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Paradox lost: variable colour-pattern geometry is associated with differences in movement in aposematic frogs

Rojas,B, Devillechabrolle,J and Endler,JA 2014, Paradox lost: variable colour-pattern geometry is associated with differences in movement in aposematic frogs, Biology letters, vol. 10, no. 6, pp. 1-5, doi: 10.1098/rsbl.2014.0193.

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Title Paradox lost: variable colour-pattern geometry is associated with differences in movement in aposematic frogs
Author(s) Rojas,B
Devillechabrolle,J
Endler,JAORCID iD for Endler,JA orcid.org/0000-0002-7557-7627
Journal name Biology letters
Volume number 10
Issue number 6
Start page 1
End page 5
Total pages 5
Publisher The Royal Society (of London)
Place of publication London, England
Publication date 2014-06-18
ISSN 1744-9561
1744-957X
Keyword(s) Poison frog
Polymorphism
Predator-prey interactions
Visual illusions
Warning signals
Science & Technology
Life Sciences & Biomedicine
Biology
Ecology
Evolutionary Biology
Life Sciences & Biomedicine - Other Topics
Environmental Sciences & Ecology
SNAKE THAMNOPHIS-ORDINOIDES
ANTIPREDATOR BEHAVIOR
CORRELATIONAL SELECTION
DENDROBATES-TINCTORIUS
SEXUAL-DIMORPHISM
EVOLUTION
SIGNALS
PREY
Summary Aposematic signal variation is a paradox: predators are better at learning and retaining the association between conspicuousness and unprofitability when signal variation is low. Movement patterns and variable colour patterns are linked in non-aposematic species: striped patterns generate illusions of altered speed and direction when moving linearly, affecting predators' tracking ability; blotched patterns benefit instead from unpredictable pauses and random movement. We tested whether the extensive colour-pattern variation in an aposematic frog is linked to movement, and found that individuals moving directionally and faster have more elongated patterns than individuals moving randomly and slowly. This may help explain the paradox of polymorphic aposematism: variable warning signals may reduce protection, but predator defence might still be effective if specific behaviours are tuned to specific signals. The interacting effects of behavioural and morphological traits may be a key to the evolution of warning signals. © 2014 The Author(s) Published by the Royal Society. All rights reserved.
Language eng
DOI 10.1098/rsbl.2014.0193
Field of Research 060399 Evolutionary Biology not elsewhere classified
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
Grant ID DP110010421
Copyright notice ©2014, The Royal Society (of London)
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071580

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