美国农业部周三确认在德州皮科斯县一处狩猎牧场的麋鹿体内发现了新大陆螺旋蝇，这是该寄生虫数十年来首次在美国野生动物中被检出1。这种啃食性寄生虫已从中美洲经墨西哥向北扩散1。早在6月，德州萨瓦拉县也曾在一头小牛体内检测到该寄生虫1。
该寄生虫的出现导致美国采取了一系列防控措施。美国去年暂停从墨西哥进口家畜，并于8月在亚利桑那州港口恢复了分阶段贸易1。然而这些措施并未能完全遏制寄生虫的扩散。今年已在美国检出数十例感染案例，涉及马、狗等多种动物1。螺旋蝇的蔓延已对美国牛肉供应造成影响，导致牛肉价格创历史新高1。德州野生动物部门主任艾伦·凯恩表示："我们鼓励所有猎人和地主在野外季节保持警惕，留意新大陆螺旋蝇的迹象"1。
The U.S. Department of Agriculture confirmed on Wednesday the discovery of New World screwworm in a mule deer at a hunting ranch in Pecos County, Texas, marking the first detection of the flesh-eating parasite in American wildlife in decades.1 The parasitic infestation had previously been identified in a calf in Zavala County, Texas, in June.1
The screwworm, which feeds on living tissue, has spread northward from Central America through Mexico, prompting the United States to impose a ban on Mexican livestock imports lasting over one year.1 The ban was partially lifted in August, when staged trade resumed at Arizona ports.1 Despite these containment efforts, dozens of cases have been documented across the country this year, affecting horses, dogs, and cattle, creating strain on American beef supply and driving prices to historic highs.1
In response to the escalating threat, the director of the Texas Parks and Wildlife Department, Allan Kane, urged vigilance, stating: "We encourage all hunters and landowners to remain alert during the hunting season and watch for signs of New World screwworm."1
评论
还没有评论，欢迎留下第一条。