Articles, books and book chapters

@article{jaffre_population_2016,

title = {Population viability analysis of plant and animal populations with stochastic integral projection models},

author = {Malo Jaffré and Jean-François Le Galliard},

url = {http:dx.doi.org10.1007s00442-016-3704-4},

issn = {1432-1939},

year  = {2016},

date = {2016-01-01},

journal = {Oecologia},

volume = {182},

number = {4},

pages = {1031--1043},

abstract = {Integral projection models (IPM) make it possible to study populations structured by continuous traits. Recently, Vindenes et al. (Ecology 92:1146–1156, 2011) proposed an extended IPM to analyse the dynamics of small populations in stochastic environments, but this model has not yet been used to conduct population viability analyses. Here, we used the extended IPM to analyse the stochastic dynamics of IPM of small size-structured populations in one plant and one animal species (evening primrose and common lizard) including demographic stochasticity in both cases and environmental stochasticity in the lizard model. We also tested the accuracy of a diffusion approximation of the IPM for the two empirical systems. In both species, the elasticity for λ was higher with respect to parameters linked to body growth and size-dependent reproduction rather than survival. An analytical approach made it possible to quantify demographic and environmental variance to calculate the average stochastic growth rate. Demographic variance was further decomposed to gain insights into the most important size classes and demographic components. A diffusion approximation provided a remarkable fit to the stochastic dynamics and cumulative extinction risk, except for very small populations where stochastic growth rate was biased upward or downward depending on the model. These results confirm that the extended IPM provides a powerful tool to assess the conservation status and compare the stochastic demography of size-structured species, but should be complemented with individual based models to obtain unbiased estimates for very small populations of conservation concern.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{martin_uv_2016,

title = {UV color determines the issue of conflicts but does not covary with individual quality in a lizard},

author = {Mélissa Martin and Sandrine Meylan and Claudy Haussy and Beatriz Decencière and Samuel Perret and Jean-François Le Galliard},

url = {https://academic.oup.com/beheco/article/27/1/262/1744829},

doi = {https://doi.org/10.1093/beheco/arv149},

year  = {2016},

date = {2016-01-01},

journal = {Behavioral Ecology},

volume = {27},

number = {1},

pages = {262--270},

abstract = {Ultraviolet (UV) colors are visual signals potentially involved in territorial conflicts. However, the role of UV signals remains unclear relative to the prior resident effect and familiarity with the opponent, and the reliability of UV signals is still controversial. Male common lizards Zootoca vivipara exhibit substantial variation in the reflectance of their throat UV color patch. We tested whether UV reflectance was correlated with indicators of individual condition. We further manipulated throat UV reflectance of resident and intruder lizards and staged repeated encounters in the laboratory during the mating season. We found no evidence of condition dependence of the UV colors expression. During the first encounter among unfamiliar males, a reduction of UV reflectance of 1 of the 2 opponents influenced agonistic behaviors and the contest outcome, such that there was a significant advantage for residents over intruders. This advantage disappeared when both opponents were UV reduced. During the subsequent encounters among familiar males, fighting was more aggressive when opponents displayed similar UV signals, but UV signals did not influence the contest outcome. These results demonstrate that UV reflectance acted as a badge of status in male common lizards whose effects on the behavioral response were modulated, but not overridden, by the prior resident effect and by the familiarity effect. Male–male interactions are therefore mediated by UV signaling and competition for mates should play a major role in the evolutionary maintenance of this ornament. We discuss putative functions and reliability of UV signals.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{mell_personalities_2016,

title = {Do personalities co-vary with metabolic expenditure and glucocorticoid stress response in adult lizards?},

author = {Hugo Mell and Rémy Josserand and Beatriz Decencière and Paulina Artacho and Sandrine Meylan and Jean-François Le Galliard},

url = {https://link.springer.com/article/10.1007/s00265-016-2117-z},

doi = {https://doi.org/10.1007/s00265-016-2117-z},

year  = {2016},

date = {2016-01-01},

journal = {Behavioral Ecology and Sociobiology},

volume = {70},

pages = {951--961},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{rutschmann_climate_2016,

title = {Climate and habitat interact to shape the thermal reaction norms of breeding phenology across lizard populations},

author = {Alexis Rutschmann and Donald B Miles and Jean-François Le Galliard and Murielle Richard and Sylvain Moulherat and Barry Sinervo and Jean Clobert},

url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.12473},

doi = {https://doi.org/10.1111/1365-2656.12473},

issn = {1365-2656},

year  = {2016},

date = {2016-01-01},

journal = {Journal of Animal Ecology},

volume = {85},

number = {2},

pages = {457--466},

abstract = {* Substantial plastic variation in phenology in response to environmental heterogeneity through time in the same population has been uncovered in many species. However, our understanding of differences in reaction norms of phenology among populations from a given species remains limited. * As the plasticity of phenological traits is often influenced by local thermal conditions, we expect local temperature to generate variation in the reaction norms between populations. * Here, we explored temporal variation in parturition date across 11 populations of the common lizard (Zootoca vivipara) from four mountain chains as a function of air temperatures during mid-gestation. We characterized among-population variation to assess how local weather conditions (mean and variance of ambient temperatures during mid-gestation) and habitat openness (an index of anthropogenic disturbance) influence the thermal reaction norms of the parturition date. * Our results provide evidence of interactive effects of anthropogenic disturbance and thermal conditions, with earlier parturition dates in warmer years on average especially in closed habitats. * Variation in the reaction norms for parturition date was correlated with mean local thermal conditions at a broad geographical scale. However, populations exposed to variable thermal conditions had flatter thermal reaction norms. * Assessing whether environmental heterogeneity drives differentiation among reaction norms is crucial to estimate the capacity of different populations to contend with projected climatic and anthropogenic challenges.},

keywords = {phenology, phenology, phenotypic plasticity, phenotypic plasticity, thermal sensitivity, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{consortium_networking_2016,

