ambulacral groove

简明释义

步带沟

英英释义

例句

1.Researchers observed how the ambulacral groove (辐射沟) functions during locomotion in brittle stars.

研究人员观察了ambulacral groove（辐射沟）在脆星运动过程中的功能。

2.In some species, the ambulacral groove (辐射沟) is covered by a calcareous plate.

在一些物种中，ambulacral groove（辐射沟）被钙质板覆盖。

3.During our marine biology class, we learned that the ambulacral groove (辐射沟) is essential for feeding in echinoderms.

在我们的海洋生物学课上，我们了解到ambulacral groove（辐射沟）对棘皮动物的进食至关重要。

4.The starfish uses its tube feet located in the ambulacral groove (辐射沟) to move along the ocean floor.

海星利用位于ambulacral groove（辐射沟）中的管足在海底移动。

5.The ambulacral groove (辐射沟) allows sea urchins to transport food to their mouths.

ambulacral groove（辐射沟）使海胆能够将食物运输到它们的嘴部。

作文

The sea star, also known as a starfish, is one of the most fascinating marine creatures found in various oceans around the world. One of the key features that make the sea star unique is its anatomical structure, particularly the presence of the ambulacral groove. The ambulacral groove is a distinct channel that runs along the underside of each arm of the sea star. This groove plays a crucial role in the locomotion and feeding mechanisms of these echinoderms.To understand the significance of the ambulacral groove, it is important to explore how sea stars move. Unlike many other marine animals, sea stars do not swim but rather crawl across the ocean floor. The ambulacral groove contains tube feet, which are small, flexible appendages that operate through a hydraulic system. When the sea star wants to move, it fills these tube feet with seawater, causing them to extend. The suction created by the tube feet allows the sea star to grip onto surfaces, enabling it to traverse rocky substrates or sandy bottoms.In addition to locomotion, the ambulacral groove also plays a vital role in the feeding habits of sea stars. These creatures are known for their unique feeding strategy, where they can evert their stomachs out of their bodies to digest prey externally. The ambulacral groove serves as a pathway for the tube feet to assist in capturing prey, such as mollusks and other small invertebrates. Once the prey is secured, the sea star can then begin the process of digestion by extruding its stomach into the shell of the prey, allowing it to absorb nutrients directly.The evolutionary adaptations of the ambulacral groove highlight the remarkable versatility of sea stars. This structure not only facilitates movement and feeding but also contributes to their survival in diverse marine environments. Sea stars can be found in a variety of habitats, from tidal pools to deep-sea ecosystems, showcasing their ability to thrive in different conditions. The efficiency of the ambulacral groove and tube feet system allows them to occupy ecological niches that might otherwise be inaccessible to less adaptable species.Moreover, the ambulacral groove is an excellent example of how form follows function in nature. The design of this groove and its associated structures illustrates the principles of biomechanics, where the physical characteristics of an organism are closely aligned with its lifestyle and environmental needs. By studying the ambulacral groove, scientists can gain insights into the evolutionary processes that shape marine life and the adaptations that enable survival in challenging conditions.In conclusion, the ambulacral groove is a defining feature of sea stars that exemplifies their unique adaptations for movement and feeding. Understanding this structure not only enhances our knowledge of these intriguing creatures but also underscores the complexity of marine ecosystems. As we continue to explore the oceans and uncover the mysteries of marine life, the study of the ambulacral groove and its functions remains a significant area of research, offering valuable insights into the intricate relationships between organisms and their environments.

海星，也被称为星鱼，是一种在世界各地的海洋中发现的迷人海洋生物。使海星独特的关键特征之一是其解剖结构，特别是存在的胼胝沟。胼胝沟是沿着每条海星臂底部延伸的明显通道。这个沟槽在这些棘皮动物的运动和觅食机制中发挥着至关重要的作用。要理解胼胝沟的重要性，首先需要探讨海星如何移动。与许多其他海洋动物不同，海星并不游泳，而是沿着海底爬行。胼胝沟包含管足，这是一种通过液压系统操作的小型灵活附肢。当海星想要移动时，它会用海水填充这些管足，使它们伸展。管足产生的吸力使海星能够抓住表面，从而使其能够穿越岩石基质或沙底。除了运动外，胼胝沟在海星的觅食习惯中也发挥着重要作用。这些生物以其独特的觅食策略而闻名，它们可以将胃从身体外翻出来以进行外部消化。胼胝沟作为管足捕捉猎物的通道，猎物如软体动物和其他小型无脊椎动物。一旦猎物被抓住，海星就可以开始通过将其胃伸出到猎物的壳内来进行消化，从而直接吸收养分。胼胝沟的进化适应突显了海星的非凡多样性。这个结构不仅促进了运动和觅食，还对它们在多样化海洋环境中的生存做出了贡献。海星可以在各种栖息地中找到，从潮池到深海生态系统，展示了它们在不同条件下生存的能力。胼胝沟和管足系统的高效性使它们能够占据可能对适应性较差的物种来说无法进入的生态位。此外，胼胝沟是自然界中形式追随功能的绝佳例子。这个沟槽及其相关结构的设计说明了生物力学原理，即生物体的物理特征与其生活方式和环境需求紧密相关。通过研究胼胝沟，科学家可以深入了解塑造海洋生命的进化过程以及使生存适应挑战条件的适应性。总之，胼胝沟是海星的一个决定性特征，体现了它们在运动和觅食方面的独特适应性。理解这一结构不仅增强了我们对这些迷人生物的认识，还强调了海洋生态系统的复杂性。随着我们继续探索海洋并揭示海洋生命的奥秘，胼胝沟及其功能的研究仍然是一个重要的研究领域，为我们提供了关于生物与环境之间复杂关系的宝贵见解。