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How does corticosterone affect parental behaviour and reproductive success? A study of prolactin in black-legged kittiwakes
Summary 1. An emergency life-history stage is expressed in breeding vertebrates when the immediate survival is threatened by poor energetic conditions (i.e. allostatic overload). This emergencyExpand
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Flexibility in the bimodal foraging strategy of a high Arctic alcid, the little auk Alle alle
A bimodal foraging strategy has previously been described for procellariiform seabird species and is thought to have evolved in response to local resource availability being too low for adult birdsExpand
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Daily energy expenditure increases in response to low nutritional stress in an Arctic‐breeding seabird with no effect on mortality
Summary 1. The regulation of energy expenditure in relation to food availability and its consequences for individual fitness in free-ranging animals are poorly understood. Increased daily energyExpand
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Thyroid hormones correlate with resting metabolic rate, not daily energy expenditure, in two charadriiform seabirds
Summary Thyroid hormones affect in vitro metabolic intensity, increase basal metabolic rate (BMR) in the lab, and are sometimes correlated with basal and/or resting metabolic rate (RMR) in a fieldExpand
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Sex‐specific provisioning behaviour in a monomorphic seabird with a bimodal foraging strategy
Sexual differences in foraging and provisioning behaviour have been observed in several size-dimorphic seabird species. These differences are usually thought to be driven by size-related mechanismsExpand
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Climate change and phenological responses of two seabird species breeding in the high-Arctic
The timing of breeding is a life-history trait that can greatly affect fitness, because suc- cessful reproduction depends on the match between the food requirements for raising young and the seasonalExpand
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Inter-Colony Comparison of Diving Behavior of an Arctic Top Predator: Implications for Warming in the Greenland Sea
The goal of this study was to assess how diverse oceanographic conditions and prey communities affect the foraging behavior of little auks Alle alle. The Greenland Sea is characterized by 3 distinctExpand
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Fat or lean: adjustment of endogenous energy stores to predictable and unpredictable changes in allostatic load
Summary The ability to store energy endogenously is an important ecological mechanism that allows animals to buffer predictable and unpredictable variation in allostatic load. The secretion ofExpand
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Thyroid Hormones Correlate with Basal Metabolic Rate but Not Field Metabolic Rate in a Wild Bird Species
Thyroid hormones (TH) are known to stimulate in vitro oxygen consumption of tissues in mammals and birds. Hence, in many laboratory studies a positive relationship between TH concentrations and basalExpand
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Resting and daily energy expenditures during reproduction are adjusted in opposite directions in free‐living birds
Summary 1. Reproduction is energetically expensive, and daily energy expenditure (DEE) often peaks during the period of rearing young. The ‘potentiation’ hypothesis predicts that high DEE needs to beExpand
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