LENGTH WEIGHT RELATIONSHIP AND RELATIVE CONDITION FACTOR OF INDIAN SHAD, TENUALOSA ILISHA FROM HOOGHLY ESTUARY SYSTEM, WEST BENGAL
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Authors
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SUDIPTA SARKAR
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SUDHIR KUMAR DAS
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DIBAKAR BHAKTA
Abstract
The study on the length weight relationship (LWR) and relative condition factor (Kn) of Indian Shad (Tenualosa ilisha) was conducted for a period of seven months (June to December, 2013) from Diamond Harbour area of Hooghly
estuarine system, West Bengal. During the period of investigation, 245 samples of unsexed Tenualosa ilisha having length of 210 to 420 mm and body weight of 115 to 775 g were examined. The LWR found for Tenualosa ilisha was W
= 0.0000206 L 2.817 for pooled samples. The correlation coefficient of 0.892 between length and weight was significant (P<0.05). The fish exhibited isometric growth with exponent 'b' value of 2.817 which is relatively low compared to earlier works in the locality. The Kn values varied from 0.981 to 1.052 with average of 1.013 indicating good condition of the fish.
Key words: Tenualosa ilisha, length-weight relationship, relative condition factor, Hooghly estuary system.
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