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| Aguiar,Jonas; Schneider,Horacio; Gomes,Fátima; Carneiro,Jeferson; Santos,Simôni; Rodrigues,Luis R.; Sampaio,Iracilda. |
| The tambaqui, Colossoma macropomum, is the most popular fish species used for aquaculture in Brazil but there is no study comparing genetic variation among native and farmed populations of this species. In the present study, we analyzed DNA sequences of the mitochondrial DNA to evaluate the genetic diversity among two wild populations, a fry-producing breeding stock, and a sample of fish farm stocks, all from the region of Santarém, in the west of the Brazilian state of Pará. Similar levels of genetic diversity were found in all the samples and surprisingly the breeding stock showed expressive representation of the genetic diversity registered on wild populations. These results contrast considerably with those of the previous study of farmed stocks in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tambaqui; Mitochondrial DNA; Genetic variability; Aquaculture. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401439 |
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| Rodrigues,Rosa; Schneider,Horacio; Santos,Simôni; Vallinoto,Marcelo; Sain-Paul,Ulrich; Sampaio,Iracilda. |
| 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 (pi = 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cynoscion acoupa; Acoupa weakfish; Sciaenidae; Low genetic diversity; Mitochondrial DNA; D-loop. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000300015 |
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