Applying genetic techniques to study remote shark fisheries in northeastern Madagascar
| Autor: | Cecilia Bartholomew, Mahmood S. Shivji, Demian D. Chapman, Robert Hanner, George Amato, Phaedra Doukakis, Eugene Wong |
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| Rok vydání: | 2011 |
| Předmět: |
Conservation of Natural Resources
Molecular Sequence Data Fishing Fisheries Endangered species Polymerase Chain Reaction Electron Transport Complex IV Species Specificity Common species DNA Ribosomal Spacer Madagascar Genetics Animals DNA Barcoding Taxonomic Molecular Biology Wildlife conservation Population Density Sphyrna lewini biology Ecology Sequence Analysis DNA biology.organism_classification Rhizoprionodon acutus Fishery Bays Genetic Techniques Animal Fins Sharks Carcharhinus brevipinna Bay |
| Zdroj: | Mitochondrial DNA. 22:15-20 |
| ISSN: | 1940-1744 1940-1736 |
| Popis: | Background and aims. The shark fisheries of Madagascar remain largely unstudied. Remoteness makes fisheries monitoring challenging while the high value of shark fins combined with the extreme poverty in Madagascar creates intensive pressure on shark resources.Materials and methods. We use DNA barcoding and species-specific PCR assays to characterize shark fisheries in Antongil Bay in northeastern Madagascar.Results. The 239 samples taken from individuals collected in 2001 and 2002 correspond to 19 species. The four most common species were Sphyrna lewini, Rhizoprionodon acutus, Carcharhinus brevipinna, and C. sorrah. Antongil Bay may be a breeding area for C. brevipinna, C. leucas, and S. lewini.Conclusion. Local names are generally not a useful proxy for monitoring the species harvested in the fishery. Conservation efforts should characterize species exploitation at present, create spatial and temporal fishing restrictions to protect endangered species, and restrict large mesh gillnets. |
| Databáze: | OpenAIRE |
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