Use este identificador para citar ou linkar para este item: http://repositorio.inpa.gov.br/handle/123/2631
Título: Karyological evidence for cryptic species of piranha within Serrasalmus rhombeus (Characidae, Serrasalminae) in the Amazon
Autor(es): Celeste Mutuko Nakayama
Michel Jegu
Jorge Ivan Rebelo Porto
Eliana Feldberg
Assunto: Amazon Basin
chromosomes
espécies crípticas
ISSN: 0045-8511
Revista: Copeia
Volume: 2001
Resumo: Cytogenetic data obtained for Serrasalmus rhombeus revealed two cytotypes (cytotype 1 and cytotype 2) at four sampling sites. Cytotype 1 consists of 2n = 60, 20M + 24SM + 6ST + 10A and was detected in specimens from Negro River (Anavilhanas Islands), Solimões River (Camaleão Lake), confluence of Negro and Solimões Rivers (Catalão Lake), and Uatumã River. Cytotype 2 consists of 2n = 58, 22M + 24SM + 2ST + 10A and was detected in specimens from Catalão and Camaleão Lakes. In Cytotype 2, the first chromosome pair was almost twice the size of second pair, and the constitutive heterochromatin pattern of each cytotype is distinct. The two cytotypes occurred sympatrically at Catalão and Camaleão Lakes, and no intermediates between the cytotypes were detected, suggesting each cytotype represents a different fish species.
URI: http://repositorio.inpa.gov.br/handle/123/2631
ISSN: 0045-8511
DOI: http://dx.doi.org/10.1643/0045-8511(2001)001[0866:KEFACS]2.0.CO;2
Local de publicação: Estados Unidos
Aparece nas coleções:Coordenação de Biodiversidade (CBIO)

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