title = {Networking our way to better ecosystem service provision},

author = {Quintessence Consortium},

url = {https://www.sciencedirect.com/science/article/pii/S0169534715003006},

doi = {https://doi.org/10.1016/j.tree.2015.12.003},

year  = {2016},

date = {2016-01-01},

journal = {Trends in Ecology & Evolution},

volume = {31},

number = {2},

pages = {105--115},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{artacho_quantification_2015,

title = {Quantification of correlational selection on thermal physiology, thermoregulatory behavior, and energy metabolism in lizards},

author = {Paulina Artacho and Julia Saravia and Beatriz Decencière Ferrandière and Samuel Perret and Jean-François Le Galliard},

url = {https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.1548},

doi = {https://doi.org/10.1002/ece3.1548},

issn = {2045-7758},

year  = {2015},

date = {2015-01-01},

journal = {Ecology and Evolution},

volume = {5},

number = {17},

pages = {3600--3609},

abstract = {Phenotypic selection is widely accepted as the primary cause of adaptive evolution in natural populations, but selection on complex functional properties linking physiology, behavior, and morphology has been rarely quantified. In ectotherms, correlational selection on thermal physiology, thermoregulatory behavior, and energy metabolism is of special interest because of their potential coadaptation. We quantified phenotypic selection on thermal sensitivity of locomotor performance (sprint speed), thermal preferences, and resting metabolic rate in captive populations of an ectothermic vertebrate, the common lizard, Zootoca vivipara. No correlational selection between thermal sensitivity of performance, thermoregulatory behavior, and energy metabolism was found. A combination of high body mass and resting metabolic rate was positively correlated with survival and negatively correlated with fecundity. Thus, different mechanisms underlie selection on metabolism in lizards with small body mass than in lizards with high body mass. In addition, lizards that selected the near average preferred body temperature grew faster that their congeners. This is one of the few studies that quantifies significant correlational selection on a proxy of energy expenditure and stabilizing selection on thermoregulatory behavior.},

keywords = {metabolism, natural selection, squamate reptiles, thermal coadaptation},

pubstate = {published},

tppubtype = {article}

}

@article{le_galliard_experimental_2015,

title = {An experimental test of density-dependent selection on temperament traits of activity, boldness and sociability},

author = {Jean-François Le Galliard and Mathieu Paquet and Marianne Mugabo},

url = {https://onlinelibrary.wiley.com/doi/full/10.1111/jeb.12641},

doi = {https://doi.org/10.1111/jeb.12641},

issn = {1420-9101},

year  = {2015},

date = {2015-01-01},

journal = {Journal of Evolutionary Biology},

volume = {28},

number = {5},

pages = {1144--1155},

abstract = {Temperament traits are seen in many animal species, and recent evolutionary models predict that they could be maintained by heterogeneous selection. We tested this prediction by examining density-dependent selection in juvenile common lizards Zootoca vivipara scored for activity, boldness and sociability at birth and at the age of 1 year. We measured three key life-history traits (juvenile survival, body growth rate and reproduction) and quantified selection in experimental populations at five density levels ranging from low to high values. We observed consistent individual differences for all behaviours on the short term, but only for activity and one boldness measure across the first year of life. At low density, growth selection favoured more sociable lizards, whereas viability selection favoured less active individuals. A significant negative correlational selection on activity and boldness existed for body growth rate irrespective of density. Thus, behavioural traits were characterized by limited ontogenic consistency, and natural selection was heterogeneous between density treatments and fitness traits. This confirms that density-dependent selection plays an important role in the maintenance of individual differences in exploration-activity and sociability.},

keywords = {competition, correlational selection, natural selection, personality, trade-off},

pubstate = {published},

tppubtype = {article}

}

@article{martin_uv_2015,

title = {UV coloration influences spatial dominance but not agonistic behaviors in male wall lizards},

author = {Mélissa Martin and Sandrine Meylan and Samuel Perret and Jean-François Le Galliard},

url = {https://link.springer.com/article/10.1007/s00265-015-1960-7},

doi = {https://doi.org/10.1007/s00265-015-1960-7},

issn = {1432-0762},

year  = {2015},

date = {2015-01-01},

journal = {Behavioral Ecology and Sociobiology},

volume = {69},

number = {9},

pages = {1483--1491},

abstract = {A bright ultraviolet (UV) component in the coloration of males may signal individual quality and thus determine the outcome of male-male contests. Yet, the role of the UV component of coloration in resolving conflicts is still controversial relative to factors such as residency status and seasonality. Here, we investigated whether a reduction of UV reflectance of lateral blue spots in male wall lizards (Podarcis muralis) interacts with residency status (resident vs. intruder) to influence agonistic behaviors, the outcome of contests, and basking time (a measure of spatial dominance). We performed this experiment during one breeding and one non-breeding season. The UV manipulation did not predict the outcome of contests. During the breeding season, the agonistic behaviors and basking time depended on the residency status of males but not on their UV treatment. During the non-breeding season, experimental factors affected basking time only. For a given male, the time spent basking depended in a complex manner on its residency status, its UV treatment, and those of its rival. UV reflectance of blue spots thus influences the processes of mutual assessment and spatial dominance, but is not a critical determinant of fighting success. Altogether, these results evidence context-dependent effects of the UV reflectance of blue spots on territorial behaviors according to residency status and, potentially, season. They also suggest that UV signaling may be more important than expected for male-male interactions during the non-breeding season.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{mougin_coordinated_2015,

title = {A coordinated set of ecosystem research platforms open to international research in ecotoxicology, AnaEE-France},

author = {Christian Mougin and Didier Azam and Thierry Caquet and Nathalie Cheviron and Samuel Dequiedt and Jean-François Le Galliard and Olivier Guillaume and Sabine Houot and Gérard Lacroix and François Lafolie and Pierre-Alain Maron and Radika Michniewicz and Christian Pichot and Lionel Ranjard and Jacques Roy and Bernd Zeller and Jean Clobert and André Chanzy},

