虫粪

林间驱避试验结果说明，幼虫虫粪的己烷提取物处理过的树干上的刻槽数明显少于对照树干上的刻槽数，二者具有极显著差异；

Field tests showed that females gnawed significantly fewer oviposition scars on Pinus massoniana trees treated with hexane extracts of larval frass than on the control trees .

天牛幼虫排出的虫粪所释放的挥发性物质成为天敌搜寻天牛所在微栖境的重要化学信息物质。

Frass of longhorned beetle larvae plays an important role in natural enemies searching for their cerambycid hosts .

幼虫孵化的同时直接从卵壳贴近树皮的一侧蛀入韧皮部，同时将大量虫粪排入卵壳；

During hatching , the larva bored directly into phloem from the bottom part of the egg adhered to the bark with sawdust_like dejecta in the chorion .

其次为贾第虫和粪类圆线虫、其感染率分别为8.2%和2.6%。

Infection rates of Giardia lamblia and Strongyloides stercoralis were low , being 8.2 % and 2.6 % , respectively .

绵羊胃肠道线虫荷虫量与粪检虫卵相关性研究

Studies of relativity of the EPG and worm count of nematodes in sheep faeces and gastro-intestine

随着饲喂铃含氮量的增长，6龄幼虫虫体和虫粪以及雌蛹的全氮含量均有所升高。

With increasing boll N contents the total N contents of the 6th instar larvae together with their faeces , as well as the female pupae were raised gradually .