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Brazilian Archives of Biology and Technology

versión On-line ISSN 1678-4324


RENESTO, Erasmo; ZAWADZKI, Cláudio Henrique  y  REVALDAVES, Eloísa. Biochemical taxonomy of Crenicichla (Pisces: Perciformes: Cichlidae) of the Iguaçu River, Brazil. Braz. arch. biol. technol. [online]. 2001, vol.44, n.1, pp.15-22. ISSN 1678-4324.

Samples of Crenicichla iguassuensis and a morph from the Iguaçu River which differed from C. iguassuensis by its lips morphology were examined by isozyme starch electrophoresis technique. The analysis of 27 enzyme loci exhibited a genetic identity of 0.993 between the two morphs. No diagnostic locus was found that permitted to distinguish the two Crenicichla morphs. The data obtained in this investigation did not support the existence of two distinct species for this genus in the Iguaçu River, which suggested that the morphs stood for two polymorphic forms of Crenicichla iguassuensis.

Palabras clave : Isozyme polymorphism; biochemical systematics; biochemical taxonomy; genetics of Crenicichla; genetic identity.

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