offspring interactions affect natal dispersal in a lizard},
author = {Jean-François Le Galliard and Régis Ferrière and Jean Clobert},
url = {https://royalsocietypublishing.org/doi/10.1098/rspb.2003.2360},
doi = {https://doi.org/10.1098/rspb.2003.2360},
year = {2003},
date = {2003-01-01},
journal = {Proceedings of the Royal Society of London. Series B: Biological Sciences},
volume = {270},
number = {1520},
pages = {1163--1169},
keywords = {density, dispersal, kin competition, Zootoca vivipara},
pubstate = {published},
tppubtype = {article}
}
2001
3.
Régis Ferrière; Jean-Francois Le Galliard
Invasion fitness and adaptive dynamics in spatial population models Book Chapter
In: Clobert, Jean; Danchin, Etinne; Dhondt, André A; Nichols, Jim (Ed.): Dispersal, pp. 57–79, Oxford University Press, Oxford, 2001.
Links | BibTeX | Tags: adaptive dynamics, altruism, dispersal, metapopulation, spatial ecology
@inbook{ferriere_invasion_2001,
title = {Invasion fitness and adaptive dynamics in spatial population models},
author = {Régis Ferrière and Jean-Francois Le Galliard},
editor = {Jean Clobert and Etinne Danchin and André A Dhondt and Jim Nichols},
url = {http://pure.iiasa.ac.at/id/eprint/6395/},
year = {2001},
date = {2001-01-01},
booktitle = {Dispersal},
pages = {57--79},
publisher = {Oxford University Press},
address = {Oxford},
keywords = {adaptive dynamics, altruism, dispersal, metapopulation, spatial ecology},
pubstate = {published},
tppubtype = {inbook}
}
1999
2.
Jean-François Le Galliard
Compétition locale, coopération et mobilité. Approches théoriques et expérimentales Masters Thesis
Paris, 1999.
BibTeX | Tags: competition, cooperation, dispersal, kin selection, Zootoca vivipara
@mastersthesis{le_galliard_competition_1999,
title = {Compétition locale, coopération et mobilité. Approches théoriques et expérimentales},
author = {Jean-François Le Galliard},
year = {1999},
date = {1999-01-01},
address = {Paris},
institution = {Université Pierre et Marie Curie},
keywords = {competition, cooperation, dispersal, kin selection, Zootoca vivipara},
pubstate = {published},
tppubtype = {mastersthesis}
}
0000
1.
David Rozen-Rechels; Alexis Rutschmann; Andréaz Dupoué; Pauline Blaimont; Victor Chauveau; Donald B Miles; Michael Guillon; Murielle Richard; Arnaud Badiane; Sandrine Meylan; Jean Clobert; Jean-François Le Galliard
Interaction of hydric and thermal conditions drive geographic variation in thermoregulation in a widespread lizard Journal Article
In: Ecological Monographs, vol. n/a, no. n/a, 0000.
Abstract | Links | BibTeX | Tags: body temperature, elevational gradient
@article{https://doi.org/10.1002/ecm.1440,
title = {Interaction of hydric and thermal conditions drive geographic variation in thermoregulation in a widespread lizard},
author = {David Rozen-Rechels and Alexis Rutschmann and Andréaz Dupoué and Pauline Blaimont and Victor Chauveau and Donald B Miles and Michael Guillon and Murielle Richard and Arnaud Badiane and Sandrine Meylan and Jean Clobert and Jean-François Le Galliard},
url = {https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1002/ecm.1440},
doi = {https://doi.org/10.1002/ecm.1440},
journal = {Ecological Monographs},
volume = {n/a},
number = {n/a},
abstract = {Abstract Behavioral thermoregulation is an efficient mechanism to buffer the physiological effects of climate change. Thermal ecology studies have traditionally tested how thermal constraints shape thermoregulatory behaviors without accounting for the potential major effects of landscape structure and water availability. Thus, we lack a general understanding of the multifactorial determinants of thermoregulatory behaviors in natural populations. In this study, we quantified the relative contribution of elevation, thermal gradient, moisture gradient and landscape structure in explaining geographic variation in thermoregulation strategies of a terrestrial ectotherm species. We measured field active body temperature, thermal preferences and operative environmental temperatures to calculate thermoregulation indices, including thermal quality of the habitat and thermoregulation efficiency for a very large sample of common lizards (Zootoca vivipara) from 21 populations over 3 years across the Massif Central mountain range in France. We used an information-theoretic approach to compare eight a priori thermo-hydroregulation hypotheses predicting how behavioral thermoregulation should respond to environmental conditions. Environmental characteristics exerted little influence on thermal preference with the exception that females from habitats with permanent access to water had lower thermal preferences. Field body temperatures and accuracy of thermoregulation were best predicted by the interaction between air temperature and a moisture index. In mesic environments, field body temperature and thermoregulation inaccuracy increased with air temperature, but they decreased in drier habitats. Thermoregulation efficiency (difference between thermoregulation inaccuracy and the thermal quality of the habitat) was maximized in cooler and more humid environments and was mostly influenced by the thermal quality of the habitat. Our study highlights complex patterns of variation in thermoregulation strategies, which are mostly explained by the interaction between temperature and water availability, independent of the elevation gradient or thermal heterogeneity. Although changes in landscape structure were expected to be the main driver of extinction rate of temperate zone ectotherms with ongoing global change, we conclude that changes in water availability coupled with rising temperatures might have a drastic impact on the population dynamics of some ectotherm species.},
keywords = {body temperature, elevational gradient},
pubstate = {published},
tppubtype = {article}
}
Abstract Behavioral thermoregulation is an efficient mechanism to buffer the physiological effects of climate change. Thermal ecology studies have traditionally tested how thermal constraints shape thermoregulatory behaviors without accounting for the potential major effects of landscape structure and water availability. Thus, we lack a general understanding of the multifactorial determinants of thermoregulatory behaviors in natural populations. In this study, we quantified the relative contribution of elevation, thermal gradient, moisture gradient and landscape structure in explaining geographic variation in thermoregulation strategies of a terrestrial ectotherm species. We measured field active body temperature, thermal preferences and operative environmental temperatures to calculate thermoregulation indices, including thermal quality of the habitat and thermoregulation efficiency for a very large sample of common lizards (Zootoca vivipara) from 21 populations over 3 years across the Massif Central mountain range in France. We used an information-theoretic approach to compare eight a priori thermo-hydroregulation hypotheses predicting how behavioral thermoregulation should respond to environmental conditions. Environmental characteristics exerted little influence on thermal preference with the exception that females from habitats with permanent access to water had lower thermal preferences. Field body temperatures and accuracy of thermoregulation were best predicted by the interaction between air temperature and a moisture index. In mesic environments, field body temperature and thermoregulation inaccuracy increased with air temperature, but they decreased in drier habitats. Thermoregulation efficiency (difference between thermoregulation inaccuracy and the thermal quality of the habitat) was maximized in cooler and more humid environments and was mostly influenced by the thermal quality of the habitat. Our study highlights complex patterns of variation in thermoregulation strategies, which are mostly explained by the interaction between temperature and water availability, independent of the elevation gradient or thermal heterogeneity. Although changes in landscape structure were expected to be the main driver of extinction rate of temperate zone ectotherms with ongoing global change, we conclude that changes in water availability coupled with rising temperatures might have a drastic impact on the population dynamics of some ectotherm species.