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
2008
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}
}
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.
2005
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}
}