instar

1. From about one week before pupation ( the last instar) haemolymph ecdysteroid titres went up forming two separated peaks.
   预蛹化蛹前一周血淋巴中蜕皮甾类激素滴度存在两个与变态相对应的峰值。
2. Application of bio-organic fertilizers effectively reduced the population of the second instar larvae of RKN in soil and egg mass of RKN in roots;
   施用生物有机肥可显著减少土壤中根结线虫二龄幼虫的密度和根中卵块的数量；
3. In every climate zone, the key factors that affected the number of the cochineal population were eggs unhatched and strong rain during the1st and2nd instar.
   在各气候条件下，影响胭脂虫种群数量变动的主导因素为卵的孵化率及1龄若虫或2龄若虫期的强降雨。
4. The results showed that the absorption of nitrogen decreased hile that of sugar increased with larval development from the third to fifth instar.
   结果表明：幼虫对饲料中氮的吸收能力随虫龄增加而下降，对糖的吸收能力则随之而增强；
5. The results indicated that the living bristlegrass was better than rice in feeding Chinese rice grasshopper before 3rd instar, but it was conversed for the subsequent instars.
   试验结果表明3龄前饲以活体狗尾草优于水稻，而3龄后则相反。
6. The wasp prefers to lay eggs first on adult females and then on the2nd, 3th instar larvae of Its host.
   该蜂对寄主有一定的选择性，偏好寄生较大的雌成虫，其次是2、3龄雌若虫。
7. The results indicated that the1st instar larvae of A.lucorum was the sensitive stage.
   结果表明：绿盲蝽的敏感虫态为1龄若虫；
8. Developmental period of the parasitoid pupa from hosts ( 3rd instar) fed on KMD1 was significantly shorter.
   蜂蛹历期均短于对照，但仅3龄差异显著；
9. The wing dimorphism differentiation sensitive instar was inferred and compared between the male and female individuals.
   本文还比较了长翅型雌、雄性个体之间间接飞行肌的发育情况。
10. Predation test shows that a mite eats on average two eggs of housefly per day and four mites consume on average one first instar fly larva per day.
    每只雌螨每天平均消耗2个蝇卵，每4只雌螨每天平均消耗1条1龄蝇类幼虫。
11. Research in Hawaii has show that doses of1,000 Gy or more may be required to prevent hatch of irradiated eggs, molting of treated larvae to the next instar or pupation of treated mature larvae.
    夏威夷的研究表明，阻止辐照过的卵孵化、被处理幼虫蜕皮进入下一龄期或被处理老熟幼虫化蛹，可能需要1000居里（Gy）或更高的剂量。
12. Adult phototaxis and first instar larva eat rotten organic matter.
    成虫有趋光性，初孵幼虫喜食已腐烂的有机质。
13. The results showed significant effects of different environment colors on the developmental duration of H.axyridis larvae in each instar.
    结果显示：不同环境颜色条件对异色瓢虫幼虫各龄历期均有显著影响；
14. Objective The bioactivity of twelve novel pyridine ring derivatives of podophyllotoxin were tested against 3rd instar larvae of Culex pipiens pallens.
    目的研究新型吡啶类鬼臼毒素衍生物对3龄淡色库蚊幼虫的的毒杀活性。
15. Damage amount and damage loss to cotton by the various instar larvae of cotton bollworm, Helicoverpa armigera were got through inoculating larvae to cotton plant.
    通过人工接虫为害，获得了棉铃虫各龄期幼虫在棉花上的为害量和为害损失。
16. Natural survival rate of eggs and the various instar larvae in different years were also investigated.
    并观察了不同年份棉铃虫卵和各龄幼虫的自然存活率。
17. The enzyme activity of different instar of Bombyx mori were determined;
    探讨了家蚕不同龄期幼虫的酶活性；
18. Parasitism rates were higher for the 2nd and 3rd instar larvae than for the 4th and 1st instars.
    偏爱寄生2龄和3龄幼虫；
19. Humidity could significantly affect the hatch and survival of 2nd instar larvae of Meloidogyne incognita.
    湿度对南方根结线虫卵孵化和2龄幼虫的存活均有显著的影响。
20. Lm-TSP expression profile in different tissues of the fifth instar larvae is analyzed.
    分析了东亚飞蝗五龄幼虫不同组织器官Lm-TSP基因表达情况。

noun

1. an insect or other arthropod between molts