Volume 11 Issue 4
Jul.  1990
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ZHANG Jun-ping, ZHENG Guang-mei. The Studies of the Population Number and Structure of Cabot's Tragopan (Tragopan caboti). Zoological Research, 1990, 11(4): 291-297.
Citation: ZHANG Jun-ping, ZHENG Guang-mei. The Studies of the Population Number and Structure of Cabot's Tragopan (Tragopan caboti). Zoological Research, 1990, 11(4): 291-297.

The Studies of the Population Number and Structure of Cabot's Tragopan (Tragopan caboti)

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1990-11-22
  • The population number,seasonal flunctuation,the sexual ratio and the age structure of Tragopan caboti were analized based on the data obtained from 1983 to 1986 in Wu Yan Ling Reserve,Zhejiang Province.The mapping method and the line transect were used in the census.It is conclused that the number of wild Tragopan caboti are about 50 in winter in Wu Yan Ling Reserve.The sexes and ages of the population of Cabots Tragopan are different:female is about 49.23%,male 50.68%,adult 98.49% and young 21.15%.The proportions of the young birds are related to the sexual ratio of adults in the specific samples in some way.The clutch size is 3.5,hatching ratio are very low,but the loss ratio of eggs are incredible high in breeding season.The Tragopan cabotis population had obvious seasonal fluctuation in Wu Yan Ling Reserve.The population number is the lowest in winter,the highest in later breeding season.The main reason for fluctuation may be the hatching and the death of the young birds.It is suggest that the key to prevent the Tragopan caboti from extinction is to ensure the hatching ratio and the survival rate of young birds in the wild.
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