Modeling foraging range for breeding colonies of thick-billed murres Uria lomvia in the Eastern Canadian Arctic and potential overlap with industrial development

Gaston, Anthony J.; Elliott, Kyle H.; Ropert‐Coudert, Yan; Kato, Akira; Macdonald, Christie A.; Gilchrist, H. Grant

doi:10.1016/j.biocon.2013.09.018

Cited by 35 publications

(28 citation statements)

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“…Likewise, old female little penguins (Eudyptula minor) had longer, but not deeper, dives than middle-aged females (Zimmer et al 2011), although a second study found no difference in dive behaviour or efficiency between young and old penguins at the same study site (Pelletier et al 2014). Apparently, murres are able to adjust to physiological changes such that there is no net effect on behaviour, at least at our study site where foraging conditions are relatively good (Gaston et al 2013).…”

Section: N O E V I D E N C E F O R B E H a V I O U R A L S E N E S C mentioning

confidence: 79%

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Ageing gracefully: physiology but not behaviour declines with age in a diving seabird

et al. 2014

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Summary 1.A higher proportion of long-lived animals die from senescence than short-lived animals, yet many long-lived homeotherms show few signs of physiological ageing in the wild. This may, however, differ in long-lived diving homeotherms that frequently encounter hypoxic conditions and have very high metabolic rates. 2. To examine ageing within a long-lived diving homeotherm, we studied resting metabolism and thyroid hormones (N = 43), blood oxygen stores (N = 93) and foraging behaviour (N = 230) of thick-billed murres (Uria lomvia). Because murres dive exceptionally deep for their size and have a very high metabolism, we expected that ageing murres would show signs of physiological senescence. We paid particular attention to resting metabolism as we argue that these maintenance costs reflect those experienced during deep dives. 3. Blood oxygen stores (haematocrit), resting metabolic rate and thyroid hormone levels all declined significantly with age in incubating murres 3-30 years of age. In birds measured longitudinally 3 years apart, thyroid hormone levels and haematocrit were both significantly lower, suggesting progressive changes within individuals rather than selective disappearance of individuals with high metabolic rates. Within our longitudinal data set, we found no effect of age on dive depth, dive shape or behavioural aerobic dive limit. 4. A meta-analysis of changes in resting metabolism with age across 15 animal species demonstrated that such declines are pervasive across most of the kingdom. The rate of decline was highest in species with high energy expenditure supporting a linkage between metabolism and senescence. 5. Physiological changes occurred in tandem with advancing age in murres, but offset each other such that there was no detectable decline in behavioural performance.Key-words: basal metabolic rate, behavioural senescence, cost of hypoxia, diving, physiological senescence, rate of living theory, resting metabolic rate, thick-billed murre

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Section: N O E V I D E N C E F O R B E H a V I O U R A L S E N E S C mentioning

confidence: 79%

“…Apparently, murres are able to adjust to physiological changes such that there is no net effect on behaviour, at least at our study site where foraging conditions are relatively good (Gaston et al . ).…”

Section: Discussionmentioning

confidence: 97%

Ageing gracefully: physiology but not behaviour declines with age in a diving seabird

et al. 2014

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“…Greenwalt, 1962 ; Alerstam et al , 2007 ; Elliott et al , 2013 ); an increase of 1500 km may create greater stress for those species. In addition, H:L ratios were higher at the larger Digges Island colony, where birds commute almost twice as far due to stronger intraspecific competition ( Gaston et al , 2013 ). Murres have the highest relative flight costs of any bird studied to date ( Elliott et al , 2013 ) and would therefore be expected to be particularly susceptible to activity stress.…”

Section: Discussionmentioning

confidence: 99%

Leucocyte profiles of Arctic marine birds: correlates of migration and breeding phenology

Little¹,

Boyd²,

Ballard³

et al. 2015

Conserv Physiol

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“…Our framework is built around a bio-energetic model that simulates daily time and energy budgets for individual guillemots and razorbills during the breeding season, building on a number of previous bio-energetic models for these species (Gaston et al, 2007(Gaston et al, , 2013Houston et al, 1996;Langton et al, 2014;Thaxter et al, 2013)…”

Section: Bio-energetic Modelmentioning

confidence: 99%

A mechanistic framework to inform the spatial management of conflicting fisheries and top predators

Hentati‐Sundberg

Olin

Evans

et al. 2020

Journal of Applied Ecology

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Modeling foraging range for breeding colonies of thick-billed murres Uria lomvia in the Eastern Canadian Arctic and potential overlap with industrial development

Cited by 35 publications

References 58 publications

Ageing gracefully: physiology but not behaviour declines with age in a diving seabird

Ageing gracefully: physiology but not behaviour declines with age in a diving seabird

Leucocyte profiles of Arctic marine birds: correlates of migration and breeding phenology

A mechanistic framework to inform the spatial management of conflicting fisheries and top predators

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