Age, growth and harvestable size of Labeo rohita (Ham.) from the lake Jaisamand, Rajasthan, India


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Authors

  • Shalendra Singh Department of Limnology and Fisheries, Rajasthan Agricultural University, University New Campus, Udaipur — 313 001, India
  • L L Sharma Department of Limnology and Fisheries, Rajasthan Agricultural University, University New Campus, Udaipur — 313 001, India
  • V P Saini Department of Limnology and Fisheries, Rajasthan Agricultural University, University New Campus, Udaipur — 313 001, India

Abstract

Age, growth and harvestable size of Labeo rohita (Ham.) from Lake Jaisamand (Dist. Udaipur) were determined with the use of key scales. Six annual rings or annuli were used to estimate selected growth parameters i.e. annual length increase (h), annual increase in weight (w), index of species average size (Qh), index of population weight growth intensity (QCW), specific growth rate (CI), specific rate of weight increase (Cw), growth constant (Clt) and growth characterisitc (Cth). These growth parameters indicated higher values of QCW (52.60 g) and Qh (10.18 cm). The W was found to increase upto fifth year of life, while Cth increased only upto third year and declined thereafter. Similarly, the Clt and average Clt observed during the initial phase of life i.e. upto second year were comparatively more than the last phase i.e. fifth to seventh year. On the basis of growth parameters the harvestable size of 46 cm has been calculated for Labeo rohita of Lake Jaisamand

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Author Biographies

  • Shalendra Singh, Department of Limnology and Fisheries, Rajasthan Agricultural University, University New Campus, Udaipur — 313 001, India
    Department of Limnology and Fisheries,
    Rajasthan Agricultural University,
    University New Campus, Udaipur — 313 001, India
  • L L Sharma, Department of Limnology and Fisheries, Rajasthan Agricultural University, University New Campus, Udaipur — 313 001, India
    Department of Limnology and Fisheries,
    Rajasthan Agricultural University,
    University New Campus, Udaipur — 313 001, India
  • V P Saini, Department of Limnology and Fisheries, Rajasthan Agricultural University, University New Campus, Udaipur — 313 001, India
    Department of Limnology and Fisheries,
    Rajasthan Agricultural University,
    University New Campus, Udaipur — 313 001, India

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Issue

Vol. 45 No. 2 (1998)

Section

Articles

License

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

Singh, S., Sharma, L. L., & Saini, V. P. (2011). Age, growth and harvestable size of Labeo rohita (Ham.) from the lake Jaisamand, Rajasthan, India. Indian Journal of Fisheries, 45(2), 169-175. https://epubs.icar.org.in/index.php/IJF/article/view/8740