Publication Date:
2021-05-19
Description:
The local commonly used kreol name for Ranina ranina is krab ziraf. The krab ziraf fishery in Seychelles started functioning as a commercial fishery in 1986 when the resource was identified as potentially viable. Prior to this time these crab stocks were unexploited. In keeping with the Seychelles Fishing Authority (SFA) policy of monitoring catch and effort in new fisheries a research programme was implemented to assess the state of the Seychelles stock and determine the viability of the fishery as a whole.
The objective of this report is to provide an indication of the state of the crab stock at the present fishing levels and give estimates of the standing stock biomass and the potential yield of the fishery.
The biomass estimates give a range of between 2460 tonnes and 4486 tonnes for the Mahe plateau. For the calculations of the potential yield these figures were used to derive MSY estimates. The MSY estimates range between 381.36 tonnes and 695.44 tonnes taken as the most conservatively calculated estimates.
Given that only an approximate 30 tonnes of krab ziraf are caught per annum the MSY estimates would suggest that the stocks has the potential to be more intensively exploited.
Description:
Published
Keywords:
Ranina ranina
;
Biomass
;
Crab fisheries
;
Potential yield
;
Stock assessment
Repository Name:
AquaDocs
Type:
Report
Format:
306266 bytes
Format:
1104669 bytes
Format:
application/pdf
Format:
application/pdf
Format:
39pp.
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