Abstract
Abstract The genetic heterogeneity of mitochondrial DNA (mtDNA) in Roanoke River striped bass Morone saxatilis was examined by restriction endonuclease analysis of mtDNA isolated from 32 specimens captured during the 1989 and 1990 spawning runs. Restriction fragment banding patterns based on restriction site polymorphisms revealed six distinct genotypes, designated I–VI, among the 32 sampled individuals. The predominant genotype, designated genotype I, was found in 59% of the individuals sampled, while genotypes defined by Acc I–Nde I (genotype II), Taq I (genotype III), Taq I–Hinf I (genotype IV), Dde I (genotype V), and Spe I (genotype VI) were found in 25%, 7%, 3%, 3%, and 3% of the individuals. Five distinct mtDNA fragment length variants, designated classes A–E, were identified from the same 32 individuals. The number and size of individual length variants agreed with those identified previously in striped bass populations from geographically distant sites. Analysis of the distribution of length vari...
Published Version
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