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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2013 Vol.32 No.4

Demography and Genetics of Captive Grus leucogeranus Population in Chinese Zoos
Author of the article:ZHOU Junying
Author's Workplace:(Chinese Association of Zoological Gardens, Beijing 100037, China)
Key Words:  Grus leucogeranus; Chinese zoos; captive population; captive breeding; genetic management
Abstract:

According to the 2012 Chinese regional studbook of Siberian crane (Grus leucogeranus), population management software SPARKS v1.6 and PMx v1.0 were used to make a demographic and genetic analysis of the captive population of Siberian crane in Chinese zoos. The results showed that the Siberian crane population is facing many difficulties, for example: high proportion of sex unknown individuals (by the end of October 31, 2012, there are 24 male, 29 female and 39 sex unknown Siberian cranes in Chinese zoos); unreasonable age structure (although there are sufficient number of breeding age individuals, only 15.22% juveniles of the total); quickly decreased gene diversity (63.04% individuals are wild caught, only seven act as actual founders which are involved in the reproduction. The mean kinship (MK) of descendants of some founders is 0.15, thus the existing population only retained 85.25% gene diversity of wild individuals); weak population growth (average population growth rate during 2006 to 2012 is 0.98). Therefore, in order to build a healthy captive Siberian crane population, sex identification should be carried out as soon as possible, and breeding environment condition should be improved to reduce wound caused deaths. In the meantime, a variety of techniques (such as artificial insemination) should be conducted to explore more potential founders and reduce the breeding opportunities of close relative.

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