url = {https://link.springer.com/article/10.1007/s11356-015-5233-9},

doi = {https://doi.org/10.1007/s11356-015-5233-9},

issn = {0944-1344},

year  = {2015},

date = {2015-01-01},

journal = {Environmental Science and Pollution Research},

pages = {1--14},

keywords = {ecotoxicology, Ecotrons, information system, mesocosms, modelling, stress},

pubstate = {published},

tppubtype = {article}

}

@article{mugabo_density-dependent_2015,

title = {Density-dependent immunity and parasitism risk in experimental populations of lizards naturally infested by Ixodid ticks},

author = {Marianne Mugabo and Samuel Perret and Beatriz Decencière and Sandrine Meylan and Jean-François Le Galliard},

url = {https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1890/14-0524.1},

doi = {https://doi.org/10.1890/14-0524.1},

issn = {0012-9658},

year  = {2015},

date = {2015-01-01},

journal = {Ecology},

volume = {96},

number = {2},

pages = {450--460},

abstract = {When effective immune defenses against parasites are costly and resources limited, individuals are expected to alter their investment in immunity in response to the risk of infection. As an ecological factor that can affect both food abundance and parasite exposure, host density can play an important role in host immunity and host-parasite interactions. High levels of intraspecific competition for food and social stress at high host density may diminish immune defenses and increase host susceptibility to parasites. At the same time, for contagious and environmentally transmitted parasites, parasite exposure often increases with host density whereas in mobile parasites which actively search for hosts, parasite exposure can decrease with host density due to the "encounter-dilution effect" (as defined by Mooring et Hart (1992) at the host intraspecific level). To unravel these multiple and potentially opposing effects of host density on immunity, we manipulated density of the common lizard Zootoca vivipara and measured local inflammation in response to PHA injection and levels of infestation by the tick Ixodes ricinus, a mobile ectoparasite for which we expected an encounter dilution effect to occur. Local inflammation strongly decreased with lizard density in adults but not in yearlings. Tick infestation (abundance and prevalence) was negatively correlated with lizard density in both age classes. Using path analyses, we found independent, direct negative density feedbacks on immunity and parasite exposure in adults, supporting the hypothesis of energetic constraints andtextbackslashor physiological stress acting on immunity at high density. In contrast, for yearlings, the best path model showed that density diluted exposure to parasites, which themselves down-regulated immune defenses in lizards. These results highlight the importance of investigating the pathways between host density, host immunity and parasite infestation, while accounting for relevant individual traits such as age.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{martin_importance_2015,

title = {The importance of ultraviolet and near-infrared sensitivity for visual discrimination in two species of lacertid lizards},

author = {Mélissa Martin and Jean-François Le Galliard and Sandrine Meylan and Ellis R Loew},

url = {https://jeb.biologists.org/content/218/3/458},

doi = {doi: 10.1242/jeb.115923},

year  = {2015},

date = {2015-01-01},

journal = {Journal of Experimental Biology},

volume = {218},

number = {3},

pages = {458--465},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{remy_concurrent_2014,

title = {Concurrent effects of age class and food distribution on immigration success and population dynamics in a small mammal},

author = {Alice Rémy and Jean-François Le Galliard and Morten Odden and Harry P Andreassen},

url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.12184},

doi = {https://doi.org/10.1111/1365-2656.12184},

issn = {1365-2656},

year  = {2014},

date = {2014-01-01},

journal = {Journal of Animal Ecology},

volume = {83},

number = {4},

pages = {813--822},

abstract = {* During the settlement stage of dispersal, the outcome of conflicts between residents and immigrants should depend on the social organization of resident populations as well as on individual traits of immigrants, such as their age class, body mass andtextbackslashor behaviour. * We have previously shown that spatial distribution of food influences the social organization of female bank voles (Myodes glareolus). Here, we aimed to determine the relative impact of food distribution and immigrant age class on the success and demographic consequences of female bank vole immigration. We manipulated the spatial distribution of food within populations having either clumped or dispersed food. After a pre-experimental period, we released either adult immigrants or juvenile immigrants, for which we scored sociability and aggressiveness prior to introduction. * We found that immigrant females survived less well and moved more between populations than resident females, which suggest settlement costs. However, settled juvenile immigrants had a higher probability to reproduce than field-born juveniles. * Food distribution had little effects on the settlement success of immigrant females. Survival and settlement probabilities of immigrants were influenced by adult female density in opposite ways for adult and juvenile immigrants, suggesting a strong adult–adult competition. Moreover, females of higher body mass at release had a lower probability to survive, and the breeding probability of settled immigrants increased with their aggressiveness and decreased with their sociability. * Prior to the introduction of immigrants, resident females were more aggregated in the clumped food treatment than in the dispersed food treatment, but immigration reversed this relationship. In addition, differences in growth trajectories were seen during the breeding season, with populations reaching higher densities when adult immigrants were introduced in a plot with dispersed food, or when juvenile immigrants were introduced in a plot with clumped food. * These results indicate the relative importance of intrinsic and extrinsic factors on immigration success and demographic consequences of dispersal and are of relevance to conservation actions, such as reinforcement of small populations.},

keywords = {behaviour, demography, dispersal, food, sexual selection},

pubstate = {published},

tppubtype = {article}

}

@article{stevens_comparative_2014,

title = {A comparative analysis of dispersal syndromes in terrestrial and semi-terrestrial animals},

author = {Virginie M Stevens and Sarah Whitmee and Jean-François Le Galliard and Jean Clobert and Katrin Böhning-Gaese and Dries Bonte and Martin Brändle and D Matthias Dehling and Christian Hof and Audrey Trochet and Michel Baguette},

