Please use this identifier to cite or link to this item: http://repositorio.ufpa.br/jspui/handle/2011/2209
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Type: Artigo de Periódico
Issue Date: 2008
Authors: RODRIGUES, Rosa Maria da Silva
SCHNEIDER, Horacio
SILVA, Simoni Santos da
SOUZA, Marcelo Nazareno Vallinoto de
SAINT-PAUL, Ulrich
SAMPAIO, Maria Iracilda da Cunha
Title: Low levels of genetic diversity depicted from mitochondrial DNA sequences in a heavily exploited marine fish (Cynoscion acoupa, Sciaenidae) from the Northern coast of Brazil
Citation: RODRIGUES, Rosa et al. Low levels of genetic diversity depicted from mitochondrial DNA sequences in a heavily exploited marine fish (Cynoscion acoupa, Sciaenidae) from the Northern coast of Brazil. Genetics and Molecular Biology, São Paulo, v. 31, n. 2, p. 487-492, 2008. Disponível em: <http://www.scielo.br/pdf/gmb/v31n2/a15v31n2.pdf>. Acesso em: 15 mar. 2011. <http://dx.doi.org/10.1590/S1415-47572008000300015>.
Abstract: The acoupa weakfish (Cynoscion acoupa - Sciaenidae) is a marine species of croaker with estuarine-dependent behavior, found in the western Atlantic from Panama to Argentina. It is one of the most exploited food fish on the northern coast of Brazil. In this study, DNA sequences were determined from the entire control region (D-loop) of the mitochondrial genome of 297 individuals collected during seven different months between December 2003 and August 2005 on the northern coast of Brazil (Amapá and Pará). Genetic variability expressed by haplotype (h = 0,892) and nucleotide (p = 0,003) diversities were low compared to other heavily exploited marine fish species from the western Atlantic and eastern Asia. AMOVA depicted a lack of genetic structuring among the samples from different years, indicating the presence of a single stock of C. acoupa within the sample area. The possible reasons for the low levels of genetic diversity are discussed. These results demonstrate a need for the monitoring of C. acoupa harvesting and the preservation of the estuaries within its geographic range, considering that this large fish depends on estuarine ecosystems during part of its life cycle.
Keywords: Peixe marinho
Sciaenidae
DNA mitocondrial
Filogenia molecular
ISSN: 1415-4757
Appears in Collections:Artigos Científicos - FBIO/IECOS

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