Articles, books and book chapters

@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{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}

}