url = {https://onlinelibrary.wiley.com/doi/full/10.1111/ele.12303},

doi = {https://doi.org/10.1111/ele.12303},

issn = {1461-0248},

year  = {2014},

date = {2014-01-01},

journal = {Ecology Letters},

volume = {17},

number = {8},

pages = {1039--1052},

abstract = {Dispersal, the behaviour ensuring gene flow, tends to covary with a number of morphological, ecological and behavioural traits. While species-specific dispersal behaviours are the product of each species’ unique evolutionary history, there may be distinct interspecific patterns of covariation between dispersal and other traits (‘dispersal syndromes’) due to their shared evolutionary history or shared environments. Using dispersal, phylogeny and trait data for 15 terrestrial and semi-terrestrial animal Orders (textgreater 700 species), we tested for the existence and consistency of dispersal syndromes across species. At this taxonomic scale, dispersal increased linearly with body size in omnivores, but decreased above a critical length in herbivores and carnivores. Species life history and ecology significantly influenced patterns of covariation, with higher phylogenetic signal of dispersal in aerial dispersers compared with ground dwellers and stronger evidence for dispersal syndromes in aerial dispersers and ectotherms, compared with ground dwellers and endotherms. Our results highlight the complex role of dispersal in the evolution of species life-history strategies: good dispersal ability was consistently associated with high fecundity and survival, and in aerial dispersers it was associated with early maturation. We discuss the consequences of these findings for species evolution and range shifts in response to future climate change.},

keywords = {climate change, dispersal, dispersal, life history, phylogeny, reproduction, survival, thermoregulation, trade-off, trophic levels},

pubstate = {published},

tppubtype = {article}

}

@article{verdier_climate_2014,

title = {A climate and atmosphere simulator for the experimental analysis of ecological systems in variable environments},

author = {Bruno Verdier and Isabelle Jouanneau and Benoit Simmonet and Christian Rabin and Tom Van Dooren and Nicolas Delpierre and Jean Clobert and Luc Abbadie and Régis Ferrière and Jean-François Le Galliard},

url = {https://pubs.acs.org/doi/abs/10.1021/es405467s},

doi = {https://doi.org/10.1021/es405467s},

year  = {2014},

date = {2014-01-01},

journal = {Environmental Science & Technology},

volume = {48},

number = {15},

pages = {8744--8753},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{artacho_interindividual_2013,

title = {Interindividual variation in thermal sensitivity of maximal sprint speed, thermal behavior, and resting metabolic rate in a lizard},

author = {Paulina Artacho and Isabelle Jouanneau and Jean-François Le Galliard},

url = {https://www.journals.uchicago.edu/doi/abs/10.1086/671376},

doi = {https://doi.org/10.1086/671376},

issn = {1522-2152},

year  = {2013},

date = {2013-01-01},

journal = {Physiological and Biochemical Zoology},

volume = {86},

number = {4},

pages = {458--469},

abstract = {Studies of the relationship of performance and behavioral traits with environmental factors have tended to neglect interindividual variation even though quantification of this variation is fundamental to understanding how phenotypic traits can evolve. In ectotherms, functional integration of locomotor performance, thermal behavior, and energy metabolism is of special interest because of the potential for coadaptation among these traits. For this reason, we analyzed interindividual variation, covariation, and repeatability of the thermal sensitivity of maximal sprint speed, preferred body temperature, thermal precision, and resting metabolic rate measured in ca. 200 common lizards (Zootoca vivipara) that varied by sex, age, and body size. We found significant interindividual variation in selected body temperatures and in the thermal performance curve of maximal sprint speed for both the intercept (expected trait value at the average temperature) and the slope (measure of thermal sensitivity). Interindividual differences in maximal sprint speed across temperatures, preferred body temperature, and thermal precision were significantly repeatable. A positive relationship existed between preferred body temperature and thermal precision, implying that individuals selecting higher temperatures were more precise. The resting metabolic rate was highly variable but was not related to thermal sensitivity of maximal sprint speed or thermal behavior. Thus, locomotor performance, thermal behavior, and energy metabolism were not directly functionally linked in the common lizard.},

keywords = {metabolism, thermal sensitivity, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{baron_intermittent_2013,

title = {Intermittent breeding and the dynamics of ressource allocation to growth, reproduction and survival},

author = {Jean-Pierre Baron and Jean-François Le Galliard and Thomas Tully and Régis Ferrière},

url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2435.12023},

doi = {https://doi.org/10.1111/1365-2435.12023},

year  = {2013},

date = {2013-01-01},

journal = {Functional Ecology},

volume = {27},

number = {1},

pages = {173--183},

keywords = {life history, reproduction, reproductive effort, viper, Vipera ursini},

pubstate = {published},

tppubtype = {article}

}

@article{bleu_reproductive_2013,

title = {Reproductive allocation strategies: a long-term study on proximate factors and temporal adjustments in a viviparous lizard},

author = {Joséfa Bleu and Jean-François Le Galliard and Patrick S Fitze and Sandrine Meylan and Jean Clobert and Manuel Massot},

url = {https://link.springer.com/article/10.1007/s00442-012-2401-1},

doi = {https://doi.org/10.1007/s00442-012-2401-1},

issn = {0029-8549},

year  = {2013},

date = {2013-01-01},

journal = {Oecologia},

volume = {171},

number = {1},

pages = {141--151},

abstract = {Optimisation of reproductive investment is crucial for Darwinian fitness, and detailed long-term studies are especially suited to unravel reproductive allocation strategies. Allocation strategies depend on the timing of resource acquisition, the timing of resource allocation, and trade-offs between different life-history traits. A distinction can be made between capital breeders that fuel reproduction with stored resources and income breeders that use recently acquired resources. In capital breeders, but not in income breeders, energy allocation may be decoupled from energy acquisition. Here, we tested the influence of extrinsic (weather conditions) and intrinsic (female characteristics) factors during energy storage, vitellogenesis and early gestation on reproductive investment, including litter mass, litter size, offspring mass and the litter size and offspring mass trade-off. We used data from a long-term study of the viviparous lizard, Lacerta (Zootoca) vivipara. In terms of extrinsic factors, rainfall during vitellogenesis was positively correlated with litter size and mass, but temperature did not affect reproductive investment. With respect to intrinsic factors, litter size and mass were positively correlated with current body size and postpartum body condition of the previous year, but negatively with parturition date of the previous year. Offspring mass was negatively correlated with litter size, and the strength of this trade-off decreased with the degree of individual variation in resource acquisition, which confirms theoretical predictions. The combined effects of past intrinsic factors and current weather conditions suggest that common lizards combine both recently acquired and stored resources to fuel reproduction. The effect of past energy store points out a trade-off between current and future reproduction.},

