标题：Distribution of Cocoa Pod Borer (CPB) Conopomarpha cramerella (Snellen) (Lepidoptera: Gracillariidae) Egg Population with Respect to the Pod Phenology
期刊名称：Pertanika Journal of Social Sciences & Humanities
印刷版ISSN：0128-7702
电子版ISSN：2231-8534
出版年度：2005
卷号：28
期号：1
出版社：Universiti Putra Malaysia
摘要：At the Malaysian Cocoa Board Research Station at Hilir Perak, Sg. Sumun, Perak, an in-depth investigation on sampling of the cocoa pod borer (CPB) was conducted over a period of 12 months from 2000 to 2001. Several components were examined including determining distribution of CPB with respect to pod phenology and determining optimum sample size to produce sampling parameters for CPB using three different sampling techniques, random, systematic and stratified. Data were analysed using two aggregation models; Taylor's Power Law (b coefficient) and Iwao's mean crowding (ß coefficient). CPB's egg were found to be highly aggregated. In determining optimum sample sizes, two parameters were calculated; b coefficient of Green’s model and ß coefficient for Kuno's model. The Green model was suitable to produce the most efficient sampling sizes during low and high population densities for all sampling techniques.
关键词：Conopomarpha cramerella; egg population; pod phenology
