A5086920389- Animal Behavior and Reproduction
- Avian ecology and behavior
- Bird parasitology and diseases
- Wildlife Ecology and Conservation
- Physiological and biochemical adaptations
- Telomeres, Telomerase, and Senescence
- Marine animal studies overview
- Amphibian and Reptile Biology
- Bat Biology and Ecology Studies
- Plant and animal studies
- Mercury impact and mitigation studies
- Genetics, Aging, and Longevity in Model Organisms
- Animal Vocal Communication and Behavior
- Fish Ecology and Management Studies
- Per- and polyfluoroalkyl substances research
- Toxic Organic Pollutants Impact
- Polar Research and Ecology
- Neuroendocrine regulation and behavior
- Insect and Pesticide Research
- Animal Nutrition and Physiology
- Climate Change and Health Impacts
- Air Quality and Health Impacts
- Reproductive Physiology in Livestock
- Animal Behavior and Welfare Studies
- Animal Ecology and Behavior Studies
Centre d'Etudes Biologiques de Chizé
2016-2025
Centre National de la Recherche Scientifique
2015-2025
La Rochelle Université
2014-2025
University of California, Davis
2009-2020
Smithsonian Conservation Biology Institute
2009-2013
National Zoological Park
2009-2013
Iowa State University
2013
University of California System
2010
Mercury, a ubiquitous toxic element, is known to alter expression of sex steroids and impair reproduction across vertebrates but the mechanisms underlying these effects are not clearly identified. We examined whether contamination by mercury predicts probability skip in black-legged kittiwakes (Rissa tridactyla) from Svalbard. also manipulated endocrine system investigate mechanism this relationship. During pre-laying period, we injected exogenous GnRH (gonadotropin-releasing hormone) test...
Summary An emergency life‐history stage is expressed in breeding vertebrates when the immediate survival threatened by poor energetic conditions (i.e. allostatic overload). This shifts energy investment away from reproduction and redirects it toward survival. In birds, this promoted a release of stress hormone corticosterone. However, how corticosterone reduces expression parental cares remains to be clarified. One hypothesis that may also affect prolactin levels, pituitary widely involved...
Consistent expanding urbanization dramatically transforms natural habitats and exposes organisms to novel environmental challenges, often leading reduced species richness diversity in cities. However, it remains unclear how individuals are affected by the urban environment they can or cannot adjust specific characteristics of life (e.g. food availability). In this study, we used an integrative multi-component approach investigate effects on nutritional status house sparrows (Passer...
Measuring individual quality in vertebrates is difficult. Focusing on allostasis mechanisms may be useful because they are functionally involved the ability of an to survive and reproduce its environment. Thus, a rise stress hormones levels (corticosterone) occurs when organism has cope with challenging environmental conditions. This recently led proposal ‘cort–fitness hypothesis’, which suggests that elevated baseline corticosterone should found individuals poor have difficulty coping their...
In a consistently urbanizing world, anthropogenic noise has become almost omnipresent, and there are increasing evidence that high levels can have major impacts on wildlife. While the effects of exposure adult animals been widely studied, surprisingly, little consideration pollution developing organisms. Yet, environmental conditions experienced in early life dramatic lifelong consequences for fitness. Here, we experimentally manipulated acoustic environment free-living house sparrows (...
Over the last century, expanding urbanization has led to a strong increase in levels of background noise. This noise pollution been shown negatively affect wildlife (e.g., reduced species diversity and density, breeding success), especially birds. Most research addressing effects anthropogenic focused on avian communication and, date, very little is known regarding impact chronic exposure nonvocal behavior such as antipredator behavior. Here, we exposed free-living house sparrows ( Passer...
Abstract In wild vertebrates, some individuals survive and reproduce better than others this has led to the concept of individual quality. Despite its importance when studying ecological processes life‐history trade‐offs, measuring quality is complex because must be followed during a large part their life. Recently, telomere biology been successfully brought into ecology length suggested promising molecular tool evaluate in vertebrates (“the telomere–individual hypothesis”). study, we tested...
Because endocrine mechanisms are thought to mediate behavioral responses changes in the environment, examining these is essential for understanding how long-lived seabirds adjust their foraging decisions contrasting environmental conditions order maximize fitness. In this context, hormone corticosterone (CORT) deserves specific attention because of its major connections with locomotor activities. We examined first time relationships between individual CORT levels and measurements success...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 393:235-246 (2009) - DOI: https://doi.org/10.3354/meps08222 Climate change and phenological responses of two seabird species breeding in high-Arctic Børge Moe1,2,*, Lech Stempniewicz3, Dariusz Jakubas3, Frédéric Angelier4,5, Olivier Chastel4, Frode Dinessen6, Geir W. Gabrielsen7, Frank Hanssen8, Nina J....
Summary In many vertebrates, reproductive performance increases with advancing age but mechanisms involved in such a pattern remain poorly studied. One potential mechanism may be the hormonal stress response, which shifts energy investment away from reproduction and redirects it towards survival. birds, this response is achieved through release of corticosterone also accompanied by decrease circulating prolactin, hormone widely regulating parental cares. It has been predicted that, when...
Abstract Severe environmental conditions affect organisms in two major ways. The environment may be predictably severe such as deserts, polar and alpine regions, or individuals exposed to temporarily extreme through weather, presence of predators, lack food, social status etc. Existence an possible, but then breed molt addition can present bottlenecks that have resulted the evolution hormone-behavior adaptations cope with unpredictable events. Examples include attenuated testosterone...
Summary Telomeres are long repetitive noncoding sequences of DNA located at the ends chromosomes. Recently, study telomere dynamics has been increasingly used to investigate ecological questions. However, little is currently known about relationships that link environmental conditions, and fitness in wild vertebrates. Using a small migratory bird ( A merican redstart, S etophaga ruticilla ), we investigated how can be affected by non‐breeding habitat quality what extent length predict return...
In vertebrates, the adrenocortical stress response activates an emergency life-history stage, which is thought to promote survival by helping individuals escape life-threatening situations. Although promotes many behavioural and physiological changes, it remains unclear whether this actually translates into higher in wild vertebrates. We measured of non-breeding American redstarts ( Setophaga ruticilla ), a migratory bird that wintered habitats either high (mangroves) or low suitability...
Urban sprawl is associated with deep and intense modifications of the natural habitats wild vertebrates. Although many species are unable to cope such an environment, a few can be found in cities help us assessing impact urbanization on wildlife. Urban-related environmental multiple some them seem beneficial while others rather detrimental Moreover, these vertebrates likely vary depending phase annual life-cycle. Therefore, it challenging get comprehensive picture Overall, usually reduced...
Identifying the early warning signals of catastrophic extinctions has recently become a central focus for ecologists, but species' functional responses to environmental changes remain an untapped source sharpening such signals. Telomere length (TL) analysis represents promising molecular tool with which raise alarm regarding population decline, since telomere attrition is associated aging processes and accelerates after recurrent exposure stressors. In southern margin their range,...