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
2011
Marianne Mugabo; Olivier Marquis; Samuel Perret; Jean-François Le Galliard
Direct and socially-mediated effects of food availability late in life on life-history variation in a short-lived lizard Journal Article
In: Oecologia, vol. 166, no. 4, pp. 949–960, 2011, ISSN: 0029-8549.
Abstract | Links | BibTeX | Tags: asymmetric competition, competition, density, density, food, life history, life history, reproduction, reproduction, Zootoca vivipara, Zootoca vivipara
@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}
}
2008
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}
}