Maximum sustainable yield for the Passur river fishery of Bangladesh using surplus production model. Bangladesh Journal of Zoology.
Category:- Journal; Year:- 2021
Discipline:- Fisheries & Marine Resource Technology Discipline
School:- Life Science School
Abstract
Maximum sustainable yield (MSY), fishing effort (fmsy) and total
allowable catch (TAC) of major fishery in the Passur River, Bangladesh were
estimated using surplus production model (Schaefer and Fox model) with
observation-error estimator based on four years (2011-2014) catch and effort
data. Fox model was especially highlighted in this study; the estimated value
of MSY was 4.61 kg with corresponding fmsy of 13.51 units (200m2SBN/day).
Moreover, the mean value of MSY and TAC with 95% confidence interval in
stochastic method was 4.53 kg and 4.08 kg respectively with the 13.22 units of
fishing effort (fmsy). The overall results provide clear evidence that the
fishery of the Passur River is being overexploited in the months from December to
March. Sustainable exploitation of this stock can be assured through reducing
present fishing effort. In addition, TAC might be incorporated along with
several existing fisheries management measures to ensure the compensation of
this stock towards long term sustainability.