Cytogenetic studies of three species of Glandulocaudinae (Pisces, Characiformes, Characidae)
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1995-01-01
Autores
Guimaraes, I. N. [UNESP]
Foresti de Almeida-Toledo, L. [UNESP]
Oliveira, C. [UNESP]
Foresti, F. [UNESP]
De Almeida Toledo Filho, S. [UNESP]
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Resumo
Cytogenetic studies of three species of the subfamily Glandulocaudinae showed that Mimagoniates microlepis presents 2n = 52 chromosomes (6M + 20SM + 18ST + 8A), Mimagoniates lateralis presents 2n = 52 chromosomes (6M + 20SM + 16ST + 10A) and Glandalocauda melanogenys presents 2n = 52 chromosomes (4M + 12SM + 22ST + 14A). The number of NOR-bearing chromosome pairs ranged from two to four. Differences in number and position of NORs at the species and population levels were detected, suggesting that several chromosome rearrangements occurred in the evolutionary process of this group. Some aspects related to the chromosome evolution of the Glandulocaudinae are discussed.
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animal tissue, chromosome NOR, chromosome number, evolution, fish, karyotype, nonhuman
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Revista Brasileira de Genetica, v. 18, n. 2, p. 185-189, 1995.