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Growth, mortality and stock assessment of Arius arius (Hamilton, 1822) from Hooghly-Matlah estuary, West Bengal

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Title Growth, mortality and stock assessment of Arius arius (Hamilton, 1822) from Hooghly-Matlah estuary, West Bengal
Not Available
 
Creator B.B. Chirwatkar
Sudhir Kumar Das
Dibakar Bhakta
T.S. Nagesh
S. Behera
 
Subject Arius arius, Growth parameters, Hooghly-Matlah estuary, Mortality, Stock assessment
 
Description Not Available
The growth, mortality, and stock assessment of Arius arius were estimated based on monthly length-frequency analysis data collected from the Hooghly-Matlah estuary of West Bengal, India from April 2017 to March 2018. The estimated growth parameters were as L∞ = 278 mm, K = 0.97 yr-1, and t0 = -0.0889 years. The different mortality coefficients Z, M, and F were obtained as 5.25 yr-1, 1.79 yr-1, and 3.46 yr-1, respectively. The calculated exploitation ratio (E) was found as 0.66, and the M/K value as 1.845 indicating overexploitation of the fish. The recruitment was found throughout the year with two peaks and the value of Lc was found at 56.00 mm. The estimated virtual population analysis (VPA) indicated that the highest fishing mortality (F) of 3.4499 was observed at the 190-200 mm length class, followed by 3.2393 from the 180-190 mm length class. The fishery was found at the overexploitation level and measures are needed to regulate it for promoting its sustainability.
WBUAFS
 
Date 2021-09-01T10:54:52Z
2021-09-01T10:54:52Z
2021-04-01
 
Type Research Paper
 
Identifier Chirwatkar, B. B., Das, S. K., Bhakta, D., Nagesh, T. S., & Behera, S. (2021). Growth, mortality and stock assessment of Arius arius (Hamilton, 1822) from Hooghly-Matlah estuary, West Bengal.
0379-5136
http://krishi.icar.gov.in/jspui/handle/123456789/61182
 
Language English
 
Relation Not Available;
 
Publisher CSIR-NISCAIR