若虫

In order to understand these differences on gene transcript level, even to get the genes and their expression related to cell culture, we researched the differences of total mRNA of these tissues by RAPD-PCR, the result showed that the difference between embryo and head of nymphae was much closer than embyo with others, which was accorded to the time order of insect upgrown, and the tissue which is more different from embryo on transcript level ismore diiBcult to be cultured in vitro.

四种组织的培养难易程度和分离出的细胞形态的不同，说明存在着组织表达的差异，为了从转录水平上来认识它们的差异，甚而获得与细胞培养难易相关的基因及其表达产物，本实验还采用了RAPD分析的方法进行了这四种组织：中后期虫卵胚胎、若虫头部组织、成虫的精巢和卵巢的mRNA表达差异研究，结果表明：从发育方向上看，四种组织的表达差异有分化越大差异系数越大的趋势，而在相同条件下则越难培养。

There w ere two types for sensilla trichodea. Some bohm bristles formed sensilla cluste r on antenna of nymphae.

其中毛形感器有2个类型，若虫触角上的部分蒲姆氏鬃毛组合成弧形感觉簇。

With the nymphae of L. imitate on longan tree as tested objects, the 98.5% N24 mineral oil pesticide and 99% EnSpray mineral oil EC were diluted with water at 100 and 200 times of solution resp., the control effect of 98.5% N24 mineral oil pesticide on L. imitate of longan was researched by field experiment.

方法］以龙眼树上的白蛾蜡蝉若虫为供试对象，用98.5%N24矿物油杀虫剂和99%绿颖矿物油乳油分别对水稀释100和200倍液，通过田间试验，研究了98.5%N24矿物油杀虫剂对龙眼白蛾蜡蝉防治效果。

Second generation lar-vae and nymphae are fed to healthy donkey,after larvae and nymphae are engorged anddropped,they were also put in incubator to moult.

再将次代幼虫和若虫饲喂在健康驴体上，待饱血脱落后仍置培育箱中蜕化。观察了各发育阶段蜱的血淋巴、肠管、唾液腺以及卵内驽巴贝斯虫的发育形态。

Antennal morphology and sensilla of A. suturalis were studi ed w ith scanning electron microscopy. The results showed that four types of sensilla were observed on the antenna of adults and nymphae, including sensilla chaetica , sensilla trichodea, sensilla basiconca, and bahm bristles, and no morphologic a l difference was found in these sensilla between male and female adults.

采 用扫描电镜技术对其触角形态和感器进行观察，结果表明：中黑盲蝽雌雄成虫及若虫触角上分布4种类型的感器，分别为刺形、毛形、锥形和蒲姆氏鬃毛，且这些感器不存在性二型现象。

Antennal morphology and sensilla of A. suturalis were studi ed w ith scanning electron microscopy. The results showed that four types of sensilla were observed on the antenna of adults and nymphae, including sensilla chaetica , sensilla trichodea, sensilla basiconca, and bhm bristles, and no morphologic a l difference was found in these sensilla between male and female adults.

采 用扫描电镜技术对其触角形态和感器进行观察，结果表明：中黑盲蝽雌雄成虫及若虫触角上分布4种类型的感器，分别为刺形、毛形、锥形和蒲姆氏鬃毛，且这些感器不存在性二型现象。

It usually occurs 5 generations each year and overwinters on the reed stalk in nymphal and adult stages.

宫苍仁蚧在江苏沿海滩涂的芦苇上，年发生4～6代，以成、若虫在芦苇茎秆上越冬。

Nymphal development was greatly influenced by photoperiod with different photoperiodic response pattern occurring between Okinawa and Hachijo population.

结果表明，光周期显著影响两地理种群的若虫发育，然而，冲绳和八丈岛种群间显示不同的光周期反应模式。

The nymphal period and life period in every generation of E. pirisuga and its reproductive capacity all had close relationships with temperature.

茶小绿叶蝉各代若虫历期、各世代生活历期和繁殖能力均与温度有密切的关系。

Fry feed on nymphal and larval insects while in fresh water, but once at sea may not feed at all until they become juveniles, when they eat copepods and other zooplankton.

在新鲜的水中，但一旦在海上可能不饲料，直至他们吃桡足类和其他浮游动物时，他们变得青少年，鱼苗喂若虫和幼虫昆虫。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。