keywords = {cohort effects, energy stores, life history, phenotypic plasticity, reproduction, reproduction, size at birth, trade-off, trade-off, viviparity, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{le_galliard_personality_2013,

title = {Personality and the pace-of-life syndrome: variation and selection on activity, metabolism and locomotor performances},

author = {Jean-François Le Galliard and Mathieu Paquet and Matthieu Cisel and Laeticia Montes-Poloni},

url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2435.12017},

doi = {https://doi.org/10.1111/1365-2435.12017},

year  = {2013},

date = {2013-01-01},

journal = {Functional Ecology},

volume = {27},

number = {1},

pages = {136--144},

keywords = {activity, boldness, pace of life, personality, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{martin_ultraviolet_2013,

title = {Ultraviolet and carotenoid-based coloration in the viviparous lizard Zootoca vivipara (Squamata: Lacertidae) in relation to age, sex, and morphology},

author = {Mélissa Martin and Sandrine Meylan and Doris Gomez and Jean-François Le Galliard},

url = {https://academic.oup.com/biolinnean/article/110/1/128/2415649},

doi = {https://doi.org/10.1111/bij.12104},

issn = {0024-4066},

year  = {2013},

date = {2013-01-01},

journal = {Biological Journal of the Linnean Society},

volume = {110},

number = {1},

pages = {128--141},

abstract = {Lizards display structural and pigment-based colorations, and their visual system is sensitive to wavelengths of 300-700nm. However, few studies in squamate reptiles have quantified interindividual colour variation that includes the structural ultraviolet (UV) component (300-400nm). In the present study, we investigated variability of a ventral UVtextbackslashyellow-red ornamentation in the common lizard Zootoca vivipara, including an analysis of spatial distribution, as well as sex and age differences. We also investigated whether the expression of coloration is related to body size and condition. Our analyses revealed two distinct patches: a gular patch with a strong UV reflectance and a belly patch with a dominant yellow-red reflectance. Males displayed a less saturated throat coloration with higher UV chroma and UV hue, and had a redder but duller belly coloration than females. Yearlings had less elaborate ornaments than adults, although they already displayed a yellow-red sexual dichromatism on the belly. UV sexual dichromatism was only apparent in adults as a result of a weaker UV reflectance in females, suggesting potential fitness costs of a bright UV coloration in that sex. Different colour traits were related to body size in both sexes, as well as to body condition in males. We discuss the potential evolutionary scenarios leading to the maintenance of this ornament in common lizards.(c) 2013 The Linnean Society of London, Biological Journal of the Linnean Society, 2013, 110, 128-141.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{mugabo_density-dependent_2013,

title = {Density-dependent life history and the dynamics of small populations},

author = {Marianne Mugabo and Samuel Perret and Stéphane Legendre and Jean-François Le Galliard},

url = {https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2656.12109},

doi = {https://doi.org/10.1111/1365-2656.12109},

year  = {2013},

date = {2013-01-01},

journal = {Journal of Animal Ecology},

volume = {82},

number = {6},

pages = {1227--1239},

keywords = {Allee effects, density, life history, structured population models},

pubstate = {published},

tppubtype = {article}

}

@article{remy_food_2013,

title = {Food distribution influences social organization and population growth in a small rodent},

author = {Alice Rémy and Morten Odden and Murielle Richard and Marius Tyr Stene and Jean-François Le Galliard and Harry P Andreassen},

url = {https://academic.oup.com/beheco/article/24/4/832/220344},

doi = {https://doi.org/10.1093/beheco/art029},

issn = {1045-2249},

year  = {2013},

date = {2013-01-01},

journal = {Behavioral Ecology},

volume = {24},

number = {4},

pages = {832--841},

abstract = {In polygynous mammals, the spatial clumping and predictability of food should influence spacing behavior of females whose reproductive success depends to a great extent on food availability, which would in turn affect male spacing behavior. Changes in the social and mating systems can then influence individual fitness and population dynamics. To test these hypotheses, we manipulated food distribution and predictability in enclosed populations of bank voles (Myodes glareolus) and monitored spacing behavior, survival, and reproduction of adult females and males over 3 months. Food was either spread out (dispersed treatment), spatially clumped and highly predictable (clumped treatment) or spatially clumped but less predictable (variable treatment). We found that females in the clumped treatment were more aggregated and had more overlapping home ranges compared with females in the dispersed and variable treatments. Male spacing behavior followed the same patterns. Despite different social organizations between treatments, no differences in home range size and mating systems were found in females and males. In addition, we found that females in the clumped food treatment had a higher probability of successfully producing weaned offspring, likely due to lower infanticide rates. This led to higher population growth compared with the other 2 treatments. These results suggest a tight relationship between the spatiotemporal distribution of food, social organization, and population dynamics.},

keywords = {density, food, kinship, mammals, space use},

pubstate = {published},

tppubtype = {article}

}

@article{le_galliard_patterns_2012,

title = {Patterns and processes of dispersal behaviour in arvicoline rodents},

author = {Jean-François Le Galliard and Alice Rémy and Rolf A Ims and Xavier Lambin},

url = {https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-294X.2011.05410.x},

