The Effects of the Presence of Dragonfly Predators on the Morphology of the Columbia Spotted Frog (Rana luteiventris)

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Authors
Bodley, Kyle
Advisor
Grant Hokit
Gerald Shields
Jack Oberweiser
Editor
Date of Issue
2003-04-01
Subject Keywords
colombia spotted frog, Rana lutieventris
Publisher
Citation
Series/Report No.
item.page.identifier
Title
The Effects of the Presence of Dragonfly Predators on the Morphology of the Columbia Spotted Frog (Rana luteiventris)
Other Titles
Type
thesis
Description
Abstract
A laboratory experiment was preformed to determine the effects of predation on the morphological plasticity of the Columbia spotted frog (Rana luteiventris). Four treatments, each comprised of five replicates included predators, mashed conspecifics, predators and mashed conspecifics and a control group. Different morphological features were measured and a statistical analysis of these features was performed to determine the overall effect of predation. Predation, or the presence of chemical cues released from the predator or the skin of the injured amphibian, had a significant effect on muscle development. Specifically, tadpoles reared in the presence of predators or mashed conspecifics developed thicker tail musculature. This modified tail development could be advantageous in avoiding predators. This study may lead to a better understanding of the environmental dependent phenotypic plasticity of the spotted frog.
Sponsors
Degree Awarded
Bachelor's
Semester
Spring
Department
Life & Environmental Sciences