Main content

Habitat Use, Movement Patterns, and Spatial Population Structure of Polyphenic Sunfish

Show full item record

Title: Habitat Use, Movement Patterns, and Spatial Population Structure of Polyphenic Sunfish
Author: Jarvis, Will
Department: Department of Integrative Biology
Program: Integrative Biology
Advisor: Robinson, Beren
Abstract: Populations are often spatially structured such that phenotype distributions reflect adaptive phenotype-habitat associations. I investigated two questions about how environmental heterogeneity contributes to spatially structured phenotypic variation in a polyphenic population of sunfish. 1) How does sunfish habitat use in exposed lake shorelines influence spatial population structure? I found that sunfish from exposed shoreline habitat varied in diet and phenotype among sites but were more similar in body form to sunfish from shallow littoral habitat than to sunfish from open water pelagic habitat. 2) How do patterns of connectivity between habitat patches likely influence spatial population structure? Using a between year mark-recapture study, I found rates of movement between habitats sufficient for gene flow to homogenize any genetic differences. Understanding patterns of habitat use and connectivity in polyphenic sunfish populations will generate hypotheses about how spatial population structure is generated and maintained in the initial stages of adaptive diversification.
URI: http://hdl.handle.net/10214/14271
Date: 2018-08
Rights: Attribution-NonCommercial-NoDerivs 2.5 Canada
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.


Files in this item

Files Size Format View Description
Jarvis_Will_201809_MSc.pdf 2.835Mb PDF View/Open Thesis Document

This item appears in the following Collection(s)

Show full item record

Attribution-NonCommercial-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada