Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery

Oman’s fishery resources are exploited by artisanal and industrial fisheries, but the former accounts for almost 90% of landings. Within the artisanal fishery, sharks have traditionally been harvested for their flesh, but the development of a valuable export market for shark fin has led to increased...

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Main Authors: Henderson, A., McIlwain, Jennifer, Al-Oufi, H., Al-Sheile, S., Al-Abri, N.
Format: Journal Article
Published: National Inquiry Services Centre 2009
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/7241
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author Henderson, A.
McIlwain, Jennifer
Al-Oufi, H.
Al-Sheile, S.
Al-Abri, N.
author_facet Henderson, A.
McIlwain, Jennifer
Al-Oufi, H.
Al-Sheile, S.
Al-Abri, N.
author_sort Henderson, A.
building Curtin Institutional Repository
collection Online Access
description Oman’s fishery resources are exploited by artisanal and industrial fisheries, but the former accounts for almost 90% of landings. Within the artisanal fishery, sharks have traditionally been harvested for their flesh, but the development of a valuable export market for shark fin has led to increased utilisation of this resource, and anecdotal information suggests that shark abundance has decreased in recent years. Whereas management of the shark fishery is desirable, the biological and socio-economical data on which to base any management plan are lacking. The present study was undertaken to collect size frequency and sex ratio information from the shark species most commonly encountered in the artisanal landings, namely Carcharhinus falciformis, C. limbatus, C. macloti, C. sorrah, Iago omanensis, Loxodonmacrorhinus, Rhizoprionodon acutus and Sphyrna lewini. The occurrence of large female sharks in the landings, combined with a high proportion of juveniles of certain species, suggests that speciesspecific size restrictions should be considered in any management plan for Oman’s shark fishery.
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spelling curtin-20.500.11937-72412017-09-13T14:41:03Z Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery Henderson, A. McIlwain, Jennifer Al-Oufi, H. Al-Sheile, S. Al-Abri, N. Indian Ocean artisanal fishery shark management Oman’s fishery resources are exploited by artisanal and industrial fisheries, but the former accounts for almost 90% of landings. Within the artisanal fishery, sharks have traditionally been harvested for their flesh, but the development of a valuable export market for shark fin has led to increased utilisation of this resource, and anecdotal information suggests that shark abundance has decreased in recent years. Whereas management of the shark fishery is desirable, the biological and socio-economical data on which to base any management plan are lacking. The present study was undertaken to collect size frequency and sex ratio information from the shark species most commonly encountered in the artisanal landings, namely Carcharhinus falciformis, C. limbatus, C. macloti, C. sorrah, Iago omanensis, Loxodonmacrorhinus, Rhizoprionodon acutus and Sphyrna lewini. The occurrence of large female sharks in the landings, combined with a high proportion of juveniles of certain species, suggests that speciesspecific size restrictions should be considered in any management plan for Oman’s shark fishery. 2009 Journal Article http://hdl.handle.net/20.500.11937/7241 10.2989/AJMS.2009.31.2.11.883 National Inquiry Services Centre restricted
spellingShingle Indian Ocean
artisanal fishery
shark
management
Henderson, A.
McIlwain, Jennifer
Al-Oufi, H.
Al-Sheile, S.
Al-Abri, N.
Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery
title Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery
title_full Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery
title_fullStr Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery
title_full_unstemmed Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery
title_short Size distributions and sex ratios of sharks caught by Oman’s artisanal fishery
title_sort size distributions and sex ratios of sharks caught by oman’s artisanal fishery
topic Indian Ocean
artisanal fishery
shark
management
url http://hdl.handle.net/20.500.11937/7241