Greater costs of inducible behavioural defences at cooler temperatures in larvae of the mosquito, Aedes notoscriptus

van Uitregt, Vincent O., Hurst, Timothy P. and Wilson, Robbie S. (2013) Greater costs of inducible behavioural defences at cooler temperatures in larvae of the mosquito, Aedes notoscriptus. Evolutionary Ecology, 27 1: 13-26. doi:10.1007/s10682-012-9576-0


Author van Uitregt, Vincent O.
Hurst, Timothy P.
Wilson, Robbie S.
Title Greater costs of inducible behavioural defences at cooler temperatures in larvae of the mosquito, Aedes notoscriptus
Formatted title
Greater costs of inducible behavioural defences at cooler temperatures in larvae of the mosquito, Aedes notoscriptus
Journal name Evolutionary Ecology   Check publisher's open access policy
ISSN 0269-7653
1573-8477
Publication date 2013-01
Year available 2012
Sub-type Article (original research)
DOI 10.1007/s10682-012-9576-0
Volume 27
Issue 1
Start page 13
End page 26
Total pages 14
Place of publication Dordrecht, Netherlands
Publisher Springer
Collection year 2013
Language eng
Abstract The evolutionary maintenance of inducible defences is governed by the costs and benefits of the defensive traits. The defensive traits should increase the chances of survival in the presence of predators, but be costly in their absence. The costs and benefits of inducible defensive traits can be influenced by environmental conditions, which subsequently affect the ability of prey to induce those defensive traits. We examine how temperature affects the costs of behavioural defences in larval mosquitoes, Aedes notoscriptus, which reduce activity in the presence of predator cues to limit detectability. The costs of reducing activity could either be exacerbated at warmer temperatures via increased metabolic demand, or ameliorated at warmer temperatures via accelerated development reducing exposure time. We compared life history traits of A. notoscriptus reared in control conditions to those exposed to predation cues as larvae at 18, 23 and 28 °C. Larvae reared in predation cues reduced activity, grew and developed slower and emerged later and smaller. While the reduction in activity increased with temperature, the negative effects on life history of A. notoscriptus were greatest at the coolest temperature. Our results show that the costs of inducible defences in A. notoscriptus are temperature dependent. This work suggests that variation in the thermal environment may have a strong influence on the dynamics of predator-prey interactions and the evolutionary maintenance of plasticity of defensive traits in natural populations.
Keyword Predation
Predator-induced plasticity
Temperature
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 24 May 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
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Created: Tue, 29 Jan 2013, 21:09:45 EST by Gail Walter on behalf of School of Biological Sciences