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Individual repeatability of foraging behaviour in a marine predator, the great cormorant, Phalacrocorax carbo

Potier, Simon LU ; Alexandre, Carpentier; Grémillet, David; Leroy, Boris and Lescroël, Amélie (2015) In Animal Behaviour 103. p.83-90
Abstract
Intrapopulation variability, especially individual foraging specialization, has been investigated in many species. Nevertheless, the repeatability of foraging behaviour remains poorly understood. In particular, whether individuals differ in their respective degrees of repeatability still remains to be determined. Here, we estimated foraging behaviour repeatability in the great cormorant, at both the population and the individual levels, and assessed the effect of repeatability on individual foraging performance. At the population level, we found that some foraging variables were more repeatable (e.g. departure angle and trip duration) than others (e.g. time spent underwater per trip). At the individual level, we found differences in the... (More)
Intrapopulation variability, especially individual foraging specialization, has been investigated in many species. Nevertheless, the repeatability of foraging behaviour remains poorly understood. In particular, whether individuals differ in their respective degrees of repeatability still remains to be determined. Here, we estimated foraging behaviour repeatability in the great cormorant, at both the population and the individual levels, and assessed the effect of repeatability on individual foraging performance. At the population level, we found that some foraging variables were more repeatable (e.g. departure angle and trip duration) than others (e.g. time spent underwater per trip). At the individual level, we found differences in the degree of repeatability for each foraging variable, highlighting the presence of both highly flexible and highly consistent individuals in the population. The effect of repeatability on individual performance depended on the considered timescale: individual-level repeatability of time spent underwater per dive was negatively related to foraging efficiency while individual-level repeatability of time spent underwater per trip was positively related to foraging efficiency. Overall, our study demonstrates the importance of studying repeatability at the individual level and shows how both flexibility and consistency in animal behaviour shape their ability to extract energy from the environment. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
behavioural consistency, foraging efficiency, individual flexibility, individual repeatability, piscivorous bird
in
Animal Behaviour
volume
103
pages
83 - 90
publisher
Elsevier
external identifiers
  • scopus:84924709339
ISSN
1095-8282
DOI
10.1016/j.anbehav.2015.02.008
language
English
LU publication?
no
id
1e0cac37-bd3d-4da3-a54f-3409838dd2b6
date added to LUP
2017-03-23 11:10:58
date last changed
2017-09-24 05:09:03
@article{1e0cac37-bd3d-4da3-a54f-3409838dd2b6,
  abstract     = {Intrapopulation variability, especially individual foraging specialization, has been investigated in many species. Nevertheless, the repeatability of foraging behaviour remains poorly understood. In particular, whether individuals differ in their respective degrees of repeatability still remains to be determined. Here, we estimated foraging behaviour repeatability in the great cormorant, at both the population and the individual levels, and assessed the effect of repeatability on individual foraging performance. At the population level, we found that some foraging variables were more repeatable (e.g. departure angle and trip duration) than others (e.g. time spent underwater per trip). At the individual level, we found differences in the degree of repeatability for each foraging variable, highlighting the presence of both highly flexible and highly consistent individuals in the population. The effect of repeatability on individual performance depended on the considered timescale: individual-level repeatability of time spent underwater per dive was negatively related to foraging efficiency while individual-level repeatability of time spent underwater per trip was positively related to foraging efficiency. Overall, our study demonstrates the importance of studying repeatability at the individual level and shows how both flexibility and consistency in animal behaviour shape their ability to extract energy from the environment.},
  author       = {Potier, Simon and Alexandre, Carpentier and Grémillet, David and Leroy, Boris and Lescroël, Amélie},
  issn         = {1095-8282},
  keyword      = {behavioural consistency,foraging efficiency,individual flexibility,individual repeatability,piscivorous bird},
  language     = {eng},
  pages        = {83--90},
  publisher    = {Elsevier},
  series       = {Animal Behaviour},
  title        = {Individual repeatability of foraging behaviour in a marine predator, the great cormorant, Phalacrocorax carbo},
  url          = {http://dx.doi.org/10.1016/j.anbehav.2015.02.008},
  volume       = {103},
  year         = {2015},
}