prepupa

简明释义

英[ˌprɛˈpjuːpə]美[ˌprɛˈpjuːpə]

n. [昆] 预蛹

英英释义

单词用法

同义词

反义词

例句

1.The experimentation on the growth and development showed that the SCNE had significant good inhibitory effects, with the most malformation of the prepupa, the pupae and the mature.

瑞香狼毒对菜青虫的生长发育有较大影响，抑制幼虫发育，并使由其发育成的蛹及羽化出的成虫畸形；

2.The experimentation on the growth and development showed that the SCNE had significant good inhibitory effects, with the most malformation of the prepupa, the pupae and the mature.

瑞香狼毒对菜青虫的生长发育有较大影响，抑制幼虫发育，并使由其发育成的蛹及羽化出的成虫畸形；

3.In general, larva having the lowest survival rate was the main fatal stage during group rearing following by prepupa and pupa.

集体饲育以幼虫期之死亡率最高，为主要死亡时段，前蛹期次之，蛹期最低。

4.During its life cycle, the insect spends time as a prepupa 前蛹 to prepare for metamorphosis.

在其生命周期中，昆虫会作为prepupa 前蛹度过一段时间，以为变态做准备。

5.In some species, the prepupa 前蛹 can remain inactive for extended periods.

在某些物种中，prepupa 前蛹可以保持不活动很长时间。

6.The prepupa 前蛹 stage is critical for the development of many species.

对于许多物种来说，prepupa 前蛹阶段是至关重要的。

7.The larva will molt into a prepupa 前蛹 before entering the pupal stage.

幼虫会蜕皮成一个prepupa 前蛹，然后进入蛹阶段。

8.Researchers observed the behavior of the prepupa 前蛹 in a controlled environment.

研究人员在受控环境中观察了prepupa 前蛹的行为。

作文

In the fascinating world of entomology, the life cycle of insects is a subject of great interest. One of the lesser-known stages in this cycle is the stage known as prepupa, which occurs after the larval stage and before the pupal stage. Understanding the prepupa stage can provide insights into the developmental processes of various insect species. This transitional phase is crucial for the transformation that an insect undergoes as it prepares to become an adult. During the prepupa phase, the organism begins to undergo significant physiological changes that will set the stage for metamorphosis.The prepupa is characterized by a period of inactivity, where the larva often seeks a safe place to rest. This stage typically lasts for a few days to several weeks, depending on the species and environmental conditions. The larva stops feeding and may exhibit changes in coloration and body shape as it prepares for the next stage of its life cycle. This preparatory phase is essential as it allows the insect to conserve energy and reorganize its body structure in preparation for the dramatic changes that will occur during the pupal stage.Interestingly, the prepupa stage is not just a passive waiting period; it is a time of critical internal changes. Hormonal shifts trigger the reorganization of tissues and organs, allowing the insect to develop the structures necessary for adulthood. For example, in butterflies, the wings begin to form during this stage, although they are not yet visible externally. This internal preparation is vital for the insect’s survival and ability to reproduce once it emerges as an adult.In addition to the biological significance of the prepupa stage, it also highlights the importance of environmental factors in insect development. Temperature, humidity, and food availability can all influence the duration and success of the prepupa phase. In adverse conditions, some insects may delay their transition to the pupal stage, demonstrating remarkable adaptability. This ability to pause development is a survival strategy that can help ensure the species' continuity in changing environments.Moreover, studying the prepupa stage can have practical implications for agriculture and pest management. Understanding how and when certain pests enter this stage can help farmers develop more effective strategies for controlling insect populations. By targeting the prepupa stage, it may be possible to reduce the number of pests that reach maturity and cause damage to crops.In conclusion, the prepupa stage is a fascinating and critical component of the insect life cycle. It serves as a bridge between the larval and pupal stages, allowing for essential transformations that prepare the insect for adulthood. By studying this stage, we gain valuable insights into the complexities of insect development and the factors that influence it. Whether for scientific research or practical applications in agriculture, understanding the prepupa phase can enhance our knowledge of these remarkable creatures and their role in the ecosystem.

在迷人的昆虫学世界中，昆虫的生命周期是一个引人注目的主题。其中一个鲜为人知的阶段是称为prepupa的阶段，它发生在幼虫阶段之后和蛹阶段之前。理解prepupa阶段可以为我们提供有关各种昆虫物种发育过程的见解。这个过渡阶段对昆虫转变为成虫至关重要。在prepupa阶段，生物体开始经历显著的生理变化，为变态做准备。prepupa的特点是一个不活动的时期，幼虫通常寻找一个安全的地方休息。这个阶段通常持续几天到几周，具体取决于物种和环境条件。幼虫停止进食，并可能出现颜色和体型的变化，以便为下一个生命阶段做准备。这个准备阶段至关重要，因为它允许昆虫节省能量并重组其身体结构，以便为蛹阶段发生的剧烈变化做好准备。有趣的是，prepupa阶段不仅仅是一个被动的等待期；这是内部关键变化的时期。激素变化触发组织和器官的重组，使昆虫能够发育出成年所需的结构。例如，在蝴蝶中，翅膀在这个阶段开始形成，尽管它们在外部尚不可见。这种内部准备对昆虫的生存和繁殖能力至关重要，一旦它作为成虫出现，就可以进行繁殖。除了prepupa阶段的生物学意义外，它还突显了环境因素在昆虫发育中的重要性。温度、湿度和食物可用性都可以影响prepupa阶段的持续时间和成功。在不利条件下，一些昆虫可能会延迟进入蛹阶段，表现出惊人的适应能力。这种暂停发育的能力是一种生存策略，可以帮助确保物种在不断变化的环境中的延续。此外，研究prepupa阶段对农业和害虫管理也具有实际意义。了解某些害虫何时进入这一阶段，可以帮助农民制定更有效的控制昆虫种群的策略。通过针对prepupa阶段，可能可以减少达到成熟并对作物造成损害的害虫数量。总之，prepupa阶段是昆虫生命周期中一个引人入胜且至关重要的组成部分。它作为幼虫阶段与蛹阶段之间的桥梁，允许进行必要的转变，为昆虫成年做好准备。通过研究这一阶段，我们获得了对昆虫发育复杂性及其影响因素的宝贵见解。无论是出于科学研究还是农业中的实际应用，理解prepupa阶段都可以增强我们对这些非凡生物及其在生态系统中角色的认识。