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Full-Text Articles in Life Sciences
Mercury Exposure And Short-Term Consequences On Physiology And Reproduction In Antarctic Petrels, Alice Carravieri, Jérôme Fort, Arnaud Tarroux, Yves Cherel, Oliver P. Love, Solène Prieur, Maud Brault-Favrou, Paco Bustamante, Sébastien Descamps
Mercury Exposure And Short-Term Consequences On Physiology And Reproduction In Antarctic Petrels, Alice Carravieri, Jérôme Fort, Arnaud Tarroux, Yves Cherel, Oliver P. Love, Solène Prieur, Maud Brault-Favrou, Paco Bustamante, Sébastien Descamps
Biological Sciences Publications
Mercury (Hg) is a pervasive contaminant reaching Antarctic environments through atmospheric transport and deposition. Seabirds as meso to top predators can accumulate high quantities of Hg through diet. Reproduction is one of the most sensitive endpoints of Hg toxicity in marine birds. Yet, few studies have explored Hg exposure and effects in Antarctic seabirds, where increasing environmental perturbations challenge animal populations. This study focuses on the Antarctic petrel Thalassoica antarctica from Svarthamaren, Antarctica, where the world's largest breeding population is thought to be in decline. Hg and the stable isotopes of carbon (δ13C, proxy of feeding habitat) and nitrogen (δ15N, …
Chickadees Faced With Unpredictable Food Increase Fat Reserves But Certain Components Of Their Immune Function Decline, Emily A. Cornelius, François Vézina, Lyette Regimbald, Fanny Hallot, Magali Petit, Oliver P. Love, William H. Karasov
Chickadees Faced With Unpredictable Food Increase Fat Reserves But Certain Components Of Their Immune Function Decline, Emily A. Cornelius, François Vézina, Lyette Regimbald, Fanny Hallot, Magali Petit, Oliver P. Love, William H. Karasov
Integrative Biology Publications
In winter, temperate resident birds are often faced with periodic low natural food availability. This reduction or unpredictability in resource availability might then have a negative impact on immune function, given that immune system support is highly resource dependent. We investigated the balance between energetic and immune management in captive black-capped chickadees (Poecile atricapilus) by manipulating the predictability of resources. The control group received food ad lib. every day, while the experimental group received a reduced amount of food on random days and food ad lib. on all other days. We measured two key metrics of energetic management (body and …