Near the end of each instar, the larva undergoes a process called apolysis.
每一个龄期快结束时，幼虫会经历老落这一过程。
The wing buds extend to 3 rd abdomen on 5 th instar.
五龄时翅芽延伸至腹部第三节。
The wing buds were found on the 4 th instar dorsal view.
四龄若虫由背面观具明显翅芽；
With 8th instar nymphs, the critical period for regeneration was from 20 to 26 days-old.
以8龄若虫为研究对象，发现其再生临界期为20 ~26日龄。
The enzyme activity of the 5th instar was the highest and that of the pupa was the lowest.
结果表明，不同虫态及虫龄的多酚氧化酶活力有很大的不同，其中以5龄幼虫酶活力最高，蛹酶活力最低。
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。
In contrast, the temperature did not distinctly influence the survival of both 3rd and 5th instar larvae.
温度对3龄幼虫取食、生长和存活无显著影响，但对5龄幼虫的取食和体重增长则有显著影响。
Fasting experiments with the fifth instar larva indicate that free lipidscould be utilized as an energy source.
结合幼虫饥饿实验，表明游离脂肪是可以被动用的作为能源的物质之一。
Above: Salivary lips showing parallel ridges of inner surface of lower lip, last larval instar of Osmia chalybea.
上图：壁蜂老熟幼虫下唇内表面的平行纹
The stages of egg, larva of instar 1 to 4, pupa, and the whole generation were influenced greatly by temperature.
对于不同的生活史阶段，豆荚野螟卵、1～4龄幼虫、蛹及整个世代受温度影响显著；
The larvae had five instars, and exuviated at night, pupated at 5rd instar old larvae, pupation time need 2-4 days.
幼虫共有5龄，以夜晚蜕皮为主，5龄幼虫老熟后即觅地化蛹，化蛹持续时间2 - 4天。
The larvae before 4th instar were aggregate distribution and after 5th instar were even distribution on chinese cabbage.
在白菜上，幼虫在4龄前为聚集分布，5龄以后为均匀分布，棉花和向日葵上各龄幼虫均为聚集分布。
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。
In experimental populations, mortalities of the 5th instar larvae and pupae were higher than those of instars at initial stages.
实验种群中初期死亡率较低，5龄幼虫和蛹的死亡率较高。
In early stage of 4th instar, thick basement membrane and irregularly round nucleus of the prothoracic gland cell were observed.
在四龄龄初细胞基底膜很致密，细胞核不规则形。
Various corn borer microsporozoites were used to feed and soak Dendrolimus honi larvae at the instar of 1,2,4 and 7 for infecting them.
用不同浓度的玉米螟微孢子虫悬浮液，饲喂及浸泡感染1、2、4、7龄云南松毛虫幼虫。
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；
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；
Different kinds of food taken by the larvae of Eriogyna pyretorum(Westwood) have a great influence on their appetite, instar-stage and mortality.
樟蚕幼虫取食不同食物，对其食量、龄期、死亡率等均有明显影响。
The content of protein in blood has a dynamic change from first day of fifth instar to first day of pupation on cassava-silkworm(the Nanning No. 1 race).
本文报道木薯蚕南一品种，从五龄起蚕至化蛹第一天血液蛋白质含量的动态变化。
The results showed that; (1) MH comes into antagonism with AJH, but JH doesn't antagonize AJH in the 2nd, 3rd and 4th instar larvae treated by the hormones.
结果表明：(1)2龄、3龄和4龄蚕应用外源激素处理，AJH与MH之间存在明显的拮抗关系；而ajh与JH间未表现出拮抗关系。
The parasitizing rate and pupae weight which were bred in the larvae of the 1st instar were the lowest but the mortality rate after parasitizing was the highest.
寄生蜂对1龄寄主幼虫的寄生率以及1龄粘虫育出的茧重均是三个龄期寄主中最小的，但死亡率却是三者间最高的。
A large amount of sericin protein was synthesized after the 5th day of the last instar and its synthetic activity was the highest on the last day of the 5th instar.
中部丝腺中丝胶蛋白的大量合成，是在五龄5日以后，以熟前一日合成活性最高。
The parasitized DBM larvae had prolonged their 4th instar duration obviously, and the later the larva had been parasitized, the longer this extended duration became.
小菜蛾幼虫被寄生后，其4龄发育历期较未被寄生的显著长，且寄生时龄期越大4龄历期延长越多。
Microarray data in different tissues showed that it has significant expression signals in head and epidermis of day-3 5th instar larvae, which was verified by RT-PCR.
基因芯片数据显示在家蚕5龄第3天的头部和体壁组织中的表达量较高，RT - PCR验证结果与此一致。
Liquid crystal is a kind of instar matter between completeness inerratic crystal and isotropic liquid. Its characters are between the solid crystal and the isotropic liquid.
液晶是介于完全规则的晶体和各向同性的液体之间中间态的一种物质，其特性与结构介于固态晶体与各向同性液体之间。
The results showed that parasitized rates of host larvae fed on KMD1 were significantly (3rd instar) or very significantly (4th and 5th instar) lower than those of the control.
结果发现：KMD1处理后，三个龄期幼虫的寄生率都显著下降，其中4龄和5龄达极显著水平；
Law between digestion and growth of Antheraea yamamai is obtained through determining average weight increase at each instar, and calculating growth multiple of weight every instar.
并且对各龄蚕体重的平均增长量进行了测试，计算了各龄期蚕体的增重倍数，揭示了天蚕随着龄期的增长消化和体重的变化规律。
Law between digestion and growth of Antheraea yamamai is obtained through determining average weight increase at each instar, and calculating growth multiple of weight every instar.
并且对各龄蚕体重的平均增长量进行了测试，计算了各龄期蚕体的增重倍数，揭示了天蚕随着龄期的增长消化和体重的变化规律。
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