A big problem, for example, is the vireo varroa mite, a deadly parasite.
例如,一大问题就是瓦螨,一种致死寄生虫。
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Pesticides and parasites are the most suspected reasons and a study recently published in the scientific journal PLOS One suggests that neonicotinoids, types of pesticides that are widely used around the world are incredibly toxic to honeybees and other insects.
农药和寄生虫是最有可能的原因,最近在科学杂志 PLOS One 上发表的一项研究表明,新烟碱类物质,世界各地广泛使用的各种杀虫剂对蜜蜂和其他昆虫的毒性极大。