Prediction of cumulative inbreeding rates in Indian major carps in Gujarat state hatcheries


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Authors

  • P K Deepak Central Institute of Fisheries Education, Versova, Mumbai-61
  • Shrinivas Jahageerdar Central Institute of Fisheries Education, Versova, Mumbai-61
  • M K Sharada CSIR Centre for Mathematical Modelling And Computer Simulations, NAL Belur Campus, Bangalore
  • N K Indira CSIR Centre for Mathematical Modelling And Computer Simulations, NAL Belur Campus, Bangalore

Abstract

State owned hatcheries mainly breed catla, rohu and mrigal and are the main suppliers of fish seed to the farmers of Gujarat. The present practice of brood stock management is devoid of genetic considerations and this has led to stocks being isolated and genetically closed. In genetically isolated stocks with small
effective population size, inbreeding accumulates at a faster rate. In the present study, effective population size and cumulative inbreeding rates were estimated. The cumulative inbreeding rate ranged from 0.42 to 1.63, 3.18 to 5.91 and 0.73 to 1.71 per cent for catla, mrigal and rohu respectively. To estimate the inbreeding rates in future generations, predictive models were developed using linear regression, polynomial and power equations and it was found that linear regression models are efficient to predict the cumulative inbreeding rate.

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Author Biographies

  • P K Deepak, Central Institute of Fisheries Education, Versova, Mumbai-61
    Central Institute of Fisheries Education, Versova, Mumbai-61
  • Shrinivas Jahageerdar, Central Institute of Fisheries Education, Versova, Mumbai-61
    Central Institute of Fisheries Education, Versova, Mumbai-61
  • M K Sharada, CSIR Centre for Mathematical Modelling And Computer Simulations, NAL Belur Campus, Bangalore
    CSIR Centre for Mathematical Modelling And Computer Simulations,
    NAL Belur Campus, Bangalore
  • N K Indira, CSIR Centre for Mathematical Modelling And Computer Simulations, NAL Belur Campus, Bangalore
    CSIR Centre for Mathematical Modelling And Computer Simulations,
    NAL Belur Campus, Bangalore

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Issue

Vol. 52 No. 4 (2005)

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

Deepak, P. K., Jahageerdar, S., Sharada, M. K., & Indira, N. K. (2011). Prediction of cumulative inbreeding rates in Indian major carps in Gujarat state hatcheries. Indian Journal of Fisheries, 52(4), 441-450. https://epubs.icar.org.in/index.php/IJF/article/view/7109