chelicera

简明释义

英[kɪˈlɪsərə]美[kəˈlɪsərə]

n. 螯角；螫肢

复 数 c h e l i c e r a e

英英释义

单词用法

同义词

反义词

例句

1.Understanding the anatomy of the chelicera is essential for studying arachnids.

了解螯肢的解剖学对研究蛛形纲动物至关重要。

2.Some scorpions have highly developed chelicera that aid in hunting.

一些蝎子的螯肢高度发达，有助于捕猎。

3.In arachnology, the structure of the chelicera can help identify different species of spiders.

在蛛形纲研究中，螯肢的结构可以帮助识别不同种类的蜘蛛。

4.The venom is delivered through the chelicera of the spider during a bite.

在咬伤时，毒液通过蜘蛛的螯肢释放。

5.The spider uses its chelicera to grasp and immobilize its prey.

蜘蛛用它的螯肢抓住并使猎物失去行动能力。

作文

In the world of arthropods, one of the most fascinating features is the presence of specialized mouthparts. Among these, the structure known as chelicera plays a crucial role, especially in arachnids such as spiders and scorpions. The chelicera (螯肢) are the appendages located near the mouth that are primarily used for feeding. They often take the form of pincers or fangs, which allow these creatures to grasp and manipulate their prey effectively.The anatomy of the chelicera varies significantly among different species. For instance, in many spider species, the chelicera are equipped with venom glands. When a spider captures its prey, it uses its chelicera to inject venom, which immobilizes the victim. This adaptation not only aids in subduing prey but also begins the process of digestion, as the venom contains enzymes that break down the tissues of the prey.In contrast, scorpions possess a more pronounced pair of chelicera that resemble pincers. These structures are not just for feeding; they also play a significant role in defense and competition with other scorpions. The strength and dexterity of the chelicera can determine a scorpion's ability to capture prey or fend off threats. Additionally, some species have developed unique adaptations in their chelicera to suit their specific ecological niches.Understanding the function of the chelicera provides insight into the evolutionary success of arachnids. These creatures have existed for hundreds of millions of years, adapting to various environments and developing specialized feeding strategies. The versatility of the chelicera is a testament to the intricate relationship between form and function in nature.Moreover, the study of chelicera morphology can also shed light on the evolutionary relationships among different arachnid species. By examining the variations in size, shape, and functionality of the chelicera, scientists can infer how these species have evolved over time and how they interact with their ecosystems.In addition to their biological significance, chelicera also hold a place in cultural contexts. For example, in folklore and mythology, spiders and scorpions are often depicted as symbols of danger or cunning. The fearsome appearance of their chelicera contributes to this perception, making them a subject of fascination and fear in human culture.In conclusion, the chelicera (螯肢) is not merely a feeding apparatus; it is a complex structure that reflects the evolutionary history and ecological adaptations of arachnids. From their role in predation to their significance in ecological interactions and cultural symbolism, chelicera are a remarkable example of how specialized anatomical features can lead to the success of a group of organisms. As we continue to explore the diversity of life on Earth, understanding structures like the chelicera will be essential in unraveling the mysteries of evolution and biodiversity.

在节肢动物的世界中，一个最迷人的特征是专门的口器。 在这些结构中，称为chelicera（螯肢）的结构起着至关重要的作用，尤其是在蜘蛛和蝎子等蛛形纲动物中。chelicera是位于嘴部附近的附肢，主要用于进食。 它们通常呈钳子或毒牙的形式，使这些生物能够有效地抓住和操作猎物。chelicera的解剖结构在不同物种之间差异显著。 例如，在许多蜘蛛物种中，chelicera配备了毒腺。 当蜘蛛捕获猎物时，它会使用其chelicera注入毒液，使猎物失去行动能力。 这种适应不仅有助于制服猎物，还开始消化过程，因为毒液中含有分解猎物组织的酶。相比之下，蝎子拥有一对更明显的chelicera，类似于钳子。 这些结构不仅用于进食；它们在防御和与其他蝎子的竞争中也发挥着重要作用。 chelicera的力量和灵活性可以决定蝎子捕获猎物或抵御威胁的能力。此外，一些物种在其chelicera中发展出独特的适应性，以适应其特定的生态位。理解chelicera的功能提供了对蛛形纲动物进化成功的洞察。 这些生物已经存在了数亿年，适应各种环境并发展出专门的进食策略。 chelicera的多样性证明了自然界中形态与功能之间错综复杂的关系。此外，研究chelicera的形态也可以揭示不同蛛形纲物种之间的进化关系。 通过检查chelicera的大小、形状和功能的变化，科学家可以推断这些物种如何随着时间的推移而进化，以及它们如何与生态系统相互作用。除了它们的生物学意义，chelicera在文化背景中也占有一席之地。 例如，在民间传说和神话中，蜘蛛和蝎子常常被描绘为危险或狡猾的象征。 它们的chelicera可怕的外观加剧了这种看法，使它们成为人类文化中的一种迷人与恐惧的主题。总之，chelicera（螯肢）不仅仅是一个进食器官；它是一个复杂的结构，反映了蛛形纲动物的进化历史和生态适应。 从它们在捕食中的作用到它们在生态互动和文化象征中的重要性，chelicera是专门解剖特征如何导致一组生物成功的一个显著例子。 随着我们继续探索地球上生命的多样性，理解像chelicera这样的结构将是揭开进化和生物多样性之谜的关键。