Karyotypic characterization of two species of the genus Imparfinis(Teleostei, Siluriformes, Heptapteridae)
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概要
- 論文の詳細を見る
Two fish species of the genus Imparfinis were cytogenetically analyzed. Imparfinis piperatus cytotype A showed 2n=58 chromosomes, with 32 of them being metacentrics (M) and 26 submetacentrics (SM) ; cytotype B displayed 26M, 22SM, 8 subtelocentrics (ST), and 2 acrocentrics (A). Both karyotypes presented interstitial nucleolar organizer regions (NORs) located on the long arms of the first chromosome pair, a metacentric pair. Imparfuis cf. piperatus, shows 2n=56 chromosomes (22M, 26SM, 4ST, and 4A) and interstitial NORs on the long arm of chromosome pair 28, an acrocentric pair. Small differences were observed in the pattern of C-band positive heterochromatin distribution between the species analyzed, with a prevalence of pericentromeric and telomeric segments. The karyotypic differences suggest that a taxonomic revision of the genus Imparfinis is necessary.
- 財団法人染色体学会の論文
著者
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Oliveira Claudio
Departamento De Morfologia Instituto De Biociencias Unesp Campus De Botucatu
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Foresti Fausto
Departamento De Morfologia Instituto De Biociencias Unesp Campus De Botucatu
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Vissotto Patricia
Departamento de Morfologia, Instituto de Biociencias, Universidade Estadual Paulista
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Vissotto Patricia
Departamento De Morfologia Instituto De Biociencias Universidade Estadual Paulista
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