SREL Reprint #0395




Biochemical Genetics of Sunfish Genetic Subdivision of Fish Populations Inhabiting Heated Waters

Darrell Yardley, John C. Avise, J. Whitfield Gibbons, and Michael H. Smith



Electrophoretic techniques were used to examine alleie frequencies at polymorphic genetic loci in populations of largemouth bass (Micropterus salmoides), mosquito fish (Gambusia affinis), and bluegill, (Lepomis macrocbirus) for evidence of generic changes associated with their inhabiting waters receiving thermal effluent from nuclear reactors.  Comparisons were made between populations inhabiting natural bodies and those, living in waters receiving thermal effluent.  There were no clear effects of thermal effluent on allele or genotype frequency at any of the observed loci.  However, there is significant regional genetic heterogeneity, and two species showed significant differences in alleie frequencies between lentic and iotic environments.


SREL Reprint #0395

Yardley, D., J.C. Avise, J.W. Gibbons, and M.H. Smith. 1974. Biochemical genetics of sunfish. III. Genetic subdivision of fish populations inhabiting heated waters. p. 255-263. In Thermal Ecology, edited by J.W. Gibbons and R.R. Sharitz. CONF 730505. Atomic Energy Commission.

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