马尾松毛虫幼虫的捕食天敌及其捕食作用的研究

根据林间调查和室内观察资料，分析了江西省万年县不同松林中马尾松毛虫不同发生代别低龄幼虫期的主要捕食天敌种类及数量。结果表明低龄幼虫期捕食无敌有13科31种，其中以蜘蛛类最多，其次为蚂蚁类。不同林型中捕食天敌的种类和数量在年份间代别间均存在一定差异，数量差异尤其显著。在室内研究了几种主要捕食无敌对马尾松毛虫低龄幼虫的捕食作用及其功能反应，结果表明功能反应为S型，由此建立了它们的功能反应模型。

Predators of larvae of Dendrolimus punctatus (Walker) and their predation

The species and the number of predators of Dendrolimus punctatus (Walker) larvae were investigatedin vallous pine forest type in Wannian County, Jiasexi Province of China according to field data and laboratoryobservation. The results showed that there are 13 families, belonging to 31 species, of which the spider numberis the largest, and the second is at There existed difference on the species and number of predators in differentyears and generations in the various forest types, especially the number. The predation of the major predators tothe eedy stage larvae was observed. Their funhonal fesponses to masson pine caterpillar larvae were studied, thecurves of responses indicated Holling Ⅲ (S-shape) type. The functional response medels were fided by S-shapedcurves.