摘要
用模糊聚类法定量研究了青海湖裸鲤的生活史类型,以平衡产量模式进行了验证,并用世代生物量法探讨了其合理捕捞强度与捕捞年龄.结果表明:青海湖裸鲤属比较典型的k-选择类型鱼类;青海湖裸鲤平衡产量曲线与达氏鳇的平衡产量曲线非常相似;青海湖裸鲤的临界年龄为15.67龄,整个世代生物量在11～16龄达到最大;建议对青海湖裸鲤进行捕捞的最小捕捞年龄为12龄,捕捞强度不超过0.1.
The life history pattern of Crymnocypris przwalskii przewalskii （Kessler） was studied by fuzzy pattern recognition and tested by Beventon-Holt equilibrium yield model. The reasonable fishing mortality rate and minimum catchable age are also discussed in this paper. The results indicated that the life history pattern of G.przwalsikk Drzewalskii （Kessler） belonged to k-selection. Analysis of yield curve also demonstrated that its life history pattern belonged to k-selection. The “critical age” of the fish was about at the age of 15.67 and the relative biomass reached the maximum at the age of from 11 to 16. For protecting the resource, the fishing mortality rate should not be higher than 0.1 and the minimum catchable age should not be lower than 12.
出处
《四川动物》
CSCD
北大核心
2005年第4期455-458,共4页
Sichuan Journal of Zoology
基金
武汉工业学院博士启动基金(04297-03396)
关键词
青海湖裸鲤
生活史类型
模糊聚类分析
平衡产量模式
Gymnocypris przwalskii przewalskii （Kessler）
life history pattern
fuzzy pattern recognition
Beventon-Holt equilibrium yield model
