Incomplete catch statistics make it impossible for
fisheries managers and scientists to get a true picture of the status
of shark species. An FAO report (Castro et al., 1999) lamented the
paucity of good fisheries data and noted that severe declines were
seen for nearly all shark species with ten years of catch and landing
data. Capture production figures for sharks, rays and chimaerids
in 2005 are listed as 771,105 tonnes (estimate from FISHSTAT (FAO,
2000)), a figure known to be an underestimate as many countries do
not report by-catch statistics and it excludes illegally taken chondrichthyans.Bonfil (1994)andVannuccini (1999)both suggest that
true capture production figures are twice the FAO estimates.Clarke
et al. (2006)used a fishery-independent method to estimate the
worldwide shark catch for the shark fin trade. They analysed trade
data from Asian markets and estimated 1.7 million tonnes of shark
per year were caught for the fin trade, a value 3–4 times higher than
the FAO estimate of the shark fin trade for 2000. An accurate picture of the status of shark populations worldwide requires major
improvements to catch data records, and one of the limiting factors
has been the problem of accurate identification of morphologically
similar species and processed shark material.
Incomplete catch statistics make it impossible forfisheries managers and scientists to get a true picture of the statusof shark species. An FAO report (Castro et al., 1999) lamented thepaucity of good fisheries data and noted that severe declines wereseen for nearly all shark species with ten years of catch and landingdata. Capture production figures for sharks, rays and chimaeridsin 2005 are listed as 771,105 tonnes (estimate from FISHSTAT (FAO,2000)), a figure known to be an underestimate as many countries donot report by-catch statistics and it excludes illegally taken chondrichthyans.Bonfil (1994)andVannuccini (1999)both suggest thattrue capture production figures are twice the FAO estimates.Clarkeet al. (2006)used a fishery-independent method to estimate theworldwide shark catch for the shark fin trade. They analysed tradedata from Asian markets and estimated 1.7 million tonnes of sharkper year were caught for the fin trade, a value 3–4 times higher thanthe FAO estimate of the shark fin trade for 2000. An accurate picture of the status of shark populations worldwide requires majorimprovements to catch data records, and one of the limiting factorshas been the problem of accurate identification of morphologicallysimilar species and processed shark material.
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