doi = {https://doi.org/10.1111/j.1365-294X.2011.05410.x},

year  = {2012},

date = {2012-01-01},

journal = {Molecular Ecology},

volume = {21},

number = {3},

pages = {505--523},

abstract = {A good understanding of mammalian societies requires measuring patterns and comprehending processes of dispersal in each sex. We investigated dispersal behaviour in arvicoline rodents, a subfamily of mammals widespread in northern temperate environments and characterized by a multivoltine life cycle. In arvicoline rodents, variation in life history strategies occurs along a continuum from precocial to delayed maturation that reflects seasonal and ecological fluctuations. We compared dispersal across and within species focusing on the effects of external (condition-dependent) and internal (phenotype-dependent) factors. Our data revealed substantial, unexplained variation between species for dispersal distances and a strong variation within species for both dispersal distance and fraction. Some methodological aspects explained variation across studies, which cautions against comparisons that do not control for them. Overall, the species under consideration display frequent short-distance dispersal events and extremely flexible dispersal strategies, but they also have hitherto unexpected capacity to disperse long distances. Female arvicolines are predominantly philopatric relative to males, but we found no clear association between the mating system and the degree of sex bias in dispersal across species. Dispersal is a response to both various proximate and ultimate factors, including competition, inbreeding avoidance, mate searching and habitat quality. In particular, our review suggests that costs and benefits experienced during transience and settlement are prime determinants of condition dependence. Patterns of phenotype-dependent dispersal are idiosyncratic, except for a widespread association between an explorationtextbackslashactivity syndrome and natal dispersal. Consequences for population dynamics and genetic structures are discussed.},

keywords = {dispersal, dispersal, mammals, mating system, sex-biased dispersal},

pubstate = {published},

tppubtype = {article}

}

@article{legrand_metatron_2012,

title = {The Metatron: an experimental system to study dispersal and metaecosystems for terrestrial organisms},

author = {Delphine Legrand and Olivier Guillaume and Michel Baguette and Julien Cote and Audrey Trochet and Olivier Calvez and Susanne Zajitschek and Felix Zajitschek and Jane Lecomte and Quentin Benard and Jean-François Le Galliard and Jean Clobert},

url = {https://www.nature.com/articles/nmeth.2104},

doi = {https://doi.org/10.1038/nmeth.2104},

issn = {1548-7091},

year  = {2012},

date = {2012-01-01},

journal = {Nature Methods},

volume = {9},

number = {8},

pages = {828--834},

abstract = {Dispersal of organisms generates gene flow between populations. Identifying factors that influence dispersal will help predict how species will cope with rapid environmental change. We developed an innovative infrastructure, the Metatron, composed of 48 interconnected patches, designed for the study of terrestrial organism movement as a model for dispersal. Corridors between patches can be flexibly open or closed. Temperature, humidity and illuminance can be independently controlled within each patch. The modularity and adaptability of the Metatron provide the opportunity for robust experimental design for the study of 'meta-systems'. We describe a pilot experiment on populations of the butterfly Pieris brassicae and the lizard Zootoca vivipara in the Metatron. Both species survived and showed both disperser and resident phenotypes. The Metatron offers the opportunity to test theoretical models in spatial ecology.},

keywords = {behaviour, metapopulation, metapopulation, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{bleu_mating_2011,

title = {Mating does not influence reproductive investment in a viviparous lizard},

author = {Joséfa Bleu and Jean-François Le Galliard and Sandrine Meylan and Manuel Massot and Patrick S Fitze},

url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/jez.693},

doi = {https://doi.org/10.1002/jez.693},

issn = {1932-5223},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Experimental Zoology Part a-Ecological Genetics and Physiology},

volume = {315A},

number = {8},

pages = {458--464},

abstract = {Mating is crucial for females that reproduce exclusively sexually and should influence their investment into reproduction. Although reproductive adjustments in response to mate quality have been tested in a wide range of species, the effect of exposure to males and mating per se has seldom been studied. Compensatory mechanisms against the absence of mating may evolve more frequently in viviparous females, which pay higher direct costs of reproduction, due to gestation, than oviparous females. To test the existence of such mechanisms in a viviparous species, we experimentally manipulated the mating opportunity of viviparous female lizard, Lacerta (Zootoca) vivipara. We assessed the effect of mating on ovulation, postpartum body condition and parturition date, as well as on changes in locomotor performances and body temperatures during the breeding cycle. Female lizards ovulated spontaneously and mating had no influence on litter size, locomotor impairment or on selected body temperature. However, offspring production induced a more pronounced locomotor impairment and physical burden than the production of undeveloped eggs. Postpartum body condition and parturition dates were not different among females. This result suggests that gestation length is not determined by an embryonic signal. In the common lizard, viviparity is not associated with facultative ovulation and a control of litter size after ovulation, in response to the absence of mating. J. Exp. Zool. 315:458-464, 2011. (C) 2011 Wiley-Liss, Inc.},

keywords = {life history, performance, squamate reptiles, thermal preferences, trade-off, Zootoca vivipara, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{fitze_inconsistency_2011,

title = {Inconsistency between different measures of sexual selection},

author = {Patrick S Fitze and Jean-François Le Galliard},

url = {https://www.journals.uchicago.edu/doi/abs/10.1086/660826},

doi = {https://doi.org/10.1086/660826},

issn = {0003-0147},

year  = {2011},

date = {2011-01-01},

journal = {The American Naturalist},

volume = {178},

number = {2},

pages = {256--268},

abstract = {Measuring the intensity of sexual selection is of fundamental importance to the study of sexual dimorphism, population dynamics, and speciation. Several indices, pools of individuals, and fitness proxies are used in the literature, yet their relative performances are strongly debated. Using 12 independent common lizard populations, we manipulated the adult sex ratio, a potentially important determinant of the intensity of sexual selection at a particular time and place. We investigated differences in the intensity of sexual selection, as estimated using three standard indices of sexual selection-the standardized selection gradient (beta'), the opportunity of selection (I), and the Bateman gradient (beta(ss))-calculated for different pools of individuals and different fitness proxies. We show that results based on estimates of I were the opposite of those derived from the other indices, whereas results based on estimates of beta' were consistent with predictions derived from knowledge about the species' mating system. In addition, our estimates of the strength and direction of sexual selection depended on both the fitness proxy used and the pool of individuals included in the analysis. These observations demonstrate inconsistencies in distinct measures of sexual selection and underscore the need for caution when comparing studies and species.},

keywords = {competition, microsatellite markers, natural selection, sex ratio, sexual selection, Zootoca vivipara, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{gonzalez-suarez_population_2011,

title = {Population and life-history consequences of within-cohort individual variation},

author = {Manuela González-Suárez and Jean-François Le Galliard and David Claessen},

