Class Year

2020

Date

4-22-2020

Document Type

Thesis

Distinguished Thesis

Yes

Degree Name

Bachelor of Arts (BA)

Department or Program

Biology

Second Department or Program

Neuroscience

First Advisor

Flavia Barbosa

Second Advisor

Shubhik DebBurman

Third Advisor

Nicholas Wallin

Abstract

Life-history theory aims to understand how different environments result in differential investment in fitness associated traits. While previous research has demonstrated trade-offs between traits from the same phenotypic level (e.g. two morphological traits), many studies show positive or no correlation between pairs of costly traits. One hypothesis that may explain the inconsistency of trade-offs in the literature is that trade-offs may occur across phenotypic levels (e.g. morphology versus behavior). In turn, this study aims to identify the presence of cross-level trade-offs in the bean beetle, Callosobruchus maculatus. In this experiment, copulatory behaviors and morphology were analyzed for both males and females. While trade-offs were reported between copulatory behaviors and morphology for both males and females, traits, subjected to trade-offs, only covaried when analyzing cross-level relationships. This study is the first to report the novel finding that trade-offs may be the result of cross-level investment.

Language

English

Available for download on Saturday, May 01, 2021


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