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Estimation of mortality rates, exploitation rates and ratios of Lepturacanthus savala (Cuvier) and Eupleurogrammus muticus (Gray)

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Relation http://eprints.cmfri.org.in/6478/
 
Title Estimation of mortality rates, exploitation rates and ratios of Lepturacanthus savala (Cuvier) and Eupleurogrammus muticus (Gray)
 
Creator Rizvi, F Anees
Biradar, R S
Chakraborty, S K
Deshmukh, V D
 
Subject Fish Mortality
 
Description The contribution of ribonfish to the total fish catch in the world has gone up
from 1.1% in 1990 to 1.8% in 1998. However, ever since the pressure has increased
in the coastal waters, the catches have started showing signs of decline.
The same is also reflected in two species, Lepturacanthus savala and
Eupleurogrammus muticus recorded from the dol net in Mumbai waters. In
the present investigation the mortality rates and ratios of two species of
ribbonfish are recorded. The pooled total, natural and fishing mortality of the
former species is 4.15, 1.30, and 2.86 respectively whereas that of the latter
species is 4.31, 1.15 and 3.16 respectively. The pooled exploitation ratio (E)
and exploitation rate (U) of L. savala and E. muticus were 0.68 & 0.66 and
0.73 & 0.72 respectively. Though for both the species the E is well beyond the
optimum E of 0.5, for E.muticus it is very much on the higher side. Thus, a
reduction in the fishing effort is required to prevent future damage to the
stock.
 
Date 2005
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/6478/1/Rizvi.pdf
Rizvi, F Anees and Biradar, R S and Chakraborty, S K and Deshmukh, V D (2005) Estimation of mortality rates, exploitation rates and ratios of Lepturacanthus savala (Cuvier) and Eupleurogrammus muticus (Gray). Indian Journal of Fisheries, 52 (1). pp. 93-98.