竹缺爪螨种群空间格局及时序动态

采用聚集度指标法测定竹缺爪螨（Aponychus corpuzae)空间格局并分析其时序动态，结果表明：竹缺爪螨卵及卵壳在林间呈聚集分布，主要分布在3年生以上竹（受害株率为97．4143％），2年生以下竹分布株率仅占0．8571％，这说明该螨主要危害3年生以上竹，且以聚集为危害为主。卵和幼螨群体在年周期中均呈聚集分布，其聚集程度对若和成螨具跟随效应。若虫和成螨存在明显的聚集－扩散周期，10a中大多数时期呈聚集分布，少数时期呈均匀分布或Poisson分布。这与该螨生物学特性及气候、营养条件密切相关。图1表2参8

Spatial pattern and timeseries dynamics in the population of Aponychus corpuzae

By means of several sorts of indexes of aggregation，the spatial distribution pattern of Aponychus corpuzae was measured．The results indicated：the egg's and their crusts' spatial pattern were of an aggregation distribution in the bamboo forest，and they distributed mainly on the leaves of over 3-age bamboos and only 0.857 1% on the leaves of under 2-age bamboos；it showed that the mites harmed mainly over 3-age bamboos；the eggs and larvae mere of an aggregation distribution in a year but had different degree of aggregation which followed the nymphs and adults；The nymphs and adults had clear aggregation-spread circulation in year．which were of an aggregation distribution in long term and of an ayerage or Poisson distribution in short term；it was relationship with the biology of the mites，climate and food；in the last，the applications of study results on the control of the mites were discussed．