摘要
对白蜡虫危害极严重的寄生蜂——白蜡虫花翅跳小蜂幼虫的空间分布型及种群动态进行了研究，认为其分布为聚集分布，可以用负二项分布、Ｎｅｙｍａｎ分布和Ｐｏｉｓｓｏｎ－二项式分布来拟合，用Ｉｗａｏ的平均拥挤度（ｍ）与平均密度（Ｘ）的直线回归法做了拟合，得出ｍ＝０．２７＋１．２１Ｘ，改进的Ｉｗａｏ模型为ｍ＝０．１５＋０．１６Ｘ＋１．５７Ｘ￣２，同时给出其属于负二项分布的理论抽样数及序贯抽样公式。用模糊聚类法将其动态分为４个状态集（亚系统）．并以平均密度为指标给出其种群在寄生于雌蜡虫体内的增长曲线．
This paper deals with the spatial distribution dynamics ofMicrotery ericeri Ishii which is an important parasitic bee of white wax scale . The results indicate their spatial distribution is aggregate and can be repretsented by the negative binomial , Neyman andPoisson-binomial series. Its lwao' s Formula based on relation of mean crowing(m)to mean density (m)is(m)=0.27+1.21m. Improved IWao's Formula is( m)=0.15+ 0.16m+1.57m￣2。Theoretical sampling numbers when the population is negative binomally distributed and sequentialsampling formula is proposed. This authors also analyzes population dynamica. of Microterys ericeri Ishii by means of fuzzyclastering which devided the population dynamics to 4 subsystems.Agrowth curve used time ashorizontal axis and mean density as longitudinal axis is proposed ,too.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
1995年第2期200-206,共7页
Journal of Sichuan University(Natural Science Edition)
关键词
白蜡虫花翅
跳小蜂
空间分布型
种群动态
Microterys ericeri Ishii ,spatial distribution pattern , population dynamics ,fuzzyclastering
