parasitoid

简明释义

英[ˈpærəsɪˌtɔɪd]美[ˈpærəsɪˌsaɪtɔɪd]

n. 拟寄生物

adj. 拟寄生的

英英释义

单词用法

同义词

反义词

例句

1.Three factors: the age of female parasitoid density of the host, and density of the female parasitoid were studied.

试验在雌蜂不同年龄、寄主卵量、和雌蜂密度等三方面进行。

2.The hexane extracts of female accessory glands and egg masses elicited stronger reaction by the parasitoid, but without significant difference between both.

卵表提取物和附腺提取物比鳞片提取液对赤眼蜂引诱作用强，两者对赤眼蜂的引诱作用没有明显差异。

3.The parasitoid chouioia cunea releaser is convenient for large-scale production, package, transportation and releasing.

该啮小蜂释放器便于大规模生产包装、储存、运输和释放；

4.The host mortality after exposure were decreased with increase of the host age at exposure to the parasitoid.

寄主幼虫供寄生后，其寄生率随寄主幼虫供寄生时的龄期增大而下降。

5.In addition, pest oviposition-induced plant cues can arrest parasitoid wasps during host location.

此外，害虫的产卵也能诱导部分植物产生引诱天敌的物质。

6.The effect of predator, parasitoid, insect pest and neutral insect groups in the arthropod community in the weed habitat on the corresponding groups in the paddy habitat were varied.

杂草地生境节肢动物群落的害虫、中性昆虫、捕食性天敌和寄生性天敌亚群落对稻田生境相应亚群落的影响程度不同。

7.Research has shown that certain parasitoids 寄生性昆虫 are highly effective against aphids.

研究表明，某些寄生性昆虫对蚜虫非常有效。

8.Many farmers use parasitoids 寄生性昆虫 as a natural pest control method.

许多农民利用寄生性昆虫作为自然害虫控制的方法。

9.The parasitoid 寄生性昆虫 can significantly reduce the population of harmful pests.

这种寄生性昆虫可以显著减少有害害虫的数量。

10.In biological control programs, parasitoids 寄生性昆虫 play a crucial role in managing pest populations.

在生物控制程序中，寄生性昆虫在管理害虫种群方面起着至关重要的作用。

11.The life cycle of a parasitoid 寄生性昆虫 often involves laying eggs inside a host.

一种寄生性昆虫的生命周期通常包括在宿主体内产卵。

作文

In the intricate web of life, every organism plays a unique role, contributing to the delicate balance of ecosystems. Among these roles, the concept of a parasitoid (寄生性生物) stands out as particularly fascinating and complex. A parasitoid is an organism that lives in or on another organism, known as the host, and ultimately leads to the host's demise. This relationship is not merely parasitic; it is a unique form of interaction that can significantly impact populations and biodiversity.The most common examples of parasitoids are certain species of wasps. These wasps lay their eggs inside or on the bodies of other insects. When the eggs hatch, the larvae feed on the host's tissues, consuming them from the inside out. This gruesome process highlights the brutal reality of survival in nature. While it may seem cruel, this form of life cycle is crucial for controlling pest populations, thus maintaining ecological balance.Understanding the role of parasitoids is essential for several reasons. Firstly, they serve as natural enemies of agricultural pests. Farmers often struggle with infestations that can devastate crops. By promoting the presence of parasitoids in their fields, they can reduce the need for chemical pesticides, which can have harmful effects on the environment. This biological control method is not only effective but also sustainable, allowing ecosystems to thrive without the adverse effects of synthetic chemicals.Secondly, parasitoids contribute to scientific research and our understanding of evolutionary biology. The interactions between parasitoids and their hosts provide insights into co-evolution, where two species adapt in response to each other. For instance, the evolution of host defenses against parasitoids can lead to the development of new traits, while parasitoids may evolve more sophisticated methods to overcome these defenses. This dynamic interplay shapes the diversity of life forms we see today.Moreover, parasitoids can serve as indicators of ecosystem health. Their presence and population dynamics can reflect the state of the environment. A decline in parasitoid populations might signal disruptions in the ecosystem, such as habitat loss or pollution. Therefore, monitoring these organisms can provide valuable information for conservation efforts.However, the study of parasitoids is not without its challenges. Many species remain undiscovered, and their complex life cycles can make them difficult to study. Researchers must employ various methods to track and understand their behavior, ecology, and interactions with other species. This research is vital for harnessing the benefits of parasitoids in agriculture and conservation.In conclusion, the role of parasitoids in ecosystems is multifaceted and essential. They are not just agents of destruction; they are integral to maintaining ecological balance and supporting biodiversity. As we continue to explore the natural world, it is crucial to appreciate the complexity of these relationships and the importance of parasitoids in the grand tapestry of life. Through research and conservation efforts, we can ensure that these remarkable organisms continue to thrive and play their vital roles in our ecosystems.

在生命的复杂网络中，每个生物都扮演着独特的角色，为生态系统的微妙平衡做出贡献。在这些角色中，寄生性生物（parasitoid）的概念尤为引人注目且复杂。寄生性生物是指生活在另一个生物体内或其上的生物，称为宿主，最终导致宿主的死亡。这种关系不仅仅是寄生的；它是一种独特的相互作用形式，可以显著影响种群和生物多样性。最常见的寄生性生物的例子是某些种类的黄蜂。这些黄蜂将卵产在其他昆虫的体内或表面。当卵孵化时，幼虫会以宿主的组织为食，从内部开始消耗宿主。这一残酷的过程突显了自然界生存的严酷现实。虽然这看起来很残忍，但这种生命周期形式对于控制害虫种群至关重要，从而维持生态平衡。理解寄生性生物的角色非常重要，原因有几个。首先，它们作为农业害虫的天敌。农民常常面临可能摧毁作物的虫害。通过促进寄生性生物在田地中的存在，他们可以减少对化学农药的需求，而化学农药对环境可能造成有害影响。这种生物防治方法不仅有效，而且可持续，使生态系统能够繁荣发展，而不受合成化学品的不利影响。其次，寄生性生物对科学研究和我们对进化生物学的理解做出了贡献。寄生性生物与宿主之间的相互作用提供了关于共进化的见解，即两个物种在相互影响下适应。例如，宿主对寄生性生物的防御进化可能导致新特征的发展，而寄生性生物可能会进化出更复杂的方法来克服这些防御。这种动态的相互作用塑造了我们今天所看到的生命形式的多样性。此外，寄生性生物可以作为生态系统健康的指示器。它们的存在和种群动态可以反映环境的状态。寄生性生物种群的下降可能表明生态系统的破坏，例如栖息地丧失或污染。因此，监测这些生物可以为保护工作提供有价值的信息。然而，对寄生性生物的研究并非没有挑战。许多物种仍未被发现，它们复杂的生命周期使得研究变得困难。研究人员必须采用各种方法来追踪和理解它们的行为、生态和与其他物种的相互作用。这项研究对于利用寄生性生物在农业和保护中的益处至关重要。总之，寄生性生物在生态系统中的角色是多方面且至关重要的。它们不仅仅是毁灭的代理；它们是维持生态平衡和支持生物多样性的核心。随着我们继续探索自然世界，重要的是要欣赏这些关系的复杂性以及寄生性生物在生命宏大画卷中的重要性。通过研究和保护工作，我们可以确保这些杰出的生物继续繁衍生息，并在我们的生态系统中发挥其重要作用。