Non-linear statistical models on estimation of maximum size of Tor putitora (Hamilton) in different aquatic environments


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Authors

  • N Okendro Singh Directorate of Coldwater Fisheries Research, Bhimtal - 263 136, Nainital, Uttarakhand, India
  • C B Joshi Directorate of Coldwater Fisheries Research, Bhimtal - 263 136, Nainital, Uttarakhand, India
  • A K Paul Indian Agricultural Statistics Research Institute, Library Avenue, Pusa Campus, New Delhi - 110 012, India

Abstract

Tor putitora is one of the most important coldwater fish species. The population of this fish species has declined sharply in
the recent past and is threatened with multifaceted dangers. As the size of fish plays an important role in fish stock
assessment, in the present investigation, an attempt has been made to estimate the maximum size of Tor putitora in
different aquatic environments by using nonlinear statistical models. We can expect a maximum length of approximately
3097 mm and 2994 mm for Tor putitora in the aquatic environments of Kumaun lakes and Gobindsagar reservoir respectively.
It is seen that the estimated maximum size of Tor putitora in both environments are well acceptable in view of the
reported maximum sizes in India and abroad.

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Author Biographies

  • N Okendro Singh, Directorate of Coldwater Fisheries Research, Bhimtal - 263 136, Nainital, Uttarakhand, India
    Directorate of Coldwater Fisheries Research, Bhimtal - 263 136, Nainital, Uttarakhand, India
  • C B Joshi, Directorate of Coldwater Fisheries Research, Bhimtal - 263 136, Nainital, Uttarakhand, India
    Directorate of Coldwater Fisheries Research, Bhimtal - 263 136, Nainital, Uttarakhand, India
  • A K Paul, Indian Agricultural Statistics Research Institute, Library Avenue, Pusa Campus, New Delhi - 110 012, India
    Indian Agricultural Statistics Research Institute, Library Avenue,
    Pusa Campus, New Delhi - 110 012, India

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Issue

Vol. 56 No. 2 (2009)

Section

Articles

License

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How to Cite

Singh, N. O., Joshi, C. B., & Paul, A. K. (2011). Non-linear statistical models on estimation of maximum size of Tor putitora (Hamilton) in different aquatic environments. Indian Journal of Fisheries, 56(2), 103-106. https://epubs.icar.org.in/index.php/IJF/article/view/6831