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BIBTEX RIS

Chromosomal distribution of two multigene families and the unusual occurrence of an X1X1X2X2/X1X2Y sex chromosome system in the dolphinfish (Coryphaenidae): An evolutionary perspective

2014; Research Foundation of Ribeirão Preto; Volume: 13; Issue: 2 Linguagem: Inglês

10.4238/2014.april.3.19

ISSN

1676-5680

Autores

Rodrigo Xavier Soares, Luiz Antônio Carlos Bertollo, Marcelo de Bello Cioffi, Gideão Wagner Werneck Félix da Costa, Wagner Franco Molina,

Tópico(s)

Genetic diversity and population structure

Resumo

Dolphinfishes (Coryphaenidae) are pelagic predators distributed throughout all tropical and subtropical oceans and are very important for commercial, traditional, and sport fishing.This small family contains the Coryphaena hippurus and Coryphaena equiselis species whose chromosomal aspects remain unknown, despite recent advances in cytogenetic data assimilation for Perciformes.In this study, both species were cytogenetically analyzed using different staining techniques (C-, Ag-, and CMA 3 banding) and fluorescence in situ hybridization, to detect 18S rDNA and 5S rDNA.C. hippurus females exhibit 2n = 48 chromosomes, with 2m+4sm+42a (NF = 54).In C. equiselis, where both sexes could be analyzed, females displayed ©FUNPEC-RP www.funpecrp.com.br

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