若虫

There was a stable and relatively low expression level for Lbα1 and a progressive expression pattern for Lbα8 among the 1st,2nd,3rd,and 4th nymphal stages.5 Development and reproduction of L.decolor as a function of temperatureThe developmental rate,survival,intrinsic rate of increase,net reproductive rate(R_0),mean generation time,and population doubling time of L.decolor population were evaluated at eight constant temperatures.

Lb a1在1龄、2龄、3龄、4龄若虫及成虫中的表达水平分别是Lb a8的2.03、2.55、4.77、6.54、和5.28倍，且它们之间的差异均达到显著水平(P＜0.05)。5温度对无色书虱发育和繁殖的影响通过比较无色书虱在不同温度条件下的发育速率、存活率、内禀增长率等生命参数以明确无色书虱在不同温度条件下的发生发展规律。

In contrast,the expression levels of Lb est2 in nymphal stages are lower than that in adult stage.2 Gene cloning of AChE and mRNA expression level in L.entomophila2.1 Gene cloning and sequence analysis of AChE in L.entomophilaTwo full length cDNA encoding AChE were cloned from L.entomophila by the methods of RT-PCR and RACE,named Le ace1(GenBank Accession No.:EU854149) and Le ace2GenBank Accession No.

CarE基因在不同发育阶段mRNA表达量的分析结果表明，Lb est1的表达量随着该虫生长发育的进行逐渐降低，至成虫期时表达水平最低；相反，L6 est2在若虫期表达水平较低，而在成虫期表达水平最高。2嗜虫书虱乙酰胆碱酯酶基因克隆及其mRNA表达水平研究2.1嗜虫书虱乙酰胆碱酯酶基因克隆及序列分析利用RT-PCR和RACE技术成功克隆获得嗜虫书虱2个AChE基在的全长序列，分别命名为Le ace1(GenBank登录号：EU854149)和Le ace2(GenBank登录号：EU854150)。

Imidacloprid showed low ovicidal effects, but was highly toxic to the nymphs and adults.

吡虫啉对两生物型卵的毒力低，但对若虫和成虫毒力高。

Objective To study the infection status of body lice among the middle and primary school students in rural areas and to explore the relationship between the infection and personal or social factors. Methods 758 rural students were recruited in Bengbu. The eggs, nymph or adults of Pediculus humanus corporis in the seams and folds of clothes were examined by eyes. Students were surveyed about the factors including personal hygiene habits, parents' educational level and occupation, living conditions and the number of family children by questionnaire.

目的 了解农村中小学生体虱感染状况，探讨体虱感染与人和社会因素的关系方法选取蚌埠市农村中小学生758名，肉眼观察学生贴身内衣皱缝处，发现体虱成虫、若虫及活卵者均感染阳性；对学生的卫生习惯、父母文化程度及职业、家庭居住情况和家庭子女等进行问卷调查。

Many mayfly species are clumsy swimmers at best, and combine that with shucking their outer nymph skin, they become a flailing treat for the waiting trout.

很多蜉蝣种拙游泳充其量结合，剥其外层若虫皮肤他们等候治疗退化成为鳟。

Research on four plant extracts showed that tangerine had high stomach and contact toxity to Blattella germanica.

触杀试验结果表明，桔皮油、芥末油和生姜汁对德国小蠊若虫表现出一定程度的触杀作用，其校正死亡率率分别为58.62％、29.31％和15.52％，观察尚未发现大蒜提取物对德国小蠊触杀作用。

Microscope examination showed that whitefly occurred in Beijing was B. tabaci rather than T. vaporariorium by vasiform orifice characters of the fourth instars.

根据北京重发区粉虱的形态特征，表明该粉虱应属烟粉虱，主要的鉴别特征是它们的四龄若虫腹背瓶形孔构造。

Nymph and female imago are teeming in midrib of back of the floral limb such as orange, leaf two side are mixed it is on fructification kill, suck juice, make Xie Huangzhi withered, vimineous atrophy, cerebral cortex is coarse.

若虫和雌成虫群集在柑橘等植物的枝干。叶背中脉两侧和果实上为害，吸食汁液，使叶黄枝枯，枝条萎缩，皮层粗糙。

The percentage of active transmission of small brown plant hopper varied with the infection stage of RBSDV in maize cell while the nymph acquiring feeding. There were 2.93% and 7.83% of viruliferous rate resp

用灰飞虱无毒若虫在细胞内病毒基质出现和病毒增殖期饲毒的，到成虫时分别有2.93%和7.83%个体传毒率；在细胞内病毒成串分布于管状结构和晶格状聚集排列期饲毒的，到成虫时均不能传毒。

Objective To explore the effects of different nutritional conditions on the lifespan,development and fecundity of the nymphs and imagoes of blattella germanica.

目的 研究不同营养条件对德国小蠊若虫和成虫寿命、发育及繁殖力的影响，进一步的了解其生物学特性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了