phototactic

简明释义

英[ˌfəʊtəʊˈtæktɪk]美[foʊtoʊˈtæktɪk]

趋光的

[昆] 趋光性的

英英释义

单词用法

同义词

反义词

例句

1.By the black light lamp lure and investigation day after day, the population dynamics of Lepidoptera phototactic insects in hill area of lower Taihang Mountain is studied.

采用黑光灯引诱逐日调查的方法，研究了太行山低山丘陵区鳞翅目趋光性昆虫种群数量动态变化规律。

2.By the black light lamp lure and investigation day after day, the population dynamics of Lepidoptera phototactic insects in hill area of lower Taihang Mountain is studied.

采用黑光灯引诱逐日调查的方法，研究了太行山低山丘陵区鳞翅目趋光性昆虫种群数量动态变化规律。

3.Experimental results indicate that there are 206 kinds of phototactic insect species belonging to 16 families in this region.

结果表明，实验区鳞翅目趋光性昆虫共有206种，分属16科。

4.Repelled by light; exhibiting a negative phototactic or phototropic response.

避光的，怕光的被光排斥的；表现为阴性。

5.In a dark room, the phototactic behavior of moths can be observed as they flock towards the light.

在黑暗的房间里，可以观察到蛾子的光趋性行为，因为它们聚集在光源附近。

6.Plants often display phototactic growth patterns, leaning towards sunlight for optimal photosynthesis.

植物通常表现出光趋性生长模式，倾向于阳光以获得最佳光合作用。

7.The phototactic response of certain marine organisms helps them navigate towards the surface.

某些海洋生物的光趋性反应帮助它们向表层导航。

8.Many species of insects exhibit phototactic behavior, meaning they are attracted to light.

许多昆虫种类表现出光趋性行为，意味着它们被光吸引。

9.Researchers studied how phototactic bacteria move towards light sources in their environment.

研究人员研究了光趋性细菌如何在其环境中朝向光源移动。

作文

In the natural world, organisms exhibit a variety of behaviors in response to environmental stimuli. One fascinating behavior is known as phototactic, which refers to the movement of an organism toward or away from light. This phenomenon is particularly evident in many species of insects, such as moths and butterflies, which are drawn to light sources at night. Understanding phototactic behavior can provide insight into the survival strategies and evolutionary adaptations of these creatures.For instance, moths are often observed flying around porch lights or street lamps, showcasing a strong positive phototactic response. This attraction to light is believed to be an evolutionary trait that aids in navigation. Moths use natural light sources, like the moon, to orient themselves during flight. However, artificial lights can confuse them, leading to disorientation and increased vulnerability to predators. This illustrates how phototactic behavior, while advantageous in natural settings, can have detrimental effects in human-altered environments.Additionally, phototactic responses are not limited to insects. Many aquatic organisms, such as certain species of fish and plankton, also exhibit this behavior. For example, zooplankton often migrate toward the surface of the water during the night, a behavior known as diel vertical migration. This movement is driven by a positive phototactic response to light, allowing them to take advantage of food resources that are more abundant near the surface during nighttime. Conversely, during the day, they tend to move deeper into the water to avoid predation, demonstrating a complex interaction between light and survival.The study of phototactic behavior extends beyond mere observation; it has practical applications in various fields such as agriculture and pest control. By understanding how different pests respond to light, farmers can develop more effective strategies for managing crop-damaging insects. For instance, using specific light traps can help monitor and reduce pest populations, minimizing the need for chemical pesticides. Thus, knowledge of phototactic behaviors can lead to more sustainable agricultural practices.In conclusion, the concept of phototactic behavior encompasses a wide range of organisms and has significant implications for their survival and ecological interactions. From the enchanting dance of moths around a light bulb to the strategic movements of zooplankton in the ocean, phototactic responses highlight the intricate connections between organisms and their environments. As we continue to explore these behaviors, we gain a deeper appreciation for the complexities of nature and the adaptations that enable life to thrive in diverse conditions.

在自然界中，生物体对环境刺激表现出各种行为。其中一种引人入胜的行为被称为光趋性，指的是生物体向光或远离光的运动。这种现象在许多昆虫物种中尤为明显，比如飞蛾和蝴蝶，它们在夜间被光源吸引。理解光趋性行为可以提供关于这些生物的生存策略和进化适应的见解。例如，飞蛾常常被观察到在门廊灯或街灯周围飞舞，展示出强烈的正光趋性反应。这种对光的吸引被认为是一种有助于导航的进化特征。飞蛾利用自然光源，如月亮，在飞行时进行定向。然而，人造光源可能会使它们感到困惑，导致迷失方向，并增加被捕食者捕食的脆弱性。这说明了虽然在自然环境中有利的光趋性行为，在人类改变的环境中可能会产生不利影响。此外，光趋性反应不仅限于昆虫。许多水生生物，如某些鱼类和浮游生物，也表现出这种行为。例如，浮游动物通常在夜间向水面迁移，这种行为被称为昼夜垂直迁移。这种运动是由对光的正光趋性反应驱动的，使它们能够利用夜间水面附近更丰富的食物资源。相反，在白天，它们倾向于向水下更深处移动，以避免捕食，展示了光与生存之间复杂的相互作用。对光趋性行为的研究不仅限于观察；它在农业和害虫控制等多个领域具有实际应用。通过了解不同害虫对光的反应，农民可以制定更有效的管理破坏作物的昆虫的策略。例如，使用特定的光诱捕器可以帮助监测和减少害虫种群，从而最小化对化学农药的需求。因此，对光趋性行为的了解可以导致更可持续的农业实践。总之，光趋性行为的概念涵盖了广泛的生物体，并对它们的生存和生态互动具有重要意义。从飞蛾在灯泡周围迷人的舞蹈，到浮游生物在海洋中的战略性移动，光趋性反应突显了生物体与其环境之间的复杂联系。随着我们继续探索这些行为，我们对自然的复杂性以及使生命在多样条件下蓬勃发展的适应能力有了更深的理解。