GENETIC-STRUCTURE OF A FOUNDING WHITE CRAPPIE POPULATION (TELEOSTEI, POMOXIS-ANNULARIS) IN AN OKLAHOMA RESERVOIR

A survey of genetic variation using starch-gel electrophoresis was con ducted on a founding white crappie population in Copan Lake, a new Okl ahoma reservoir. Of 38 loci surveyed, two (IDH-B and CK-C) were found to be polymorphic. Both maintained three alleles in the majority of sa mples identified by location, sex and age. All samples had fewer than expected IDH-B heterozygotes, suggesting that the founding population represented a mixture of stocks. In addition, significant shifts in ag e composition and allele frequencies at locations sampled immediately following impoundment further suggested the existence of multiple stoc ks. This study highlights the need to periodically monitor demographic and allelic composition of populations prone to fluctuations.