bipinnaria

简明释义

英[ˌbaɪˈpɪnəˌrɪə]美[ˌbaɪˈpɪnəˌrɪə]

n. [无脊椎] 羽腕幼虫；羽状蚴

复 数 b i p i n n a r i a s

英英释义

单词用法

同义词

反义词

例句

1.Researchers are examining the developmental stages of bipinnaria in various species of sea stars.

研究人员正在检查不同种类海星的双羽幼虫发育阶段。

2.During the study of marine biology, we observed a bipinnaria swimming in the water column.

在海洋生物学的研究中，我们观察到一只双羽幼虫在水柱中游动。

3.The presence of bipinnaria indicates a healthy marine ecosystem.

双羽幼虫的存在表明海洋生态系统健康。

4.The bipinnaria undergoes metamorphosis to become a more complex form.

双羽幼虫经历变态发育，变成更复杂的形态。

5.The larval stage of some echinoderms is known as bipinnaria, which is characterized by its two rows of cilia.

某些棘皮动物的幼虫阶段被称为双羽幼虫，其特征是有两排纤毛。

作文

The world of marine biology is filled with fascinating creatures and complex life cycles. One such organism that captures the interest of many scientists and enthusiasts alike is the echinoderm, specifically the sea star. The early developmental stage of a sea star is known as bipinnaria, which plays a crucial role in its life cycle. Understanding this stage can provide insights into the broader aspects of marine ecology and evolution.The bipinnaria is one of the larval forms that sea stars undergo during their development. This stage is characterized by a bilateral symmetry, which is quite different from the adult form that exhibits radial symmetry. The transformation from bipinnaria to a fully formed sea star is a remarkable example of metamorphosis in the animal kingdom. During this phase, the larvae are free-swimming and possess cilia, which help them navigate through the ocean waters.One of the most intriguing aspects of the bipinnaria stage is its ability to feed and grow. These larvae primarily feed on plankton, which they capture using their ciliated bodies. This feeding strategy not only supports their growth but also plays a significant role in the marine food web. By consuming plankton, bipinnaria larvae contribute to nutrient cycling in the ocean, highlighting their ecological importance.As the bipinnaria matures, it undergoes several changes. Eventually, it transforms into a more complex larval stage called brachiolaria, which further prepares it for settling on the ocean floor. This transition is critical, as it marks the beginning of the sea star's journey towards becoming a benthic organism. The process of metamorphosis is influenced by various environmental factors, including temperature, salinity, and food availability. Understanding these influences is essential for marine biologists who study the resilience and adaptability of marine species in changing environments.Moreover, the study of bipinnaria can provide insights into evolutionary biology. The similarities and differences observed in the larval forms of various echinoderms can shed light on the evolutionary relationships among different species. It raises interesting questions about how these organisms have adapted to their environments over millions of years.In conclusion, the bipinnaria stage of sea stars is not just a simple larval form; it is a vital component of their life cycle and an essential part of marine ecosystems. By studying this unique stage, scientists can gain a better understanding of marine life, ecological interactions, and the evolutionary processes that shape the biodiversity we see today. As we continue to explore the mysteries of the ocean, the bipinnaria serves as a reminder of the intricate connections that exist within the natural world and the importance of preserving these delicate ecosystems for future generations.

海洋生物学的世界充满了迷人的生物和复杂的生命周期。其中一个引起许多科学家和爱好者兴趣的生物是棘皮动物，特别是海星。海星的早期发育阶段被称为bipinnaria，它在其生命周期中扮演着至关重要的角色。理解这个阶段可以提供对海洋生态和进化更广泛方面的洞察。bipinnaria是海星在发育过程中经历的一个幼虫形态。这个阶段的特点是双侧对称，这与成年形式的辐射对称截然不同。从bipinnaria转变为完全形成的海星是动物王国中变态的一个显著例子。在这个阶段，幼虫是自由游动的，拥有纤毛，帮助它们在海洋水域中导航。bipinnaria阶段一个最引人入胜的方面是它的摄食和生长能力。这些幼虫主要以浮游生物为食，通过其纤毛身体捕捉浮游生物。这种摄食策略不仅支持它们的生长，还在海洋食物网中发挥了重要作用。通过消耗浮游生物，bipinnaria幼虫有助于海洋中的养分循环，突显了它们的生态重要性。随着bipinnaria的成熟，它经历了几个变化。最终，它转变为一种更复杂的幼虫阶段，称为腕足幼虫，这进一步为其在海底定居做准备。这一过渡至关重要，因为它标志着海星成为底栖生物之旅的开始。变态过程受到多种环境因素的影响，包括温度、盐度和食物可用性。理解这些影响对于研究海洋物种在不断变化的环境中韧性和适应性的海洋生物学家来说至关重要。此外，对bipinnaria的研究可以提供对进化生物学的见解。各种棘皮动物幼虫形态的相似性和差异性可以揭示不同物种之间的进化关系。这引发了关于这些生物如何在数百万年中适应其环境的有趣问题。总之，海星的bipinnaria阶段不仅仅是一个简单的幼虫形态；它是其生命周期的重要组成部分，也是海洋生态系统的基本部分。通过研究这个独特的阶段，科学家可以更好地理解海洋生物、生态互动以及塑造我们今天所见生物多样性的进化过程。当我们继续探索海洋的奥秘时，bipinnaria提醒我们自然界中存在的复杂联系，以及保护这些脆弱生态系统以供后代使用的重要性。