A Geometric Morphometric Analysis of Tail Morphology in the Colombia Spotted Frog, Rana lutieventris

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Authors
Mitchell, Tim
Advisor
Grant Hokit
Marilyn Schendel
Kyle Strode
Editor
Date of Issue
2004-04-01
Subject Keywords
colombia spotted frog, Rana lutieventris, frogs, geometric morphometries, phenotypic plasticity, dragonfly larvae
Publisher
Citation
Series/Report No.
item.page.identifier
Title
A Geometric Morphometric Analysis of Tail Morphology in the Colombia Spotted Frog, Rana lutieventris
Other Titles
Type
thesis
Description
Abstract
Phenotypic plasticity is the result of environmental factors interacting with genes to influence the phenotype of individuals. Developing amphibian larvae may be influenced by the presence of tadpole predators. Rana lutieventris tadpoles were reared in the presence of a predator, presence of an injured conspecific, presence of both a mashed conspecific and predator, and a control of no predator or conspecific for a period of six weeks. Photographs were taken weekly to monitor tail growth. The photographs were digitized and the data was analyzed using geometric morphometries. Geometric morphometric software pooled the data, eliminated differences in size, position, and orientation to analyze the shape differences between the tadpoles in these four treatments. The data was statistically analyzed using multivariate analysis of covariance (MANCOVA). All three experimental treatments were found to cause enlarged tails, showing that R. lutieventris has the ability to respond to chemical cues and exhibit phenotypic plasticity.
Sponsors
Degree Awarded
Bachelor's
Semester
Spring
Department
Life & Environmental Sciences