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Biology
Completed Project

Bean Beetle Heritability Estimates Using Fecundity From Callosobruchus maculatus

Deanna Havey ’18 and Mary Ellen Czesak (Biology)

Heritability estimates can provide insight into how much variation of a quantitative trait is due to genetic variation of the population and how much is due to the environment. Heritability can also help us understand if there’s enough variation in a population to show phenotypic change over the course of several generations in a new environment. A Half-Sib mating design was implemented for two bean beetle populations of the species Callosobruchus maculatus to calculate heritability estimates for quantitative behavioral traits. Bean beetles from Burkina Faso and Southern India that host on cowpea and mung beans respectively were used. The offspring of the Half-Sib design were raised either on cowpea or mung bean, providing data for the same population raised on differing environments. One of the environments was its native host bean and one was a novel host. Using fecundity data such as egg counts and distribution behavior, we aim to calculate heritability estimates with R for this particular Half-Sib experiment. Results and analysis will be presented.