hectocotylus

简明释义

英[/ˌhɛk.təˈkɒt.ɪ.ləs/]美[/ˌhɛk.təˈkɒt.ɪ.ləs/]

n. [无脊椎] 交接腕；化茎腕

复 数 h e c t o c o t y l i

英英释义

单词用法

同义词

反义词

例句

1.The hectocotylus in benthic octopuses is usually the third right arm.

底栖章鱼中的交接腕通常是第三个右臂。

2.The hectocotylus in benthic octopuses is usually the third right arm.

底栖章鱼中的交接腕通常是第三个右臂。

3.In some species, the hectocotylus can be quite elaborate and decorated.

在某些物种中，hectocotylus可能非常复杂并且装饰华丽。

4.The male octopus uses its hectocotylus to transfer sperm to the female.

雄性章鱼使用其hectocotylus将精子转移给雌性。

5.Scientists study the hectocotylus to understand octopus mating behaviors.

科学家研究hectocotylus以了解章鱼的交配行为。

6.During mating season, the hectocotylus plays a crucial role in reproduction.

在繁殖季节，hectocotylus在繁殖中发挥着至关重要的作用。

7.The hectocotylus is often mistaken for a tentacle due to its appearance.

由于外观，hectocotylus常被误认为是触手。

作文

The ocean is a vast and mysterious place, home to countless creatures that exhibit fascinating adaptations. Among these creatures are cephalopods, a class of mollusks that includes squids, octopuses, and cuttlefish. One of the most intriguing features of some male cephalopods is the presence of a specialized arm known as the hectocotylus. This unique appendage plays a crucial role in their reproductive process, showcasing the complexity of life beneath the waves.The hectocotylus is an arm that has evolved specifically for mating purposes. In many species of squids and octopuses, the male uses this modified arm to transfer sperm to the female. The structure of the hectocotylus varies among different species, but it generally has a more slender and elongated shape compared to the other arms. This adaptation allows for efficient sperm transfer during copulation.During the mating ritual, the male cephalopod will often engage in elaborate displays to attract the female. These displays can include changes in color and texture, which are made possible by specialized skin cells called chromatophores. Once the female is receptive, the male approaches and uses his hectocotylus to deliver packets of sperm, known as spermatophores, directly into the female's body. This method of reproduction is not only fascinating but also highlights the intricate behaviors that have evolved in cephalopods over millions of years.Interestingly, the hectocotylus is not only a tool for reproduction but can also be a source of vulnerability for the male. In some species, after mating, the male may lose his hectocotylus or even die shortly after the reproductive process. This phenomenon raises questions about the evolutionary strategies of these creatures, as they invest so much energy into reproduction at the cost of their own lives.The study of the hectocotylus and its role in cephalopod reproduction offers valuable insights into the complexities of marine biology. Researchers continue to explore how these unique adaptations have allowed cephalopods to thrive in diverse environments. Understanding the function of the hectocotylus can also shed light on the broader themes of evolution and natural selection, illustrating how specific traits can enhance reproductive success in various species.In conclusion, the hectocotylus serves as a remarkable example of nature's ingenuity. This specialized arm not only facilitates reproduction but also embodies the intricate relationships and behaviors that define the lives of cephalopods. As we explore the depths of the ocean, studying such unique adaptations helps us appreciate the diversity of life forms that inhabit our planet. The hectocotylus is just one of many examples that remind us of the wonders of evolution and the endless mysteries waiting to be uncovered beneath the waves.

海洋是一个广阔而神秘的地方，栖息着无数展现迷人适应性的生物。其中，头足类动物是一类软体动物，包括鱿鱼、章鱼和墨鱼。在一些雄性头足类动物中，最引人注目的特征之一是存在一种特殊的触手，称为hectocotylus。这个独特的附肢在它们的繁殖过程中扮演着至关重要的角色，展示了海洋深处生命的复杂性。hectocotylus是一个专门为交配目的而进化的触手。在许多种类的鱿鱼和章鱼中，雄性使用这个改良的触手将精子转移给雌性。hectocotylus的结构因物种而异，但通常与其他触手相比，它的形状更细长且延伸。这种适应性使得在交配过程中能够高效地转移精子。在交配仪式中，雄性头足类动物通常会进行复杂的展示以吸引雌性。这些展示可以包括颜色和质地的变化，这些变化得益于称为色素细胞的特殊皮肤细胞。当雌性准备好时，雄性会接近并使用他的hectocotylus将精子包（称为精囊）直接送入雌体内。这种繁殖方式不仅令人着迷，也突显了头足类动物在数百万年中进化出的复杂行为。有趣的是，hectocotylus不仅是繁殖的工具，还可能成为雄性的脆弱之处。在某些物种中，交配后，雄性可能会失去他的hectocotylus，甚至在繁殖过程后不久死亡。这一现象引发了关于这些生物进化策略的问题，因为它们在繁殖上投入了如此多的能量，却以自己的生命为代价。对hectocotylus及其在头足类动物繁殖中的作用的研究，为海洋生物学的复杂性提供了有价值的见解。研究人员继续探索这些独特适应性如何使头足类动物在多样的环境中繁荣生存。理解hectocotylus的功能也可以揭示更广泛的进化和自然选择主题，说明特定特征如何增强各种物种的繁殖成功。总之，hectocotylus是大自然聪明才智的一个显著例子。这种特殊的触手不仅促进了繁殖，还体现了定义头足类动物生活的复杂关系和行为。当我们探索海洋深处时，研究这种独特的适应性帮助我们欣赏栖息在我们星球上的生命形式的多样性。hectocotylus只是众多例子之一，让我们想起进化的奇迹和等待我们在海洋深处揭开的无尽谜团。