Elasmobranch exploitation in Africa
M. Kroese and W. H. H. Sauer
Marine and Freshwater Research 49(7) 573 - 577
Abstract
The impact of fisheries on elasmobranchs in Africa is not well documented.
Available data suggest that there are no large shark fishing nations (>
10000 t year-1), reported landings for 1994 being around
39 000 t. This value is believed to be a underestimate, because of a lack of
data on catches and landings from the various different fishing methods and
the large number of nations fishing in African waters. Existing data are
mostly linked to industrial fisheries, although the artisanal sector could be
responsible for substantial catches. Landed by-catch and discard rates of
elasmobranchs are unknown for most commercial fisheries targeting teleosts.
Limited data sources allowed only crude estimates of catch. The artisanal
fishery is calculated to land a minimum of 20 000 t of sharks, whereas the
industrial trawl sector is likely to catch 23 000 t. A conservative estimate
for the African continent and the surrounding islands is ~95 000 t. The
quality of catch-and-effort data for both commercial and subsistence fisheries
on the African continent needs to be improved, and the by-catch issue should
be investigated through trained onboard observers.
Full text doi:10.1071/MF97122
© CSIRO 1998





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