National Marine Ecosystem Diagnostic Analysis (MEDA)- Madagascar
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Date
20122012
Author
United Nations Environment Programme
United Nations Development Programme
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RT Generic T1 National Marine Ecosystem Diagnostic Analysis (MEDA)- Madagascar A1 United Nations Environment Programme, United Nations Development Programme YR 2012 , 2012 LK https://wedocs.unep.org/20.500.11822/25891 PB United Nations Development Programme AB TY - GEN T1 - National Marine Ecosystem Diagnostic Analysis (MEDA)- Madagascar AU - United Nations Environment Programme, United Nations Development Programme Y1 - 2012, 2012 UR - https://wedocs.unep.org/20.500.11822/25891 PB - United Nations Development Programme AB - @misc{20.500.11822_25891 author = {United Nations Environment Programme, United Nations Development Programme}, title = {National Marine Ecosystem Diagnostic Analysis (MEDA)- Madagascar}, year = {2012 , 2012}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/25891} } @misc{20.500.11822_25891 author = {United Nations Environment Programme, United Nations Development Programme}, title = {National Marine Ecosystem Diagnostic Analysis (MEDA)- Madagascar}, year = {2012 , 2012}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/25891} } TY - GEN T1 - National Marine Ecosystem Diagnostic Analysis (MEDA)- Madagascar AU - United Nations Environment ProgrammeUnited Nations Environment Programme, United Nations Development Programme UR - https://wedocs.unep.org/20.500.11822/25891 PB - United Nations Development Programme AB -View/Open
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Madagascar has valuable living marine resources. Among the 123 species of sharks and rays present in Madagascar, 31 are classified by IUCN as threatened, 1 is endangered (the skate Rostroraja alba), 17 are vulnerable (the whale shark and endemic skate Dipturus crosnieri) and 10 are near threatened. All three species of sawfishes are classified as “critically endangered” on the IUCN Red List and in Appendix I of CITES. Today, sawfishes are very rare, probably due to shrimp trawling, use of gill nets across rivers and installation of fish barriers in estuaries. Approximately 50 species of sharks and rays of neritic and oceanic deep waters of Madagascar are affected by the industrial tuna fishery (longline and seine fishing), industrial fisheries, industrial shrimp fishery, artisanal and traditional fisheries. Due to their slow reproductive rates, Chondrichthyes are very vulnerable to overexploitation.
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