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Matching habitat choice influences movement decisions of sympatric ecotypes of pumpkinseed sunfish (Lepomis gibbosus)

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Title: Matching habitat choice influences movement decisions of sympatric ecotypes of pumpkinseed sunfish (Lepomis gibbosus)
Author: deLeeuw, Adam
Department: Department of Integrative Biology
Program: Integrative Biology
Advisor: Robinson, Beren
Abstract: Local adaptation to different environmental conditions can cause associations betwee n phenotype and environments that are reduced when individuals disperse randomly but can be enhanced when dispersal is non-random with respect to phenotype. Matching habitat choice (MHC) is a process where individuals select habitats to maximize performance based on phenotype which can facilitate local adaptation and adaptive divergence. Empirical evidence of MHC is limited because it is difficult to isolate from other mechanisms that form phenotype-habitat associations. I overcome this issue by transplanting pumpkinseed sunfish (Lepomis gibbosus) ecotypes across habitats and compared explicit models related to movement behaviour. MHC strongly affected habitat selection and potentially homing behaviour but was less important in leaving decisions. The non-random movement likely enhances phenotype-habitat associations that contribute to ecotype divergence.
URI: https://hdl.handle.net/10214/23733
Date: 2021-01
Rights: Attribution 4.0 International
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Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International