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Corticosterone facilitates begging and affects resource allocation in the black-legged kittiwake
TLDR
Two functional implications are suggested of the increased corticosterone secretion during food shortages in the black-legged kittiwake: it facilitates begging in chicks, and it affects time allocated by parents to guarding young at the nest.
Dynamics of food availability, body condition and physiological stress response in breeding Black‐legged Kittiwakes
TLDR
The results suggest that, in addition to a seasonal change in bird physiology during reproduction, local ecological factors such as food availability affect circulating levels of corticosterone and adrenal response to acute stress.
The adrenocortical stress-response of Black-legged Kittiwake chicks in relation to dietary restrictions
TLDR
It is concluded that the physiological condition of Black-legged Kittiwake chicks can be assessed reliably by measuring circulating levels of corticosterone, and elevated baseline and acute stress-induced Corticosterone levels of chicks were negatively correlated with their fat reserves.
Dietary restriction causes chronic elevation of corticosterone and enhances stress response in red-legged kittiwake chicks
TLDR
It is suggested that nest-bound chicks, if food-stressed, might suffer deleterious effects of chronic elevation of corticosterone and be forced to suppress adrenocortical activity in response to prolonged food shortages.
Endocrine Responses to Unpredictable Environmental Events: Stress or Anti-Stress Hormones?1
TLDR
Data suggest that glucocorticosteroid secretions in response to LPFs not only trigger physiological and behavioral responses but also allow flexibility so that the response is integrated in relation to time of year (normal LHS) as well as individual differences owing to body condition, disease and social status.
Food availability and population processes: severity of nutritional stress during reproduction predicts survival of long‐lived seabirds
TLDR
The results suggest that CORT is a reliable measure of food availability and defines nutritional stress (stress) in kittiwakes, and conclude that severity of nutritional stress during reproduction is one of the major factors defining population processes in k Kittiwakes.
Resource allocation in breeding seabirds: responses to fluctuations in their food supply
TLDR
The results suggest that fluctuations in food supply affect resource allocation in seabirds, and a decrease in food abundance is likely to cause an increase in energy expenditures of parent BLKIs, whereas growth rates of their chicks are less affected.
A supergene determines highly divergent male reproductive morphs in the ruff
TLDR
It is shown that development into satellites and faeders is determined by a supergene consisting of divergent alternative, dominant and non-recombining haplotypes of an inversion on chromosome 11, which contains 125 predicted genes.
Stress hormones link food availability and population processes in seabirds
TLDR
It is found that CORT secretion in murres is independent of colony, reproductive stage effects, and gender of individuals, but is directly negatively correlated with abun- dance of their food.
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