Document Type

Thesis

Date of Degree Completion

Spring 2011

Degree Name

Bachelor of Science

Department

Biology

Committee Chair

Dr. Jason T. Irwin, Biology

Second Committee Member

Dr. Daniel Beck, Biology

Third Committee Member

Dr. Audrey D. Huerta, Director Science Honors Research Program

Abstract

This study compares the physiological responses to freezing of Pacific Chorus frogs (Pseudacris regilla) from low-elevation and high-elevation sites. During the winter months, Pacific Chorus frogs have the ability to freeze solid and revive upon thawing. They survive freezing because they store massive amounts of glycogen that they convert into glucose once freezing starts. Glucose is use (1) to protect the cells during freezing and (2) to support general metabolism through the entire winter. The hypothesis is that the frogs collected at the high-elevation site will have more glucose stored as glycogen because these frogs have to survive longer, harsher winter than the frogs from lower elevations.

Comments

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