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research
Genetics of plate morphology in an unusual population of threespine sticklebacks (Gasterosteus aculeatus)
Authors
JC Avise
Publication date
1 January 1976
Publisher
eScholarship, University of California
Abstract
A collection of Gasterosteus aculeatus from a single locality (Friant) in Madera County, California, contains individuals with low and high lateral plate morphology, and very few intermediates. Electrophoretic evidence on protein similarities at 15 genetic loci is compatible with the thesis that members of these two morphs belong to a single interbreeding population. This thesis is also supported by broods from laboratory crosses between morphs, which segregate for low and high plate counts. Laboratory crosses between Friant fish and those from geographically isolated populations often yield some progeny with intermediate plate counts. The demonstration of significantly different patterns of plate development in intralocality versus interlocality crosses evidences a contrasting genetic basis for plate determination in different populations of sticklebacks. © 1976, Cambridge University Press. All rights reserved
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Last time updated on 25/12/2021