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Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil
The ongoing decline in abundance and diversity of shark stocks, primarily due to uncontrolled fishery exploitation, is a worldwide problem. An additional problem for the development of conservation and management programmes is the identification of species diversity within a given area, given the mo...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Sociedade Brasileira de Genética
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036939/ https://www.ncbi.nlm.nih.gov/pubmed/21637699 http://dx.doi.org/10.1590/S1415-47572009005000039 |
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author | da Silva Rodrigues-Filho, Luis Fernando da Rocha, Tainá Carreira do Rêgo, Péricles Sena Schneider, Horacio Sampaio, Iracilda Vallinoto, Marcelo |
author_facet | da Silva Rodrigues-Filho, Luis Fernando da Rocha, Tainá Carreira do Rêgo, Péricles Sena Schneider, Horacio Sampaio, Iracilda Vallinoto, Marcelo |
author_sort | da Silva Rodrigues-Filho, Luis Fernando |
collection | PubMed |
description | The ongoing decline in abundance and diversity of shark stocks, primarily due to uncontrolled fishery exploitation, is a worldwide problem. An additional problem for the development of conservation and management programmes is the identification of species diversity within a given area, given the morphological similarities among shark species, and the typical disembarkation of processed carcasses which are almost impossible to differentiate. The main aim of the present study was to identify those shark species being exploited off northern Brazil, by using the 12S-16S molecular marker. For this, DNA sequences were obtained from 122 specimens collected on the docks and the fish market in Bragança, in the Brazilian state of Pará. We identified at least 11 species. Three-quarters of the specimens collected were either Carcharhinus porosus or Rhizoprionodon sp, while a notable absence was the daggernose shark, Isogomphodon oxyrhyncus, previously one of the most common species in local catches. The study emphasises the value of molecular techniques for the identification of cryptic shark species, and the potential of the 12S-16S marker as a tool for phylogenetic inferences in a study of elasmobranchs. |
format | Text |
id | pubmed-3036939 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Sociedade Brasileira de Genética |
record_format | MEDLINE/PubMed |
spelling | pubmed-30369392011-06-02 Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil da Silva Rodrigues-Filho, Luis Fernando da Rocha, Tainá Carreira do Rêgo, Péricles Sena Schneider, Horacio Sampaio, Iracilda Vallinoto, Marcelo Genet Mol Biol Evolutionary Genetics The ongoing decline in abundance and diversity of shark stocks, primarily due to uncontrolled fishery exploitation, is a worldwide problem. An additional problem for the development of conservation and management programmes is the identification of species diversity within a given area, given the morphological similarities among shark species, and the typical disembarkation of processed carcasses which are almost impossible to differentiate. The main aim of the present study was to identify those shark species being exploited off northern Brazil, by using the 12S-16S molecular marker. For this, DNA sequences were obtained from 122 specimens collected on the docks and the fish market in Bragança, in the Brazilian state of Pará. We identified at least 11 species. Three-quarters of the specimens collected were either Carcharhinus porosus or Rhizoprionodon sp, while a notable absence was the daggernose shark, Isogomphodon oxyrhyncus, previously one of the most common species in local catches. The study emphasises the value of molecular techniques for the identification of cryptic shark species, and the potential of the 12S-16S marker as a tool for phylogenetic inferences in a study of elasmobranchs. Sociedade Brasileira de Genética 2009 2009-05-01 /pmc/articles/PMC3036939/ /pubmed/21637699 http://dx.doi.org/10.1590/S1415-47572009005000039 Text en Copyright © 2009, Sociedade Brasileira de Genética. http://creativecommons.org/licenses/by/2.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Evolutionary Genetics da Silva Rodrigues-Filho, Luis Fernando da Rocha, Tainá Carreira do Rêgo, Péricles Sena Schneider, Horacio Sampaio, Iracilda Vallinoto, Marcelo Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil |
title | Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil |
title_full | Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil |
title_fullStr | Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil |
title_full_unstemmed | Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil |
title_short | Identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the Northern coast of Brazil |
title_sort | identification and phylogenetic inferences on stocks of sharks affected by the fishing industry off the northern coast of brazil |
topic | Evolutionary Genetics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036939/ https://www.ncbi.nlm.nih.gov/pubmed/21637699 http://dx.doi.org/10.1590/S1415-47572009005000039 |
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