查询词典 insect vector

The larvae of Corcyra cephalonica, Musca domestica, Spodoptera litura and Spodoptera exigu which could be easily reared on large scale, were used to feed Myrmeleon sagax larvae, and the effect of these four insect diets on development, food digestion and utilization of antlion was studied.

选择4种可规模化饲养的昆虫--米蛾 Corcyra cephalonica 、家蝇 Musca domestica 、斜纹夜蛾 Spodoptera litura 、甜菜夜蛾Spodoptera exigu幼虫来饲养穴蚁蛉 Myrmeleon sagax幼虫，研究这4种饵料对蚁狮生长发育及消化利用的影响。

Trichogramma showed high control efficacy on cotton bollworm eggs after three times of release both in the second and in the third generation bollworm periods. The parasitism on the second and third generation bollworm eggs were 66.0%-70.7% and 76.0%-81.2%, respectively, which were significantly higher than that in the control (second generation: 7.0%-12.3%, third generation: 5.2%-7.4%). And the injury rate of cotton buds and bolls in the second and third generation bollworm were 2.2% and 3.1%, respectively, which were significantly lower than that in the control (second generation:8.5%, third generation: 20.9%). In the second generation bollworm period, number of bollworm eggs or larvae in the Trichogramma released cotton field did not differ to that in the chemically controlled field. But in the third generation, there were significantly less bollworm eggs and larvae in the Trichogramma released cotton field. There were more predators in the Trichogramma released cotton field. These results indicated that cotton boll worm in the transgenic insect-resistant cotton field can he effectively controlled by mass-releasing of T.

结果发现：棉铃虫卵在棉株不同部位的分布差异较大，2代棉铃虫卵主要分布在叶正面、叶背面和茎尖，3代棉铃虫卵主要分布于蕾铃；在放蜂田，赤眼蜂对棉株不同部位棉铃虫卵的寄生率差异较大，2，3代棉铃虫时期对叶正面、叫背面、茎尖、蕾铃的棉铃虫卵寄生率均较高，对叶柄和茎杆处卵的寄生率较低；并以3代棉铃虫时期的寄生率较高；在2，3代棉铃虫时期分别连续释放3次赤眼蜂，对棉铃虫具有很强控制作用，2，3代棉铃虫卵的被寄生率分别为66.0%~70.7%和76.0%~81.2%，均显著高于化防田的自然寄生率（2代：7.0%~12.3%，3代：5.2%~7.4%）；蕾铃被害率分别为2.2%和3.1%，均显著低于化防田（2代：8.5%，3代：20.9%；2代棉铃虫时期，放蜂田和化防田的棉铃虫卵量和幼虫数量差异均不显著，但3代棉铃虫以后，放蜂田棉铃虫卵量和幼虫数量均显著低于化防田，且放蜂田的捕食性天敌数量显著高于化防田。

African courser that feeds on insect parasites on crocodiles.

以寄生在鳄鱼身上昆虫为食的非洲走鸻。

Typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae.

典型的晨昏或夜间活动的昆虫，身体短胖，触角柔软如发。

For example, genes conferring some types of herbicide tolerance or insect resistance do not exist in plants that will crossbreed with corn.

例如能与玉米杂交的植物中，就没有抗除草剂或抗虫的基因。

In different kinds of crucifer vegetable fields the insect communities were different.

不同蔬菜种类田节肢动物群落的多样性指数、均匀性指数及优势集中性指数有所差异。

Diadegma semiclausum Hellen (Hymenoptera: Ichneumonidae ) is one of major larval parasitoids of the diamondback moth, Plutella xylostella Linnaeus, an important insect pest of crucifer vegetable crops.

半闭弯尾姬蜂Diadegma semiclausum Hellen是十字花科蔬菜重要害虫-小菜蛾Plutella xylostella Linnaeus幼虫期的主要寄生性天敌昆虫之一。

Juveniles eat crustacean and insect larvae, shrimp, and other small invertebrates.

青少年吃甲壳及昆虫幼虫、虾，其他小的无脊椎动物。

They eat insect larvae, crustaceans, and other fish.

吃昆虫幼虫、甲壳类动物和其他的鱼类。

Objective: To study effects of different induction conditions on production of insect cuticle degrading protease from Pythium guiyangense Su.

目的：了解不同诱导条件对贵阳腐霉产生昆虫表皮降解酶的影响。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。