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Present Status of the Sustainable Fishing Limits for Hilsa Shad in the northern Bay of Bengal, India

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Relation http://eprints.cmfri.org.in/14283/
https://link.springer.com/article/10.1007/s40011-018-0963-3
https://doi.org/10.1007/s40011-018-0963-3
 
Title Present Status of the Sustainable Fishing Limits for Hilsa Shad in the northern Bay of Bengal, India
 
Creator Das, Isha
Hazra, Sugata
Das, Sourav
Giri, Sandip
Maity, Sourav
Ghosh, Shubhadeep
 
Subject Fisheries management
Conservation
 
Description The hilsa, Tenualosa ilisha fishery in the northern
Bay of Bengal (nBoB) is passing through a crisis
manifested by the persistent decline of fish catch in spite of
increasing efforts. During the period 2002–2015, the
number of boats engaged in the fishery increased by 25%
while the hilsa catch decreased by 13%. The exponential
value (b) and condition factor (K) of hilsa has also
decreased by 46% and 28% respectively. The value of
fishing mortality (F = 2.34 year-1) has considerably
exceeded the natural mortality (M = 0.56 year-1) during
the study period. It is observed that in place of maximum
exploitation rate (Emax) of 0.78, the current exploitation
rate (E) of hilsa is 0.81 which is above the sustainable limit.
It is a matter of serious concern that with 75% probability
the first spawners of the population are being targeted by
the present fishing practice. The present study observes that
the hilsa population of nBoB are being significantly overexploited
in the present level of fishing pressure. The
maximum sustainable yield (MSY) limit for hilsa is
estimated to be around 25,440 tons per year with the corresponding
effort (fMSY) that may be deployed to achieve
the above mentioned catch ranged from 3571 to 3987
(number of boats). It can be inferred that the hilsa fishery in
the nBoB is being unsustainably exploited.
 
Date 2019
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/14283/1/Proc.%20Natl.%20Acad.%20Sci.%2C%20India_2019_Shubhadeep%20Ghosh_Present%20Status%20of%20the%20Sustainable%20Fishing%20Limits%20for%20Hilsa%20Shad.pdf
Das, Isha and Hazra, Sugata and Das, Sourav and Giri, Sandip and Maity, Sourav and Ghosh, Shubhadeep (2019) Present Status of the Sustainable Fishing Limits for Hilsa Shad in the northern Bay of Bengal, India. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 89. pp. 525-532.