Item – Theses Canada

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OCLC number
1252220634
Link(s) to full text
LAC copy
Author
Jarvis, Will.
Title
Habitat Use, Movement Patterns, and Spatial Population Structure of Polyphenic Sunfish.
Degree
Master of Science -- University of Guelph, 2018
Publisher
[Guelph, Ontario] : University of Guelph 2018
Description
1 online resource
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.
Other link(s)
atrium.lib.uoguelph.ca
hdl.handle.net
Subject
Research Subject Categories
Ecology
Evolution
Gene Flow
Connectivity
Adaptive Divergence