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      Permanent link:
      https://www.ias.ac.in/article/fulltext/anml/088/05/0311-0323

    • Keywords

       

      Genealogy; inbreeding coefficient; linear regression; litter size; mortality rate; white tigers

    • Abstract

       

      One of the problems of breeding of endangered species in captivity is inbreeding. An exemplary illustration is the inbreeding in the white tigers of Rewa. Genealogies and other relevant information on white tigers were collected from four Zoological Parks to investigate whether matings between close relatives were responsible for the reduction in litter size and increase in early mortality which has been observed. Inbreeding coefficients were calculated for different types of mating. It was generally found that tigers failed to survive, if their inbreeding coefficient attained a level of 0·4687 or higher. Regression analysis reveals a tendency for the average litter size to decrease and the early mortality rate to increase with an increase in the value of the inbreeding coefficient.

    • Author Affiliations

       

      A K Roychoudhury1 K S Sankhala2

      1. Bose Institute, Calcutta - 700 009
      2. Department of Agriculture, Government of India, New Delhi
    • Dates

       
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