url = {https://www.journals.uchicago.edu/doi/abs/10.1086/661906},

doi = {https://doi.org/10.1086/661906},

issn = {0003-0147},

year  = {2011},

date = {2011-01-01},

journal = {The American Naturalist},

volume = {178},

number = {4},

pages = {525--537},

abstract = {The consequences of within-cohort (i.e., among-individual) variation for population dynamics are poorly understood, in particular for the case where life history is density dependent. We develop a physiologically structured population model that incorporates individual variation among and within cohorts and allows us to explore the intertwined relationship between individual life history and population dynamics. Our model is parameterized for the lizard Zootoca vivipara and reproduces well the species' dynamics and life history. We explore two common mechanisms that generate within-cohort variation: variability in food intake and variability in birth date. Predicted population dynamics are inherently very stable and do not qualitatively change when either of these sources of individual variation is introduced. However, increased within-cohort variation in food intake leads to changes in morphology, with longer but skinnier individuals, even though mean food intake does not change. Morphological changes result from a seemingly universal nonlinear relationship between growth and resource availability but may become apparent only in environments with strongly fluctuating resources. Overall, our results highlight the importance of using a mechanistic framework to gain insights into how different sources of intraspecific variability translate into life-history and population-dynamic changes.},

keywords = {body size, demography, demography, density, metabolism, performance, phenotypic plasticity, phenotypic plasticity, size-structured populations, stochasticity, structured population models, Zootoca vivipara, Zootoca vivipara, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{gonzalez-suarez_disentangling_2011,

title = {Disentangling the effects of predator body size and prey density on prey consumption in a lizard},

author = {Manuela González-Suárez and Marianne Mugabo and Beatriz Decencière and Samuel Perret and David Claessen and Jean-François Le Galliard},

url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2435.2010.01776.x},

doi = {https://doi.org/10.1111/j.1365-2435.2010.01776.x},

year  = {2011},

date = {2011-01-01},

journal = {Functional Ecology},

volume = {25},

number = {1},

pages = {158--165},

abstract = {1. Understanding proximate determinants of predation rates is a central question in ecology. 

Studies often use functional response (density dependent) or allometric (mass dependent) models 

but approaches that consider multiple factors are critical to capture the complexity in predator– 

prey interactions. We present a novel comprehensive approach to understand predation rates 

based on field data obtained from a vertebrate predator. 

2. Estimates of food consumption and prey abundance were obtained from 21 semi-natural populations 

of the lizard Zootoca vivipara. We identified the most parsimonious feeding rate function 

exploring allometric, simple functional response and allometric functional response models. 

Each group included effects of sex and weather conditions. 

3. Allometric models reveal the importance of predator mass and sex: larger females have the 

highest natural feeding rates. Functional response models show that the effect of prey density is 

best represented by a Holling type II response model with a mass, sex and weather dependent 

attack rate and a constant handling time. However, the best functional response model only 

received moderate support compared to simpler allometric models based only on predator mass 

and sex. 

4. Despite this limited effect of prey densities on feeding rates, we detected a significant negative 

relationship between an index of preferred prey biomass and lizard density. 

5. Functional response models that ignore individual variation are likely to misrepresent trophic 

interactions. However, simpler models based on individual traits may be best supported by some 

data than complex allometric functional responses. These results illustrate the importance of considering 

individual, population and environmental effects while also exploring simple models.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{hoset_natal_2011,

title = {Natal dispersal correlates with behavioural traits that are not consistent across early life stages},

author = {Katrine Hoset and Anne-Laure Ferchaud and Florence Dufour and Danielle Mersch and Julien Cote and Jean-François Le Galliard},

url = {https://academic.oup.com/beheco/article/22/1/176/232325},

doi = {https://doi.org/10.1093/beheco/arq188},

year  = {2011},

date = {2011-01-01},

journal = {Behavioral Ecology},

volume = {22},

pages = {176--183},

abstract = {Behavioral differences between dispersers and residents have long been recognized in animal species, but it remains unclear 

whether these dispersal syndromes represent consistent differences over time and in different contexts (i.e., personalities) or 

short-term changes in behavior during dispersal. We analyzed interindividual differences in sociability (attraction to unfamiliar 

adult males or females), exploration, and locomotor activity in disperser and resident root voles, Microtus oeconomus. We recorded 

these behavioral traits in 50 animals before weaning, around weaning age but before dispersal, and after a dispersal test in the 

field. Dispersing root voles displayed marked social behavior at the youngest age, being more attracted to unfamiliar adult males 

than residents. Dispersers were also, on average, faster explorers and were more active than residents. However, the observed 

variation between individuals in terms of social, exploration, and activity behaviors was not consistent over early life stages. These 

data indicate that behavioral differences between dispersers and residents may be only temporary in some species. Key words: 

dispersal syndrome, exploration, mammal, natal dispersal, personality trait, sociability.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{mugabo_direct_2011,

title = {Direct and socially-mediated effects of food availability late in life on life-history variation in a short-lived lizard},

author = {Marianne Mugabo and Olivier Marquis and Samuel Perret and Jean-François Le Galliard},

url = {https://link.springer.com/article/10.1007/s00442-011-1933-0},

doi = {https://doi.org/10.1007/s00442-011-1933-0},

issn = {0029-8549},

year  = {2011},

date = {2011-01-01},

journal = {Oecologia},

volume = {166},

number = {4},

pages = {949--960},

abstract = {Food availability is a major environmental factor that can influence life history within and across generations through direct effects on individual quality and indirect effects on the intensity of intra- and intercohort competition. Here, we investigated in yearling and adult common lizards (Zootoca vivipara) the immediate and delayed life-history effects of a prolonged food deprivation in the laboratory. We generated groups of fully fed or food-deprived yearlings and adults at the end of one breeding season. These lizards were released in 16 outdoor enclosures together with yearlings and adults from the same food treatment and with food-deprived or fully fed juveniles, creating four types of experimental populations. Experimental populations were then monitored during 2 years, which revealed complex effects of food on life-history trajectories. Food availability had immediate direct effects on morphology and delayed direct effects on immunocompetence and female body condition at winter emergence. Also, male annual survival rate and female growth rate and body size were affected by an interaction between direct effects of food availability and indirect effects on asymmetric competition with juveniles. Reproductive outputs were insensitive to past food availability, suggesting that female common lizards do not solely rely on stored energy to fuel reproduction. Finally, food conditions had socially-mediated intergenerational effects on early growth and survival of offspring through their effects on the intensity of competition. This study highlights the importance of social interactions among cohorts for life-history trajectories and population dynamics in stage-structured populations.},

