Energetic consequences of time-activity budgets for a breeding seabird

Collins, PM, Halsey, LG, Arnould, John, Shaw, PJA, Dodd, S and Green, JA 2016, Energetic consequences of time-activity budgets for a breeding seabird, Journal of zoology, vol. 300, no. 3, pp. 153-162, doi: 10.1111/jzo.12370.

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Title Energetic consequences of time-activity budgets for a breeding seabird
Author(s) Collins, PM
Halsey, LG
Arnould, JohnORCID iD for Arnould, John orcid.org/0000-0003-1124-9330
Shaw, PJA
Dodd, S
Green, JA
Journal name Journal of zoology
Volume number 300
Issue number 3
Start page 153
End page 162
Total pages 10
Publisher Wiley- Blackwell
Place of publication London, Eng.
Publication date 2016-11
ISSN 1469-7998
Keyword(s) time-energy budget
energy expenditure
energy ceiling
behavioural compensation
Rissa tridactyla
Science & Technology
Life Sciences & Biomedicine
Summary How animals allocate their time to different behaviours has important consequences for their overall energy budget and reflects how they function in their environment. This potentially affects their ability to successfully reproduce, thereby impacting their fitness. We used accelerometers to record time-activity budgets of 21 incubating and chick-rearing kittiwakes (Rissa tridactyla) on Puffin Island, UK. These budgets were examined on a per day and per foraging trip basis. We applied activity-specific estimates of energy expenditure to the kittiwakes' time-activity budgets in order to identify the costs of variation in their allocation of time to different behaviours. Estimates of daily energy expenditure for incubating kittiwakes averaged 494 ± 20 kJ d-1 while chick-rearing birds averaged 559 ± 11 kJ d-1. Time-activity budgets highlighted that kittiwakes did not spend a large proportion of their time flying during longer foraging trips, or during any given 24-h period. With time spent flying highlighted as the driving factor behind elevated energy budgets, this suggests behavioural compensation resulting in a possible energetic ceiling to their activities. We also identified that kittiwakes were highly variable in the proportion of time they spent either flying or on the water during foraging trips. Such variation meant that using forage trip duration alone to predict energy expenditure gave a mean error of 19% when compared to estimates incorporating the proportion of a foraging trip spent flying. We have therefore highlighted that trip duration alone is not an accurate indicator of energy expenditure.
Language eng
DOI 10.1111/jzo.12370
Field of Research 060201 Behavioural Ecology
060203 Ecological Physiology
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Wiley- Blackwell
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085545

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