Nina Cossin‐Sevrin

The BEAC, an epigenetic clock for birds

Mikaela Hukkanen, Simon Jarman, Alyssa Maree Budd, Flávia A. N. Fernandes et autres

Abstract Epigenetic clocks are powerful tools for estimating both chronological and biological age, enabling the integration of age information into population monitoring, demographic modelling, and research on the ecophysiology and evolution of ageing. Most epigenetic clocks so far have been developed for …

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The effects of early-life ambient temperature on the cloacal microbiome of a wild bird - an experimental approach

Suvi Ruuskanen, Lotta Hollmen, Antoine Stier, Bin‐Yan Hsu et autres

Early‐life adversity modulates growth trajectories and red blood cell mitochondrial metabolism in king penguin chicks

Nina Cossin‐Sevrin, Katja Anttila, Mathilde Lejeune, Céline Bocquet et autres

Abstract In many avian species, variation in breeding phenology is known to affect reproductive success. In king penguins, the breeding cycle lasts more than a year, and the start of egg-laying extends over 3 months, with early-breeders laying eggs around December and …

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Warm and cool temperatures decrease early-life telomere length in wild pied flycatchers

Clemence Furic, Coline Marciau, Bin‐Yan Hsu, Nina Cossin‐Sevrin et autres

Abstract Climate change represents a major challenge for avian species. It is characterized by an increase in average ambient temperatures, but also in occurrence of extreme weather events, such as heat weaves and cold snaps. These abrupt temperature changes can modify the …

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Sexual Dimorphism in Red Blood Cell Mitochondrial Respiration during Breeding Fasts in King Penguins

Nina Cossin‐Sevrin, Céline Bocquet, Camille Lemonnier, Thomas Faulmann et autres

AbstractBecause of their extended fasting period on land during breeding, male king penguins have been extensively studied in order to unravel the physiological adaptations that enable them to fast while having to find a partner, defend their territory, or brood their offspring. …

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The effects of early-life ambient temperature on the gut microbiome of a wild bird? an experimental approach

Suvi Ruuskanen, Lotta Hollmen, Antoine Stier, Bin‐Yan Hsu et autres

Abstract Vertebrate gut microbiome has significant effects on host development, health, and fitness. Multiple external factors contribute to gut microbiome variation, and the role of ambient temperature has gained increasing attention. Yet, temperature effects are often tested in extremes and in captive …

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Correction: Effect of prenatal glucocorticoids and thyroid hormones on developmental plasticity of mitochondrial aerobic metabolism, growth and survival: an experimental test in wild great tits

Nina Cossin‐Sevrin, Bin‐Yan Hsu, Coline Marciau, Vincent A. Viblanc et autres

There were several errors in J. Exp. Biol. (2022) 225, jeb243414 (https://doi.org/10.1242/jeb.243414).In the Materials and Methods, there was an error in the OXPHOS coupling efficiency equation, which should be (1–LEAK/CI+II) and not (1–LEAK)/CI+II).The authors also report an error regarding the model selection …

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Early-life environmental effects on mitochondrial aerobic metabolism: a brood size manipulation in wild great tits

Nina Cossin‐Sevrin, Antoine Stier, Mikaela Hukkanen, Sandrine Zahn et autres

In avian species, the number of chicks in the nest and subsequent sibling competition for food are major components of the offspring's early-life environment. A large brood size is known to affect chick growth, leading in some cases to long-lasting effects for …

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From maternal glucocorticoid and thyroid hormones to epigenetic regulation of offspring gene expression: An experimental study in a wild bird species

Mikaela Hukkanen, Bin‐Yan Hsu, Nina Cossin‐Sevrin, Mélanie Crombecque et autres

Abstract Offspring phenotype at birth is determined by its genotype and the prenatal environment including exposure to maternal hormones. Variation in both maternal glucocorticoids and thyroid hormones can affect offspring phenotype, but the underlying molecular mechanisms, especially those contributing to long‐lasting effects, …

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Early-life environmental effects on mitochondrial aerobic metabolism: an experimental brood size manipulation in wild great tits

Nina Cossin‐Sevrin, Antoine Stier, Mikaela Hukkanen, Sandrine Zahn et autres

Abstract Parental care (including postnatal provisioning) is a major component of the offspring’s early-life environment. In avian species, the number of chicks in the nest and subsequent sibling competition for food are known to affect chick’s growth, leading in some cases to …

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No evidence for associations between brood size, gut microbiome diversity and survival in great tit (Parus major) nestlings

Martta Liukkonen, Mikaela Hukkanen, Nina Cossin‐Sevrin, Antoine Stier et autres

BACKGROUND: The gut microbiome forms at an early stage, yet data on the environmental factors influencing the development of wild avian microbiomes is limited. As the gut microbiome is a vital part of organismal health, it is important to understand how it …

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From maternal glucocorticoid and thyroid hormones to epigenetic regulation of gene expression: an experimental study in a wild bird species

Mikaela Hukkanen, Bin‐Yan Hsu, Nina Cossin‐Sevrin, Mélanie Crombecque et autres

Offspring phenotype at birth is determined by its genotype and the prenatal environment including exposure to maternal hormones. Variation in both maternal glucocorticoids and thyroid hormones can affect offspring phenotype. However, the underlying molecular mechanisms shaping the offspring phenotype, especially those contributing …

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