keywords = {asymmetric competition, competition, density, density, food, life history, life history, reproduction, reproduction, Zootoca vivipara, Zootoca vivipara},

pubstate = {published},

tppubtype = {article}

}

@article{remy_effects_2011,

title = {Effects of individual condition and habitat quality on natal dispersal behaviour in a small rodent},

author = {Alice Rémy and Jean-François Le Galliard and Gry Gundersen and Harald Steen and Harry P Andreassen},

url = {https://besjournals.onlinelibrary.wiley.com/doi/10.1111/j.1365-2656.2011.01849.x},

doi = {https://doi.org/10.1111/j.1365-2656.2011.01849.x},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Animal Ecology},

volume = {80},

number = {5},

pages = {929--937},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{paquet_effects_2011,

title = {Effects of miniature transponders on physiological stress, locomotor activity, growth and survival in small lizards},

author = {Matthieu Paquet and Jean-François Le Galliard and Samuel Perret and Zorica Pantelic},

url = {https://brill.com/view/journals/amre/32/2/article-p177_4.xml},

doi = {https://doi.org/10.1163/017353710X552371},

year  = {2011},

date = {2011-01-01},

journal = {Amphibia-Reptilia},

volume = {32},

number = {2},

pages = {177--183},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{baron_cohort_2010,

title = {Cohort variation in offspring growth and survival: prenatal and postnatal factors in a late-maturing viviparous snake},

author = {Jean-Pierre Baron and Jean-François Le Galliard and Thomas Tully and Régis Ferrière},

url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2656.2010.01661.x},

doi = {https://doi.org/10.1111/j.1365-2656.2010.01661.x},

year  = {2010},

date = {2010-01-01},

journal = {Journal of Animal Ecology},

volume = {79},

pages = {640--649},

abstract = {1. Recruitment to adulthood plays an important role in the population dynamics of late-maturing 

organisms as it is usually variable. Compared to birds and mammals, few studies assessing the contributions 

to this variation of environmental factors, offspring traits and maternal traits have been 

carried out for late-maturing snakes. 

2. Cohort variation in recruitment through offspring growth and survival in the meadow viper 

(Vipera ursinii ursinii) was evaluated from 13 years of mark–recapture data collected at Mont Ventoux, 

France. In this species, females are mature at the age of 4–6 years and adult survival and 

fecundity rates are high and constant over time. 

3. Offspring were difficult to catch during the first 3 years of their lives, but their mean annual 

probability of survival was reasonably high (0Æ48 ± 0Æ11 SE). Mass and body condition at birth 

(mass residuals) varied significantly between years, decreased with litter size, and increased with 

maternal length. 

4. Cohorts of offspring in better condition at birth grew faster, but offspring growth was not 

affected by sex, habitat or maternal traits. 

5. Survival varied considerably between birth cohorts, some cohorts having a high-survival rate 

and others having essentially no survivors. No difference in mass or body condition at birth was 

found between cohorts with ‘no survival’ and ‘good survival’. However, offspring survival in 

cohorts with good survival was positively correlated with mass at birth and negatively correlated 

with body condition at birth. 

6. Thus, variation in offspring performance was influenced by direct environmental effects on survival 

and indirect environmental effects on growth, mediated by body condition at birth. Effects of 

maternal traits were entirely channelled through offspring traits.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{baron_sex-specific_2010,

title = {Sex-specific fitness returns are too weak to select for non random patterns of sex allocation in a viviparous snake},

author = {Jean-Pierre Baron and Thomas Tully and Jean-François Le Galliard},

url = {https://link.springer.com/article/10.1007/s00442-010-1660-y},

doi = {https://doi.org/10.1007/s00442-010-1660-y},

year  = {2010},

date = {2010-01-01},

journal = {Oecologia},

volume = {164},

pages = {369--378},

abstract = {When environmental conditions exert sex-specific selection on offspring, mothers should benefit from biasing 

their sex allocation towards the sex with the highest fitness in a given environment. Yet, studies show mixed 

support for such adaptive strategies in vertebrates, which may be due to mechanistic constraints andtextbackslashor weak 

selection on facultative sex allocation. In an attempt to disentangle these alternatives, we quantified sexspecific 

fitness returns and sex allocation (sex ratio and sex-specific mass at birth) according to maternal 

factors (body size, age, birth date, and litter size), habitat, and year in a viviparous snake with genotypic sex 

determination. We used data on 106 litters from 19 years of field survey in two nearby habitats occupied by 

the meadow viper Vipera ursinii ursinii in south-eastern France. Maternal reproductive investment and habitat 

quality had no differential effects on the growth and survival of sons and daughters. Sex ratio at birth was 

balanced despite a slight female-biased mortality before birth. No sexual mass dimorphism between offspring 

was evident. Sex allocation was almost random apart for a trend towards more male-biased litters as females 

grew older, which could be explained by an inbreeding avoidance strategy. Thus, a weak selection for 

facultative sex allocation seems sufficient to explain the almost equal sex allocation in the meadow viper.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{caron_proposition_2010,

title = {Proposition d’un protocole standardisé pour l’inventaire des populations de reptiles sur la base d’une analyse de deux techniques d’inventaire},

author = {Julien Caron and Olivier Renault and Jean-François Le Galliard},

year  = {2010},

date = {2010-01-01},

journal = {Bulletin de la Société Herpétologique de France},

volume = {134},

pages = {3--25},

keywords = {},

pubstate = {published},

tppubtype = {article}

}