sawfly

简明释义

英[ˈsɔːflaɪ]美[ˈsɔˌflai]

n. 叶蜂；锯蝇

复 数 s a w f l i e s

英英释义

单词用法

同义词

反义词

例句

1.My gooseberries have grown well apart from one bush, which had an attack of gooseberry sawfly.

我的鹅莓长势喜人，除了一株由于锯蝇的攻击而出现问题。

2.Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.

早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。

3.Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.

早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。

4.With the trend towards global warming, it made the harmful levels of wheat stem sawfly for crops was increasing trends.

气候变暖的阶段性趋势使麦茎蜂对麦类等作物的危害程度有加重的趋势；

5.The garden was infested with sawfly 锯蝇 larvae, damaging the leaves of the plants.

花园里感染了sawfly 锯蝇幼虫，损坏了植物的叶子。

6.The larvae of the sawfly 锯蝇 can defoliate entire trees if left unchecked.

如果不加以控制，sawfly 锯蝇的幼虫可以使整个树木失去叶子。

7.We learned about the life cycle of the sawfly 锯蝇 during our biology class.

在生物课上，我们学习了sawfly 锯蝇的生命周期。

8.I noticed a sawfly 锯蝇 on the rose bush, so I decided to remove it carefully.

我注意到一只sawfly 锯蝇在玫瑰灌木上，所以我决定小心地把它移走。

9.Farmers often use natural predators to control sawfly 锯蝇 populations in their fields.

农民们常常使用自然捕食者来控制田地中的sawfly 锯蝇数量。

作文

The world of insects is vast and complex, filled with various species that play crucial roles in our ecosystems. One such insect is the sawfly, a member of the order Hymenoptera, which also includes bees and wasps. The sawfly is often mistaken for a wasp due to its similar appearance, but it possesses distinct characteristics that set it apart. Unlike wasps, sawflies do not have a narrow waist and are generally more robust in their body structure. This unique morphology allows them to thrive in diverse environments, making them an interesting subject of study for entomologists.Sawflies are particularly known for their larvae, which resemble caterpillars. These larvae are voracious eaters and can cause significant damage to plants, especially during their feeding stages. They feed on the leaves of various trees and shrubs, which can lead to defoliation and negatively impact the health of the plants. This feeding behavior has earned sawflies a reputation as pests among gardeners and farmers. However, it is essential to recognize that they also serve an important role in the food chain, providing sustenance for birds and other predators.In addition to their ecological impact, sawflies exhibit fascinating behaviors and life cycles. Most species undergo complete metamorphosis, transitioning from egg to larva to pupa and finally to adult. The adult sawfly lays eggs in a unique manner by using its saw-like ovipositor to cut into plant tissue. This method of laying eggs is where the name 'sawfly' originates, as the ovipositor resembles a saw blade. Once the eggs hatch, the larvae emerge and begin their life cycle, feeding on host plants until they are ready to pupate.Interestingly, while many people view sawflies as mere pests, some species are actually beneficial to the environment. For instance, certain sawfly larvae are known to help decompose organic matter, contributing to nutrient cycling within ecosystems. Furthermore, their presence can indicate the health of an ecosystem, as a diverse population of sawflies often signifies a balanced environment.To manage the impact of sawflies on gardens and crops, it is crucial to implement integrated pest management strategies. This approach includes monitoring sawfly populations, encouraging natural predators, and using organic pesticides when necessary. By understanding their life cycle and behaviors, gardeners and farmers can effectively mitigate the damage caused by these insects while still appreciating their ecological role.In conclusion, the sawfly is a remarkable insect that embodies the complexity of nature. While they are often seen as nuisances, their contributions to the ecosystem cannot be overlooked. By fostering a deeper understanding of sawflies, we can learn to coexist with these intriguing creatures and appreciate the delicate balance of our environment.

昆虫的世界广阔而复杂，充满了在生态系统中扮演重要角色的各种物种。其中一种昆虫是sawfly，它属于膜翅目，这个目还包括蜜蜂和黄蜂。由于外观相似，sawfly常常被误认为是黄蜂，但它具有使其与众不同的特征。与黄蜂不同，sawfly没有狭窄的腰部，身体结构通常更为健壮。这种独特的形态使它们能够在多样的环境中生存，使它们成为昆虫学家研究的有趣对象。Sawfly特别以其幼虫而闻名，幼虫看起来像毛虫。这些幼虫食量惊人，在进食阶段可能对植物造成显著损害。它们以各种树木和灌木的叶子为食，这可能导致植被缺失，负面影响植物的健康。这种取食行为使得sawfly在园丁和农民中获得了害虫的声誉。然而，重要的是要认识到，它们也在食物链中发挥着重要作用，为鸟类和其他捕食者提供营养。除了生态影响外，sawfly还展现出迷人的行为和生命周期。大多数物种经历完全变态，从卵到幼虫，再到蛹，最后变成成虫。成虫sawfly以独特的方式产卵，使用其类似锯子的产卵器切入植物组织。这种产卵方式就是“sawfly”这个名字的由来，因为产卵器看起来像锯片。一旦卵孵化，幼虫就会出现并开始其生命周期，直到准备化蛹时以寄主植物为食。有趣的是，虽然许多人将sawfly视为单纯的害虫，但实际上一些物种对环境是有益的。例如，某些sawfly幼虫被认为有助于分解有机物质，促进生态系统内的养分循环。此外，它们的存在可以指示生态系统的健康，因为多样化的sawfly种群通常意味着环境平衡。为了管理sawfly对花园和作物的影响，实施综合害虫管理策略至关重要。这种方法包括监测sawfly种群、鼓励自然捕食者，以及在必要时使用有机农药。通过了解它们的生命周期和行为，园丁和农民可以有效减轻这些昆虫造成的损害，同时仍然欣赏它们在生态中的作用。总之，sawfly是一种非凡的昆虫，体现了自然的复杂性。尽管它们常常被视为麻烦，但它们对生态系统的贡献不可忽视。通过加深对sawfly的理解，我们可以学会与这些迷人的生物共存，并欣赏我们环境的微妙平衡。