竹缺爪螨种群空间格局及时序动态

Spatial pattern and time series dynamics in the population of Aponychus corpuzae

采用聚集度指标法测定竹缺爪螨 (Aponychuscorpuzae)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 41 43% ) ,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 ,1 0a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

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.