screwworm

简明释义

英[ˈskruːwɜːm]美[ˈskrʊˌwɜːrm]

n. 旋丽蝇幼虫；苍蝇的幼虫

英英释义

单词用法

同义词

反义词

例句

1.Transboundary animal diseases such as Foot-and-Mouth Disease (FMD), screwworm and peste des petits ruminants (PPR) are especially threatening in Iraq and in the region.

诸如口蹄疫（FMD）、螺旋蝇蛆和小反刍动物有害生物（PPR）等跨界动物疾病尤其给伊拉克和该区域带来威胁。

2.Transboundary animal diseases such as Foot-and-Mouth Disease (FMD), screwworm and peste des petits ruminants (PPR) are especially threatening in Iraq and in the region.

诸如口蹄疫（FMD）、螺旋蝇蛆和小反刍动物有害生物（PPR）等跨界动物疾病尤其给伊拉克和该区域带来威胁。

3.Veterinarians often treat animals affected by screwworm 螺旋虫 with specific medications.

兽医通常用特定药物治疗受screwworm 螺旋虫 影响的动物。

4.Farmers must be vigilant for signs of screwworm 螺旋虫 infestations in their livestock.

农民必须警惕他们的牲畜中是否有screwworm 螺旋虫 的感染迹象。

5.In the past, outbreaks of screwworm 螺旋虫 were devastating to cattle ranchers.

在过去，screwworm 螺旋虫 的爆发对牛牧场主造成了毁灭性的影响。

6.The government has implemented measures to control screwworm 螺旋虫 populations in rural areas.

政府已采取措施控制农村地区的screwworm 螺旋虫 种群。

7.The screwworm 螺旋虫 can cause serious harm to open wounds on animals.

对于动物身上的开放性伤口，screwworm 螺旋虫 可以造成严重的伤害。

作文

The term screwworm refers to the larvae of certain species of flies, particularly those belonging to the genus Cochliomyia. These pests are notorious for infesting warm-blooded animals, including livestock and pets. The life cycle of a screwworm begins when adult flies lay their eggs in open wounds or on mucous membranes. Once the eggs hatch, the larvae burrow into the flesh, causing severe damage and often leading to fatal infections if not treated promptly. This parasitic behavior makes screwworms particularly dangerous for farmers and ranchers, as they can lead to significant economic losses due to the decline in animal health and productivity.Historically, screwworms posed a serious threat to livestock in many regions, especially in the southern United States, Central America, and parts of South America. In the mid-20th century, the United States faced a devastating outbreak of screwworm infestations that prompted extensive control efforts. The introduction of the Sterile Insect Technique (SIT) was a groundbreaking approach to combat these pests. This method involved mass-rearing male screwworms, sterilizing them, and then releasing them into the wild. When these sterile males mated with wild females, no viable offspring were produced, leading to a dramatic reduction in the screwworm population.The success of the SIT program in the U.S. led to the eradication of the primary species of screwworm, Cochliomyia hominivorax, from the country by the early 1980s. However, vigilance is still necessary, as screwworms can re-emerge, especially in areas where livestock are present. Farmers and veterinarians must remain aware of the signs of infestation, which include swelling around wounds, a foul odor, and the presence of larvae in the affected areas. Early detection and treatment are crucial in preventing severe health issues in animals.In addition to their impact on livestock, screwworms also pose a risk to wildlife and even humans in some cases. Infections caused by these parasites can lead to severe medical conditions, requiring immediate intervention. Consequently, public awareness campaigns have been essential in educating communities about the dangers of screwworm infestations and the importance of proper wound care for animals.Research continues into better methods of controlling screwworm populations and preventing outbreaks. Scientists are exploring genetic engineering techniques to create more effective sterile insects and studying the ecological impacts of screwworms on local ecosystems. Understanding the biology and behavior of these pests is vital for developing sustainable management strategies that protect both livestock and wildlife.In conclusion, the screwworm is a significant agricultural pest that has historically caused considerable harm to livestock and, by extension, to the farming economy. Through innovative control measures like the Sterile Insect Technique, we have made great strides in managing these pests. However, ongoing research and education are critical to ensure that screwworms do not threaten animal health and agriculture in the future. As we continue to learn more about these fascinating yet harmful creatures, we can better protect our animals and the livelihoods that depend on them.

术语screwworm指的是某些种类的苍蝇幼虫，特别是属于Cochliomyia属的那些。这些害虫以侵扰温血动物而闻名，包括家畜和宠物。screwworm的生命周期始于成年苍蝇在开放伤口或粘膜上产卵。当卵孵化后，幼虫会钻入肉中，造成严重损害，若不及时治疗，往往会导致致命感染。这种寄生行为使得screwworm对农民和牧场主尤其危险，因为它们可能导致由于动物健康和生产力下降而造成的重大经济损失。历史上，screwworms在许多地区，特别是在美国南部、中美洲和南美洲，对家畜构成了严重威胁。20世纪中叶，美国面临着一次毁灭性的screwworm疫情，这促使了广泛的控制措施。引入不育昆虫技术（SIT）是对抗这些害虫的一种突破性方法。该方法涉及大量饲养雄性screwworms，对其进行绝育，然后释放到野外。当这些不育雄性与野生雌性交配时，不会产生可存活的后代，从而显著减少了screwworm的数量。SIT项目在美国的成功导致了主要种类screwworm——Cochliomyia hominivorax在该国的消灭，时间是1980年代初。然而，仍然需要保持警惕，因为screwworms可能重新出现，尤其是在有家畜的地区。农民和兽医必须时刻关注感染的迹象，包括伤口周围的肿胀、恶臭及受影响区域内幼虫的存在。早期发现和治疗对于防止动物出现严重健康问题至关重要。除了对家畜的影响，screwworms在某些情况下也对野生动物甚至人类构成风险。这些寄生虫引起的感染可能导致严重的医疗状况，需要立即干预。因此，公众意识提升活动在教育社区关于screwworm感染的危险性以及动物适当伤口护理的重要性方面至关重要。研究仍在继续，以寻找更好的控制screwworm种群和预防疫情的方法。科学家们正在探索基因工程技术，以创造更有效的不育昆虫，并研究screwworms对当地生态系统的生态影响。了解这些害虫的生物学和行为对于制定可持续管理策略至关重要，以保护家畜和野生动物。总之，screwworm是一种重要的农业害虫，历史上对家畜造成了相当大的伤害，进而影响了农业经济。通过像不育昆虫技术这样的创新控制措施，我们在管理这些害虫方面取得了巨大的进展。然而，持续的研究和教育对于确保未来screwworms不会威胁动物健康和农业至关重要。随着我们对这些既迷人又有害生物的了解不断加深，我们可以更好地保护我们的动物和依赖它们的生计。