Applying Genetic Techniques to Study Remote Shark Fisheries in Northeastern Madagascar

Phaedra Doukakis; Robert H. Hanner; Mahmood S. Shivji; Cecilia Bartholomew; Demian D. Chapman; Eugene Wong; George Amato

doi:10.3109/19401736.2010.526112

Applying Genetic Techniques to Study Remote Shark Fisheries in Northeastern Madagascar

Phaedra Doukakis
, Robert H. Hanner
, Mahmood S. Shivji
, Cecilia Bartholomew
, Demian D. Chapman
, Eugene Wong
, George Amato

Department of Biological Sciences

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

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. © 2011 Informa UK, Ltd.

Original language	American English
Pages (from-to)	15-20
Number of pages	6
Journal	Mitochondrial DNA Part A
Volume	22
Issue number	SUPPL. 1
DOIs	https://doi.org/10.3109/19401736.2010.526112
State	Published - Oct 1 2011

Funding

acknowledge financial support received from the Wildlife Conservation Society and the Canadian Barcode of Life Network (via the Natural Sciences and Engineering Research Council of Canada and other sponsors listed at www.bolnet.ca). No other financial, consulting, or personal relationships have influenced this work and no writing assistance was obtained.

Funders
Wildlife Conservation Society
Natural Sciences and Engineering Research Council of Canada

ASJC Scopus Subject Areas

Genetics
Molecular Biology

Keywords

COI
Conservation
Endangered species
Fish tagging
ITS2
Shark fins
Shark fisheries
Species identification
Wildlife conservation

Disciplines

Biology
Genetics
Genetics and Genomics
Life Sciences
Marine Biology

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10.3109/19401736.2010.526112

Cite this

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title = "Applying Genetic Techniques to Study Remote Shark Fisheries in Northeastern Madagascar",

abstract = "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. {\textcopyright} 2011 Informa UK, Ltd.",

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AU - Amato, George

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AB - 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. © 2011 Informa UK, Ltd.

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Applying Genetic Techniques to Study Remote Shark Fisheries in Northeastern Madagascar

Abstract

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