这些是重要的农业害虫，且常以难以确认的幼虫和卵的方式出没于乡间的水果上。
These are important agricultural pests and often arrive in the country as hard-to-identify larvae, or eggs, on fruit.
当欧洲的瓢虫吃小丑瓢虫的卵和幼虫的同时，也吃掉了微孢子虫。
When European ladybug species eat the harlequin ladybird eggs and larvae, they also consume the microsporidia.
暗礁也作为一个筑巢地给鱼类卵和幼虫，最终填充鱼类栖息地。
A reef also serves as a nesting ground for fish eggs and larvae that eventually populate fish habitats.
不幸的是， 95 ％的跳蚤由跳蚤卵、幼虫和蛹组成。
Unfortunately, 95% of a flea population consists of eggs, larvae and pupae .
结果表明，卵期、1龄幼虫期、蛹期的死亡率较大，分别为13 5 %、18 2 %和19 0 % ，是影响种群数量增长的主要因子。
It was showed that high mortalities in the stages of egg(13 5%), 1st instar larvae(18 2%)and pupae(19 0%) were the main factors influencing the growth of the experimental population.
本文报道了青蛤受精卵密度对孵化的影响和青蛤幼虫培养密度对生长的影响。
The paper deals with the effect of fertilized eggs density and the larvae culturing density on the hatching and growth of clam, Cyclina sinensis .
测定了不同温度下莲雾毒蛾各虫态的存活状况，并就卵孵化率、幼虫存活率、蛹羽化率、产卵量和种群趋势指数等指标与温度的关系进行相关性分析。
The regression equations of the rates of hatching, larvae survival, emergence, the egg number laid by a female and population trend indices against temperatures were analyzed.
通过利用传统生物学统计方法和地统计学方法，得出其卵、幼虫和蛹的空间格局均为负二项分布，即聚集分布。
The spatial pattern of egg, larva and pupa are all the aggregated distribution by analysis with the traditional biostatistics and geo-statistics.
很多种类的蚂蚁都能够将卵和小幼虫紧密地排列成束并放置在巢穴孵化区的中心，而最大的幼虫位于孵化束的外围。
Many kinds of ants can closely arrange eggs and larvae in a sheaf around the middle of nest area, and the biggest larvae located at the edge of area.
世代分化现象，测定了卵期、幼虫和蛹期及全世代的发育起点温度和有效积温。
The generation differentiation and the development initial temperatures and effective accumulated temperatures for egg, larva and pupa and whole generation of A.
卵放在木段外，卵期缩短为13 ~15天，平均孵化率及初孵幼虫对光肩星天牛幼虫的平均寄生率均有所提高，分别为83.3%和87.5%。
When eggs placed out of the wood block, egg stage is 13 ~ 15days, average hatching rate and average parasite rate are increased, they are 83.3% and 87.5% respectively.
丙酮和石油醚提取物对小菜蛾卵的孵化及卵的发育历期没有影响，但有增加初孵幼虫死亡率的作用。
The extracts of acetone and petroleum ether had no effect to the hatching rate and egg development duration, but they were toxic to the newly hatched larvae of Plutella xylostella.
广赤眼蜂、涓夜蛾绒茧蜂、广大腿小蜂分别为卵期、幼虫期和蛹期的天敌优势种，其最高寄生率分别为30 %、80 %和65 %。
Among them, Trichogramma evanescens, Apanteles sp. and Brachymeria obscurata were dominant species with the highest parasitizations of 30%, 80% and 65% respectively.
卵、幼虫和蛹的发育历期均长于敏感品系且差异显著；
The developmental duration of eggs, larvae and pupae were longer than that of susceptible strain and the difference was significant.
如果黄蜂在一个寄主卵中产卵过多，黄蜂幼虫会因为营养和空间不够而产生竞争导致死亡。
If they laid too many eggs in a host egg, the developing wasp larvae would compete with each other to the death for nutrients and space.
如果黄蜂在一个寄主卵中产卵过多，黄蜂幼虫会因为营养和空间不够而产生竞争导致死亡。
If they laid too many eggs in a host egg, the developing wasp larvae would compete with each other to the death for nutrients and space.
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