Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance
International audience We studied the changes in heart rate (HR) associated with metabolic rate of incubating and resting adult wandering albatrosses (Diomedea exulans) on the Crozet Islands. Metabolic rates of resting albatrosses fitted with external HR recorders were measured in a metabolic chambe...
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ftccsdartic:oai:HAL:hal-00192227v1 2024-02-27T08:39:55+00:00 Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance Weimerskirch, Henri Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2002 https://hal.science/hal-00192227 en eng HAL CCSD hal-00192227 https://hal.science/hal-00192227 the journal of experience biology https://hal.science/hal-00192227 the journal of experience biology, 2002, 205, pp.475-483 basal metabolic rate wandering albatross Diomedea exulans handling effect human disturbance heart rate oxygen consumption [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2002 ftccsdartic 2024-01-28T03:15:02Z International audience We studied the changes in heart rate (HR) associated with metabolic rate of incubating and resting adult wandering albatrosses (Diomedea exulans) on the Crozet Islands. Metabolic rates of resting albatrosses fitted with external HR recorders were measured in a metabolic chamber to calibrate the relationship between HR and oxygen consumption (V . O·) (V . O·=0.074´HR+0.019, r2=0.567, P<0.001, where V . O· is in ml kg–1 min–1 and HR is in beats min–1). Incubating albatrosses were then fitted with HR recorders to estimate energy expenditure of albatrosses within natural field conditions. We also examined the natural variation in HR and the effects of human disturbance on nesting birds by monitoring the changes in HR. Basal HR was positively related to the mass of the individual. The HR of incubating birds corresponded to a metabolic rate that was 1.5-fold (males) and 1.8-fold (females) lower than basal metabolic rate (BMR) measured in this and a previous study. The difference was probably attributable to birds being stressed while they were held in the metabolic chamber or wearing a mask. Thus, previous measurements of metabolic rate under basal conditions or for incubating wandering albatrosses are likely to be overestimates. Combining the relationship between HR and metabolic rate for both sexes, we estimate that wandering albatrosses expend 147 kJ kg–1 day–1 to incubate their eggs. In addition, the cost of incubation was assumed to vary because (i) HR was higher during the day than at night, and (ii) there was an effect of wind chill (<0 °C) on basal HR. The presence of humans in the vicinity of the nest or after a band control was shown to increase HR for extended periods (2–3 h), suggesting that energy expenditure was increased as a result of the disturbance. Lastly, males and females reacted differently to handling in terms of HR response: males reacted more strongly than females before handling, whereas females took longer to recover after being handled. Article in Journal/Newspaper Crozet Islands Diomedea exulans Wandering Albatross Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
basal metabolic rate wandering albatross Diomedea exulans handling effect human disturbance heart rate oxygen consumption [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
basal metabolic rate wandering albatross Diomedea exulans handling effect human disturbance heart rate oxygen consumption [SDE.BE]Environmental Sciences/Biodiversity and Ecology Weimerskirch, Henri Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
topic_facet |
basal metabolic rate wandering albatross Diomedea exulans handling effect human disturbance heart rate oxygen consumption [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience We studied the changes in heart rate (HR) associated with metabolic rate of incubating and resting adult wandering albatrosses (Diomedea exulans) on the Crozet Islands. Metabolic rates of resting albatrosses fitted with external HR recorders were measured in a metabolic chamber to calibrate the relationship between HR and oxygen consumption (V . O·) (V . O·=0.074´HR+0.019, r2=0.567, P<0.001, where V . O· is in ml kg–1 min–1 and HR is in beats min–1). Incubating albatrosses were then fitted with HR recorders to estimate energy expenditure of albatrosses within natural field conditions. We also examined the natural variation in HR and the effects of human disturbance on nesting birds by monitoring the changes in HR. Basal HR was positively related to the mass of the individual. The HR of incubating birds corresponded to a metabolic rate that was 1.5-fold (males) and 1.8-fold (females) lower than basal metabolic rate (BMR) measured in this and a previous study. The difference was probably attributable to birds being stressed while they were held in the metabolic chamber or wearing a mask. Thus, previous measurements of metabolic rate under basal conditions or for incubating wandering albatrosses are likely to be overestimates. Combining the relationship between HR and metabolic rate for both sexes, we estimate that wandering albatrosses expend 147 kJ kg–1 day–1 to incubate their eggs. In addition, the cost of incubation was assumed to vary because (i) HR was higher during the day than at night, and (ii) there was an effect of wind chill (<0 °C) on basal HR. The presence of humans in the vicinity of the nest or after a band control was shown to increase HR for extended periods (2–3 h), suggesting that energy expenditure was increased as a result of the disturbance. Lastly, males and females reacted differently to handling in terms of HR response: males reacted more strongly than females before handling, whereas females took longer to recover after being handled. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Weimerskirch, Henri |
author_facet |
Weimerskirch, Henri |
author_sort |
Weimerskirch, Henri |
title |
Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
title_short |
Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
title_full |
Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
title_fullStr |
Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
title_full_unstemmed |
Heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
title_sort |
heart rate and energy expenditure of incubating wandering albatrosses: basal levels, natural variation, and the effects of human disturbance |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-00192227 |
genre |
Crozet Islands Diomedea exulans Wandering Albatross |
genre_facet |
Crozet Islands Diomedea exulans Wandering Albatross |
op_source |
the journal of experience biology https://hal.science/hal-00192227 the journal of experience biology, 2002, 205, pp.475-483 |
op_relation |
hal-00192227 https://hal.science/hal-00192227 |
_version_ |
1792047002179076096 |