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Chromosome characterization of the fish Trichogenes longipinnis. A possible basic karyotype of trichomycteridae

Neuza Rejane Wille Lima; Pedro Manoel Galetti Junior

Departamento de Ciências Biológicas, Universidade Federal de São Carlos, 13560 São Carlos, SP, Brasil

ABSTRACT

A karyotypic study of 11 Trichogenes longipinnis specimens revealed a diploid number of 2n = 54 and a chromosomal formula of 36M + 12SM + 6ST. C-banding showed heterogeneous constitutive nucleolar organizer region was located on the terminal portion of the long arm of a medium-sized metacentric pair.

Keywords: Fish; Trichogenes longipinnis; karyotype.

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