Predator-specific changes in the morphology and swimming performance of larval Rana lessonae

Wilson, R. S., Kraft, P. G. and Van Damme, R. (2005) Predator-specific changes in the morphology and swimming performance of larval Rana lessonae. Functional Ecology, 19 2: 238-244. doi:10.1111/j.1365-2435.2005.00958.x


Author Wilson, R. S.
Kraft, P. G.
Van Damme, R.
Title Predator-specific changes in the morphology and swimming performance of larval Rana lessonae
Journal name Functional Ecology   Check publisher's open access policy
ISSN 0269-8463
Publication date 2005-01-01
Year available 2005
Sub-type Article (original research)
DOI 10.1111/j.1365-2435.2005.00958.x
Open Access Status Not yet assessed
Volume 19
Issue 2
Start page 238
End page 244
Total pages 7
Editor D Robinson
K Goston
Place of publication Oxford
Publisher Blackwell Publishing Ltd
Language eng
Subject C1
270700 Ecology and Evolution
780105 Biological sciences
Abstract 1. We investigated the morphological responses of larval Rana lessonae to the presence of two predators with substantially different prey-detection and capture techniques; larval dragonflies (Aeshna cyanea) and the Pumpkinseed Sunfish (Lepomis gibossus). 2. We also examined the functional implications of any predator-induced morphological variation on their swimming ability by assessing performance during the initial stages of a startle response. 3. We found the morphological responses of larval R. lessonae were dependent on the specific predator present. Tadpoles raised in the presence of dragonfly larvae preying upon conspecific tadpoles developed total tail heights 5.4% deeper and tail muscles 4.7% shallower than tadpoles raised in a non-predator environment, while tadpoles raised with sunfish possessed tails 2% shallower and tail muscles 2.5% higher than non-predator-exposed tadpoles. 4. Predator-induced morphological variation also significantly influenced swimming performance. Tadpoles raised with sunfish possessed swimming speeds 9.5 and 14.6% higher than non- and dragonfly predator groups, respectively. 5. Thus, the expression of these alternative predator-morphs leads to a functional trade-off in performance between the different environments.
Keyword Inducible Defence
Phenotypic Plasticity
Ecology
Inducible Defense
Anuran Larvae
Tail Shape
Locomotion
Responses
Daphnia
Costs
Ciliophora
Selection
Q-Index Code C1
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 16:09:13 EST