AGE, GROWTH, LENGTH-WEIGHT RELATIONSHIP AND RELATIVE CONDITION IN HILSA, TENUALOSA ILISHA (HAMILTON) FROM THE HOOGHLY ESTUARINE SYSTEM


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Authors

  • D K De Central Inland Capture Fisheries Research Institute, Barrackpore, 743 101, India
  • N C Datta Central Inland Capture Fisheries Research Institute, Barrackpore, 743 101, India

Abstract

The age and growth of Indian shad, Tenualosa ilisha (Hamilton) commonly known as hilsa, of the
freshwater zone of Hooghly estuary were studied by using the length- frequency method. The average
sizes attained by hilsa were found to be 18.9, 27.7,35.1, 41.3, 46.6 and 51.1 an at the end of 1 to 6 years
respectively. The von Bertalanffy growth equation for this species was estimated as
L, = 75.13 [1-eO""3 M*"» ]
The length -weight relationships of hilsa were also studied based on the specimens measuring 20-552 mm
in length. The results of the analysis of covariance showed that there was significant difference with
regard to regression coefficients between the sexes and therefore separate equations were obtained for
male:
Log W = -4.6821 + 2.9066 Log L and for
Female : Log W = - 4.4080 + 2.8083 Log L.
The relative condition 'Kn' at different lengths (180-552 mm) of fish and during different months of the
year was estimated. The first low value of 'Kn' around 345 mm size group was found to be the lowest
and this size range might be associated with the first spawning in the life of the fish. The significance
in the fluctuation in 'Kn' values was discussed.

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Author Biographies

  • D K De, Central Inland Capture Fisheries Research Institute, Barrackpore, 743 101, India
    Central Inland Capture Fisheries Research Institute, Barrackpore, 743 101, India
  • N C Datta, Central Inland Capture Fisheries Research Institute, Barrackpore, 743 101, India
    Central Inland Capture Fisheries Research Institute, Barrackpore, 743 101, India

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Issue

Vol. 37 No. 2 (1990)

Section

Articles

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The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

De, D. K., & Datta, N. C. (2011). AGE, GROWTH, LENGTH-WEIGHT RELATIONSHIP AND RELATIVE CONDITION IN HILSA, TENUALOSA ILISHA (HAMILTON) FROM THE HOOGHLY ESTUARINE SYSTEM. Indian Journal of Fisheries, 37(2), 199-200. https://epubs.icar.org.in/index.php/IJF/article/view/10471