Electrophoretic study on intraspecific variations and interspecific relationships of marine catfishes (Siluriformes, Ariidae) of Cananéia (São Paulo, Brazil): 2. Isozymes of skeletic muscle

Abstract

Ten enzymatic systems of skeletic muscle of four species of marine catfishes were analysed by Polyacrylamide flat gel electrophoresis. Out of 17 loci examined, six were polymorphic. The heterozygosities varied from 0.0018 to 0.0755, the proportions of polymorphic loci, from 0.0588 to 0.2353 and the genetic identities I of Nei, from 0.242 to 0.822. The degree of genetic identity among the species is illustrated by UPGMA dendrograms.Dez sistemas enzimáticos do músculo esquelético de quatro espécies de bagres marinhos foram analisados eletroforeticamente em géis de poliacrilamida. As heterozigosidades observadas variaram entre 0,0018 e 0,0755, as proporções de loci polimórficos, entre 0,0588 e 0,2353, e as identidades genéticas I de Nei, entre 0,242 e 0,822.0 grau de identidade genética entre as espécies foi ilustrado através de dendrogramas UPGMA.