幼虫的

The spatial patterns of the larvae in the plantation were conformed to negative binomial distribution.

坡位、坡向、树种和树冠方位对幼虫的分布有显著影响。

Two silkworm cDNA libraries were constructed from testes and ovaries of the silkworm Bombyx mori, respectively.

分别以5龄幼虫的精巢和卵巢构建了2个家蚕cDNA文库。

The defoliation was related to thelarvae density and the length of larva.

去叶与昆虫幼虫的密度以及长度显著相关。

From the late stage of third instar till fifth day of fifth instar, it is interesting to note that THC increased shortly before and after ecdysis and thereafter decreased to a basal level.

从三龄末期到五龄第五天期间，亚洲玉米螟幼虫的THC在蜕皮前后会下降，蜕皮后12小时左右降到最低点然后慢慢回升。

From the late stage of 3rd instar till the 5th day of 5th instar, THC increased shortly before and after ecdysis and thereafter decreased to a basal level.

从三龄末期到五龄第五天期间，幼虫的THC在蜕皮前后会下降，蜕皮后约12h降到最低点，然后又慢慢回升。

Any of various small livebearers of the genus Gambusia that ''.'feed'.'' on mosquito larvae and are often used in mosquito ''.

食蚊鱼一种食蚊鱼属主食蚊幼虫的卵生鱼，常被用于''。

The Veliger larvae of Crassostrea gigas swan regularly in the water column under the ambient pressure, either in a vertically orientated lineal or spiral pathway.

在正常大气压下，太平洋牡蛎面盘幼虫的游泳较为舒缓，压力提高时，表现为快速的直线运动或螺径小而螺距大的螺旋运动，并出现更频繁的下沉行为，表明幼虫的紧张度已提高。

The limbless没有肢体的 aquatic 在水中生活的larva 幼虫of a frog or toad, having gills and a long flat tail.

蝌蚪：一只青蛙或蟾蜍的没有肢体的在水中生活的幼虫，生有鳃和一条长而扁平的尾巴。

Our previous studies have shown that ubiquitous overexpression of HmgD caused hemocytes proliferation and the formation of melanotic tumors in the Drosophila larvae. To clarify the mechanism of melanotic tumors appearance,we also generated RT-PCR analysis to test the transcriptional changes of PPAE and Spn27A,which encode the key factors in the phenoloxidasecascade pathway from larvae samples of mid-third instar,late-third instar and prior to pupation relative to wild type flies.Our result showed that in the HmgD overexpression mid-third instar larvae,the expression level.of Spn27A was lower than wild type,otherwise the expression level of PPAE was higher than wild type.It suggests that overexpression of HmgD affects the PO cascade pathway.

本研究组前期工作发现，过量表达HmgD引起果蝇幼虫体内血细胞增生，并出现黑色素瘤，为探讨HmgD过量表达导致了血细胞增生即形成黑色素瘤的分子机制，本研究分别提取三龄中期、后期和相对于野生型化蛹前时刻的幼虫的RNA，首先检测了编码酚氧化酶级联反应途径中的两个关键基因PPAE，Spn27A在突变体中的转录发生变化，结果发现，Spn27A在三龄中期的表达量低于野生型，而PPAE的表达高于野生型，表明过量表达HmgD影响了酚氧化酶级联反应途径，低水平的Spn27A不足以抑制PPAE的活性，活化的PPAE催化了PPO的活性，使其转变成有活性的PO，从而促进黑色素的生成，使果蝇体内产生黑色素瘤。

Temperature showed significant effect on the toxicity of avermectin to the second instar larva of Plutella xylostella.The toxicity become greater as temperature ranged from 15 -~-- 32 C .

温度对阿维菌素的毒力有较大的影响，在15～32℃温度范围内，阿维菌素对小菜蛾幼虫的毒力随着温度的升高而增强，温度从15℃上升到32℃，阿维菌素对小菜蛾幼虫的毒力增加了32.35倍。

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。