instar
龄
常用释义
英音[ ˈɪnstɑː(r) ]
美音[ ˈɪnˌstɑːr ]
变形
复数:
instars
第三人称单数:
instars
现在分词:
instarring
过去式:
instarred
过去分词:
instarred
基本释义
- n. [昆]龄，龄期（幼虫两次蜕皮间的虫期）；中间形态
- vt. 将……镶上星星或星状物
例句
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1·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。
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2·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。
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3·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；
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4·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。
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5·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。
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6·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。
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7·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。
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8·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。
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9·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
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10·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；