幼虫的

The values of AFC50(media antifeeding concentration)at 24h on the 3rd instar larvae of Ostrinia furnacalis was 3408.31μg/ml, according to 2275.22μg/ml of media azedarach.

结果表明：蟛蜞菊4个不同部位中，以花的甲醇提取物拒食效果最好，24h对亚洲玉米螟3龄幼虫的AFC50为3392.28μg/ml，对照印楝为2228.72μg/ml。

The hole in which the botfly maggot has carved itself in the host's tissue serves as a breathing passage for the larva.

马蝇蛆自己在寄主身体组织上挖出的小洞是幼虫的呼吸通道。

Instead, it secretes a glue and uses this to stick bits of sand together to form its casing, in the way that a freshwater caddis fly larva does.

相反，它分泌胶质后，使用它与沙子一起构建自己的壳，与淡水石蛾幼虫的构建方式相同。

Furthermore, the effect of temperature and contact time on toxicity of chlorine dioxide was observed.

以水厂原水为试验水样，研究了二氧化氯对摇蚊不同龄期幼虫的毒性效果（24 h），并考察了温度和接触时间对二氧化氯毒性效果的影响。

The results showed Agri-Terra (the dosage of application 1.0%~3.0% at 40mL per plant) was extremely effective against Meloidogyne incognita infection to cucumber. It significantly reduced cucumber root gall index and the number of second stage larvae in soil.

结果表明，Agri-Terra能减少南方根结线虫对黄瓜的侵染，显著地降低黄瓜根结指数和土壤中二龄幼虫的数量。

Objective To delay the occurrence and development of resistance of mosquito to chemical insecticides,the efficacy of Propoxur mixed with synergists against Culex pipiens pallens larvae collected fromTengzhoucity,Tai'an city and Tangkou township of Jining City in Shandong province,was observed.

目的 观察残杀威与增效剂复配对山东省不同地区现场淡色库蚊幼虫的杀虫效果，保护和有效使用杀虫剂提供科学依据方法采用WHO生物测试法。

Objective To delay the occurrence and development of resistance of mosquito to chemical insecticides,the efficacy of Propoxur mixed with synergists against Culex pipiens pallens larvae collected fromTengzhoucity,Tai'an city and Tangkou township of Jining City in Shandong province,was observed.

目的 观察残杀威与增效剂复配对山东省不同地区现场淡色库蚊幼虫的杀虫效果，为保护和有效使用杀虫剂提供科学依据。方法采用WHO生物测试法。

The biological activity of fenoxicarb on tobacco beetle larvae was with dropping method,and the control effect was experimented in laboratory and store house.

采用点滴法测定了&双氧威&对烟草甲幼虫的生物活性，同时进行了室内防治试验和实仓防治试验。

Zoology A worker ant or bee that feeds and cares for the colony's young.

工蚁，工蜂：喂养和照料共生蚁群或共生蜂群幼虫的工蚁或工蜂

In March, the Brazilian state of Sao Paulo State University of Campinas, the use of transfer RNA methods, inactivated Schistosoma mansoni larvae pathogenic core gene, thereby reducing the harm of schistosomiasis.

3月，巴西圣保罗州坎皮纳斯州立大学运用转移核糖核酸方法，灭活曼氏血吸虫致病幼虫的核心基因，从而降低血吸虫病害。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。