Objective To construct a cDNA expression library of Periplaneta Americana nymph.

目的　构建美洲大蠊若虫cDNA表达文库.

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That evening another team member found four more larvae.

那天傍晚,另一位队员也找到了四只若虫.

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The larvae grow very fast, molting their skins several times as they mature into adults.

螳的若虫发育得很快, 在成熟前会蜕皮好几次.

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Pathogenicity test at saturated humidity showed that the third instar was very susceptible to fungal infection.

在饱和湿度下三龄烟粉虱若虫对真菌侵染非常敏感.

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By injecting 2～5 mL of 40 % Rogor into the bamboo stalk, the scale mortality was above 93.8 %.

用40%乐果原液2~5mL秆部注药防治成虫或若虫, 防治效果达93.8%以上.

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Buprofezin has high activity against nymphs of the brown planthopper ( BPH ) and has effectively ovicidal action.

噻嗪酮对褐稻 虱 若虫有很高的生物活性,并具有杀卵作用.

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It develops 3 generations each year in Fuzhou suburbs and overwinters mainly with nymphae and afew adults.

在福州郊区一年发生3代,主要以若虫和少数成虫越冬.

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Both its nymphae adult are nocturnal , favor darkness and thus hind in all kinds of crevices.

成、若虫均喜黑暗,隐藏在各种缝隙内.

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