Aurélie Cohas

Alpine marmot ( Marmota marmota ) pups emerge increasingly earlier with ongoing climate change

Christophe Bonenfant, Aurélie Cohas, Pierre-Alexandre Quittet, Jérôme Cavailhès et autres

Abstract Advance in the phenology of plants and animals is a widely observed response to climate change. The magnitude of the changes is, however, very variable across species. Several biological factors could influence the strength of the phenological advances, including lifestyle. Hibernation …

fr (code pays fourni par la source)

Alpine marmot ( Marmota marmota ) pups emerge increasingly earlier with the ongoing climate change

Christophe Bonenfant, Aurélie Cohas, Jérôme Cavailhes, Rébecca Garcia et autres

Abstract Advance in the phenology of plants and animals is a widely observed response to climate change. The magnitude of the observed changes is, however, very variable across species. Several biological factors could influence the strength of the phenological advances, including lifestyle. …

ca, fr (code pays fourni par la source)

Technical validation and a comparison of two methods to quantify individual levels of glucocorticoids in Alpine marmot hair

Elina Marielle Doss, Mathilde Jouffroy, Benjamin Rey, Aurélie Cohas et autres

Quantification of cortisol concentration in hair has become a promising conservation tool for non-invasive monitoring of "stress" in wild populations, yet this method needs to be carefully validated for each species. The goals of the study were:•Immunologically validate two methods (study 1 …

gb, fr (code pays fourni par la source)

Technical Validation and a Comparison of Two Methods to Quantify Individual Levels of Glucocorticoids in Alpine Marmot Hair

Elina Marielle Doss, Mathilde Jouffroy, Benjamin Rey, Aurélie Cohas et autres

gb, fr (code pays fourni par la source)

Early and Adult Social Environments Shape Sex-Specific Actuarial Senescence Patterns in a Cooperative Breeder

Vérane Berger, Jean‐François Lemaître, Dominique Allainé, Jean‐Michel Gaillard et autres

Sociality modulates life-history traits through changes in resource allocation to fitness-related traits. However, how social factors at different stages of the life cycle modulate senescence remains poorly understood. To address this question, we assessed the influence of social environment in both early …

fr, us (code pays fourni par la source)

Variations in immune parameters with age in a wild rodent population and links with survival

Coraline Bichet, Corinne Régis, Emmanuelle Gilot‐Fromont, Aurélie Cohas

Recent findings suggest that immune functions do not unidirectionally deteriorate with age but that a potentially adaptive remodeling, where functions of the immune system get downregulated while others get upregulated with age could also occur. Scarce in wild populations, longitudinal studies are …

fr, de (code pays fourni par la source)

Variations in immune parameters with age in a wild rodent population and links with survival

Coraline Bichet, Corinne Régis, Emmanuelle Gilet-Fromont, Aurélie Cohas

Recent findings suggest that immune functions do not unidirectionally deteriorate with age but that a potentially adaptive remodelling where functions of the immune system get down regulated while others get upregulated with age could also occur. Scarce in wild populations, longitudinal studies …

fr, de (code pays fourni par la source)

Litter characteristics and helping context during early life shape the responsiveness of the stress axis in a wild cooperative breeder

Aurélie Cohas, Coraline Bichet, Rébecca Garcia, Sylvia Pardonnet et autres

fr, Afrique du Sud (code pays fourni par la source)

Litter characteristics and helping context during early life shape the responsiveness of the stress axis in a wild cooperative breeder

Aurélie Cohas, Coraline Bichet, Rébecca Garcia, Sylvia Pardonnet et autres

Abstract Stress responses have evolved to quickly and appropriately deal with environmental stressors in order to secure or restore homeostasis. Since the regulation of stress hormones plays a key adaptive role, the regulatory processes controlling stress hormones levels may be under high …

fr, Afrique du Sud (code pays fourni par la source)

Changes in immune phenotype with age impaired survival: a longitudinal approach in Alpine marmots

Coraline Bichet, Corinne Régis, Emmanuelle Gilet-Fromont, Aurélie Cohas

Recent findings suggest that immunosenescence should not be considered as a unidirectional deterioration, and that the remodeling of the immune system with age could also be adaptive. Longitudinal studies on immunosenescence in wild populations are scarce, and therefore, processes like selective disappearance …

fr, de (code pays fourni par la source)

Influences of climatic and social environment on variable maternal allocation among offspring in Alpine marmots

Floriane Plard, Benoit Chamiot‐clerc, Aurélie Cohas

In an environment with limited resources, parents may trade-off the number of offspring produced against offspring mass. To maximize fitness under unpredictable environments, females must not only maximize mean annual reproductive success but also minimize between-year variation in reproductive success. Thus, preferred …

fr, is (code pays fourni par la source)

Geographic variation in marmots’ alarm calls causes different responses

Thierry Lengagne, Mariona Ferrandiz‐Rovira, Clara Superbie, Irene Figueroa et autres

fr, es, hu, ca, de (code pays fourni par la source)