pygidium

简明释义

英[paɪˈdʒɪdiəm]美[paɪˈdʒɪdiəm]

n. [无脊椎] 尾板；[昆] 臀板

复 数 p y g i d i a

英英释义

单词用法

同义词

反义词

例句

1.New sections are added right before the pygidium.

新部分是再尾板前添加的。

2.New sections are added right before the pygidium.

新部分是再尾板前添加的。

3.Researchers collected samples of the pygidium to study evolutionary adaptations.

研究人员收集了尾节的样本以研究进化适应性。

4.The morphology of the pygidium can vary significantly among different species.

不同物种之间，尾节的形态可能有显著差异。

5.The pygidium is often used as an identifying feature in taxonomic classification.

尾节常被用作分类学中的识别特征。

6.In some crustaceans, the pygidium plays a crucial role in locomotion.

在一些甲壳类动物中，尾节在运动中起着关键作用。

7.The scientist examined the pygidium of the insect to understand its anatomy.

科学家检查了昆虫的尾节以了解其解剖结构。

作文

The fascinating world of biology is filled with unique terms that describe various anatomical structures. One such term is pygidium, which refers to the posterior part of certain arthropods, particularly in insects and crustaceans. Understanding the significance of the pygidium can enhance our appreciation for the complexity of these creatures and their adaptations to different environments.In the realm of entomology, the pygidium serves as a crucial component of an insect's anatomy. It is located at the rear end of the body, often playing a role in protection and locomotion. For example, in beetles, the pygidium is typically hardened and may provide armor against predators. This adaptation is vital for survival, as it allows these insects to thrive in various habitats, from forests to deserts.Moreover, the pygidium can also be involved in reproduction. In some species, males may use their pygidium during mating displays or battles for territory. This highlights the multifunctional nature of this anatomical feature, which is not merely a structural component but also plays a role in the behavioral ecology of the species.In crustaceans, the pygidium takes on a slightly different form but retains its importance. It can be seen as part of the tail fan, contributing to swimming and maneuvering in aquatic environments. The structure of the pygidium in these animals illustrates the evolutionary adaptations that have occurred over millions of years. For instance, in shrimps, the shape and flexibility of the pygidium allow for rapid bursts of movement, aiding in escaping predators and catching prey.The study of the pygidium is not only limited to its anatomical function but also extends to its evolutionary implications. By examining the variations of the pygidium across different species, scientists can gain insights into the evolutionary pressures that have shaped these organisms. This can include factors such as habitat, predation, and competition, all of which influence how the pygidium has developed over time.Furthermore, understanding the pygidium can also contribute to broader ecological studies. In ecosystems where insects and crustaceans play pivotal roles, changes in their populations can have cascading effects. For instance, if a particular species with a specialized pygidium were to decline due to environmental changes, it could impact the food web and the overall health of the ecosystem.In conclusion, the term pygidium encapsulates more than just a biological definition; it represents a window into the intricate relationships between structure, function, and evolution in the animal kingdom. By studying the pygidium, we not only learn about the specific adaptations of individual species but also gain a greater understanding of biodiversity and the delicate balance of ecosystems. As we continue to explore the natural world, terms like pygidium remind us of the wonders that lie beneath the surface, waiting to be discovered and appreciated.

生物学的迷人世界充满了描述各种解剖结构的独特术语。其中一个术语是pygidium，指的是某些节肢动物，特别是昆虫和甲壳类动物的后部。理解pygidium的重要性可以增强我们对这些生物复杂性及其适应不同环境能力的欣赏。在昆虫学领域，pygidium作为昆虫解剖结构的关键组成部分，位于身体的尾部，通常在保护和运动中发挥作用。例如，在甲虫中，pygidium通常是硬化的，可能为其提供对捕食者的保护。这种适应对于生存至关重要，因为它使这些昆虫能够在从森林到沙漠等各种栖息地中繁衍生息。此外，pygidium还可以参与繁殖。在一些物种中，雄性可能会在交配展示或领土争夺中使用其pygidium。这突显了这一解剖特征的多功能性，它不仅仅是一个结构组成部分，还在物种的行为生态中发挥作用。在甲壳类动物中，pygidium呈现出略有不同的形态，但仍然保持其重要性。它可以被视为尾鳍的一部分，有助于在水生环境中的游泳和机动。甲壳类动物中pygidium的结构说明了数百万年来发生的进化适应。例如，在虾类中，pygidium的形状和灵活性允许快速爆发式的运动，有助于逃避捕食者和捕捉猎物。对pygidium的研究不仅限于其解剖功能，还扩展到其进化意义。通过研究不同物种之间pygidium的变异，科学家可以获得关于塑造这些生物的进化压力的见解。这可能包括栖息地、捕食和竞争等因素，所有这些都影响着pygidium随时间的发展。此外，理解pygidium还可以为更广泛的生态研究做出贡献。在昆虫和甲壳类动物发挥关键作用的生态系统中，它们种群的变化可能会产生连锁反应。例如，如果一种具有特殊pygidium的特定物种由于环境变化而减少，这可能会影响食物网和生态系统的整体健康。总之，术语pygidium所包含的不仅仅是生物学定义；它代表了动物王国中结构、功能和进化之间错综复杂关系的窗口。通过研究pygidium，我们不仅了解个体物种的特定适应性，还能更深入地理解生物多样性和生态系统的微妙平衡。当我们继续探索自然世界时，像pygidium这样的术语提醒我们，潜藏在表面之下的奇迹正等待着被发现和欣赏。