极地研究

极地研究 ›› 1994, Vol. 6 ›› Issue (1): 28-37.

• 目次 • 上一篇    下一篇

南极中山站附近麦氏贼鸥雏鸟生长及其影响因素

王自磐   

  • 出版日期:1994-03-30 发布日期:1994-03-30

THE GROWTH OF CHICK IN THE SOUTH POLAR SKUA AND SOME FACTORS INFLUENCING IT NEAR THE ZHONGSHAN STATION ,EAST ANTARCTICA

  • Online:1994-03-30 Published:1994-03-30

PDF (PC)

964

被引次数

4

摘要：

在１９８９／１９９０年度南极夏季，对中山站附近麦氏贼鸥雏鸟的生长进行了观察和研究。本区麦氏贼鸥育雏期大约在每年１２月中旬至翌年２月下旬，雏鸟的成活率较低，本年度为３８．９％，从出雏到育成（首飞日），育期平均５３．２天（范围５２－５５天）。雏鸟平均体重日增长率，第一雏鸟为２７．４２ｇ／ｄ，第二雏鸟为１６．５６ｇ／ｄ。雏鸟生长的逻辑斯蒂克曲线数学方程式为：Ｗ＝１２５５．４１＋２２．６０３４ｅ－０．１５１８ｔ（第一雏鸟）生长曲线渐近线为１２５５．４ｇ，拐点为２０．５ｄ，第一雏鸟体重的最大日增率ｘ＝４３．９４±８．２４（ｇ）。影响本区麦氏贼鸥雏鸟生长和成活率的主要外部因子是天气（如暴风雪）同类自残以及食物等

关键词: 麦氏贼鸥,雏鸟,生长,南极

Abstract:

The growth of chicks of South Polar skua Catharacta maccormicki near the Zhongshan Station was observed in 1989/1990 austral summer. The breeding period was going through from mid-December to mid-February next year.The survival rate of chicks was very lower and it was 38.9% in this study season.For about 53.2 days (range 52-55 days) breeding ,the chicks grew up and were able to fly,the average daily growth rate was 27.42g/d and 16.56g/d with first and second chicks respectively.The logistic curve was fitted to the weight data for typical growth.The equation is: W=1255.41+22.6034e -0.1518t The important factors influencing chick's growth and mortality were discussed in this paper.They are food,unfavourable weather and predation by adult skuas.