Premium
Substantial changes in the genetic basis of tadpole morphology of Rana lessonae in the presence of predators
Author(s) -
KRAFT P. G.,
WILSON R. S.,
FRANKLIN C. E.,
BLOWS M. W.
Publication year - 2006
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1111/j.1420-9101.2006.01185.x
Subject(s) - biology , tadpole (physics) , predator , predation , context (archaeology) , trait , phenotypic plasticity , adaptation (eye) , evolutionary biology , dragonfly , ecology , odonata , zoology , computer science , programming language , paleontology , physics , particle physics , neuroscience
Predator‐induced morphological plasticity is a model system for investigating phenotypic plasticity in an ecological context. We investigated the genetic basis of the predator‐induced plasticity in Rana lessonae by determining the pattern of genetic covariation of three morphological traits that were found to be induced in a predatory environment. Body size decreased and tail dimensions increased when reared in the presence of preying dragonfly larvae. Genetic variance in body size increased by almost an order of magnitude in the predator environment, and the first genetic principal component was found to be highly significantly different between the two environments. The across environment genetic correlation for body size was significantly below 1 indicating that different genes contributed to this trait in the two environments. Body size may therefore be able to respond to selection independently in the two environments to some extent.