Extreme boldness precedes starvation mortality in six-lined trumpeter (Pelates sexlineatus)

Biro, Peter A. and Booth, David J. 2009, Extreme boldness precedes starvation mortality in six-lined trumpeter (Pelates sexlineatus), Hydrobiologia, vol. 635, no. 1, pp. 395-398, doi: 10.1007/s10750-009-9902-x.

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Title Extreme boldness precedes starvation mortality in six-lined trumpeter (Pelates sexlineatus)
Author(s) Biro, Peter A.ORCID iD for Biro, Peter A. orcid.org/0000-0002-3565-240X
Booth, David J.
Journal name Hydrobiologia
Volume number 635
Issue number 1
Start page 395
End page 398
Total pages 4
Publisher Springer Netherlands
Place of publication Dordrecht, The Netherlands
Publication date 2009-11-01
ISSN 0018-8158
Keyword(s) behaviour
risk taking
Summary Fishes are often subjected to seasonal and spatial patchiness of food sources. We tested how risk-taking behaviour in the six-lined trumpeter, an estuarine seagrass resident fish, changed with hunger level in a laboratory experiment. When repeatedly offered a risky source of food, well-fed fish did not approach it and all fish survived over a one-month trial. In contrast, fish deprived of all food boldly first approached the risky food source after only a few days without food in some cases, or after many days in other cases, and then continued to approach risky food each time it was presented. Larger individuals were more bold (and had longer starvation endurance) than smaller ones, and after statistically controlling for these size effects, there were consistent individual differences in the propensity to take risks (i.e. boldness). These results show that food- and individual-dependent boldness will together affect vulnerability to predators and influence predation rates when resources become scarce.
Language eng
DOI 10.1007/s10750-009-9902-x
Field of Research 060201 Behavioural Ecology
060801 Animal Behaviour
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C4.1 Letter or note
Copyright notice ©2009, Springer Science+Business Media B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047957

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