ascidian

简明释义

英[əˈsɪdɪən]美[əˈsɪdiən]

n. 海鞘类

英英释义

单词用法

同义词

反义词

例句

1.The research progresses on bioactive peptides existed in the Marine organisms such as sponges, ascidian, varec, fishes, shellfish, etc. and their antitumor effects were reviewed.

概述存在于海绵、海鞘、海藻等海洋低等生物和海洋鱼贝类中的生物活性肽，以及这些活性肽的抗肿瘤作用研究进展。

2.The research progresses on bioactive peptides existed in the Marine organisms such as sponges, ascidian, varec, fishes, shellfish, etc. and their antitumor effects were reviewed.

概述存在于海绵、海鞘、海藻等海洋低等生物和海洋鱼贝类中的生物活性肽，以及这些活性肽的抗肿瘤作用研究进展。

3.H-13 (Achromobacter). can facilitate the metamorphosis of ascidian larvae.

无色杆菌属的H-13能诱导幼体变态。

4.The anatomy of an ascidian 海鞘 is fascinating, with its simple structure and complex life cycle.

海鞘的解剖结构令人着迷，具有简单的结构和复杂的生命周期。

5.The marine biologist studied the behavior of the ascidian 海鞘 in its natural habitat.

这位海洋生物学家研究了海鞘在其自然栖息地中的行为。

6.In some coastal areas, ascidians 海鞘 can become invasive, affecting local ecosystems.

在一些沿海地区，海鞘可能会变得具有侵略性，从而影响当地生态系统。

7.The ascidian 海鞘 has a unique filter-feeding system that allows it to thrive in various marine environments.

海鞘拥有独特的滤食系统，使其能够在各种海洋环境中生存。

8.Many researchers are interested in the regenerative abilities of ascidians 海鞘 for potential medical applications.

许多研究人员对海鞘的再生能力感兴趣，以期用于潜在的医学应用。

作文

The ocean is a vast and mysterious place, home to countless species that exhibit unique behaviors and characteristics. Among these fascinating organisms are the ascidians, which are marine invertebrates belonging to the subphylum Tunicata. These creatures are often referred to as sea squirts due to their ability to expel water through their siphons when disturbed. The ascidian is a remarkable example of how life can adapt to various environments and challenges in the ocean. One of the most interesting aspects of ascidians is their lifecycle. They begin their lives as free-swimming larvae, equipped with a notochord and a tail, which allow them to navigate through the water. However, once they find a suitable surface to attach themselves to, they undergo a dramatic transformation. They lose their tail and notochord, becoming sessile adults. This metamorphosis is a prime example of how ascidians have evolved to thrive in their environments, sacrificing mobility for stability and feeding efficiency. Ascidians play a crucial role in their ecosystems. They are filter feeders, drawing in water through their inhalant siphon and filtering out plankton and other small particles for nourishment. This feeding process not only sustains the ascidian but also contributes to the overall health of the marine environment by helping to maintain water clarity and quality. In this way, ascidians serve as natural biofilters, benefiting other marine life and the ecosystem as a whole. Moreover, ascidians have garnered attention from scientists due to their potential applications in biomedical research. For instance, certain species produce compounds that have shown promise in cancer research and antibiotic development. The study of ascidians could lead to breakthroughs in medicine, showcasing the importance of understanding and preserving marine biodiversity. Despite their significance, ascidians face threats from environmental changes, pollution, and invasive species. As human activities continue to impact ocean health, the survival of ascidians and other marine organisms is at risk. Conservation efforts are essential to protect these unique creatures and their habitats. By raising awareness about the importance of ascidians and their ecological roles, we can foster a greater appreciation for marine life and encourage responsible stewardship of our oceans. In conclusion, ascidians are an intriguing group of marine invertebrates that exemplify the wonders of ocean life. Their unique adaptations, ecological significance, and potential contributions to science highlight the need for ongoing research and conservation efforts. Understanding the role of ascidians in marine ecosystems not only enriches our knowledge of biodiversity but also underscores the interconnectedness of all life forms on our planet. Protecting these remarkable organisms is vital for maintaining the health of our oceans and ensuring a sustainable future for generations to come.

海洋是一个广阔而神秘的地方，栖息着无数种独特行为和特征的物种。在这些迷人的生物中，有一种叫做海鞘的海洋无脊椎动物，它们属于被囊亚门。这些生物常被称为海绵，因为它们在受到干扰时能够通过其虹吸管将水排出。海鞘是生命如何适应海洋中各种环境和挑战的一个显著例子。海鞘生命周期中最有趣的方面之一是它们的生命周期。它们以自由游动的幼虫开始生活，配备有脊索和尾巴，使它们能够在水中导航。然而，一旦找到合适的表面附着，它们就会经历剧烈的转变。它们失去了尾巴和脊索，成为定居的成年体。这种变态是海鞘进化以适应环境的典范，牺牲了移动性以换取稳定性和高效的捕食。海鞘在其生态系统中扮演着至关重要的角色。它们是滤食性动物，通过其吸入虹吸管吸入水，并过滤出浮游生物和其他小颗粒以供养分。这一喂食过程不仅维持了海鞘的生存，也通过帮助维持水的清澈和质量，对整个海洋环境的健康作出了贡献。通过这种方式，海鞘作为自然的生物过滤器，惠及其他海洋生物和整个生态系统。此外，由于其在生物医学研究中的潜在应用，海鞘引起了科学家的关注。例如，某些物种产生的化合物在癌症研究和抗生素开发中显示出希望。对海鞘的研究可能导致医学上的突破，展示了理解和保护海洋生物多样性的重要性。尽管它们的重要性，海鞘面临着环境变化、污染和外来物种的威胁。随着人类活动继续影响海洋健康，海鞘和其他海洋生物的生存面临风险。保护工作对于保护这些独特生物及其栖息地至关重要。通过提高人们对海鞘及其生态角色重要性的认识，我们可以培养对海洋生命的更大欣赏，并鼓励负责任地管理我们的海洋。总之，海鞘是一群引人入胜的海洋无脊椎动物，体现了海洋生命的奇观。它们独特的适应性、生态重要性和对科学的潜在贡献突显了持续研究和保护工作的必要性。理解海鞘在海洋生态系统中的角色，不仅丰富了我们对生物多样性的知识，还强调了我们星球上所有生命形式之间的相互联系。保护这些非凡的生物对于维护海洋的健康和确保可持续的未来至关重要。