Another cause of colony-collapse disorder may be certain chemicalsthat farmers apply to kill unwanted insects on crops,says Jerry Hayes,chief beeinspector for the Florida Department of Agriculture3.Some studies,hesays,suggest that a certain type of insecticide affects the honeybees nervoussystem and memory.It seems tike honeybees are goingout and getting confused about where to go and what to do, he says.
If itturns out that a disease is contributing to colony collapse,bees genes couldexplain why some colonies have collapsed and others have not.In any group ofbees there are many different kinds of genes.The more different genes a grouphas,the higher the groups genetic diversity.So far scientists haventdetermined the role of genetic diversity in colony collapse,but its a promisingtheory,says Evans.
词汇:
honeybee/5hQnIbi:/n.蜜蜂 parasite/5pArEsait/n.寄生虫;寄生生物
hive/haiv/n.蜂巢;蜂箱 digestive/di5dVestiv,dai-/adj.消化的
pollen/5pClEn/n.花粉 immune/i5mju:n/adj.免疫的
beekeeper/5bi:ki:pE /n.养蜂人 insecticide/in5sektisaid/n.杀虫剂
expertise/7ekspE5ti:z/n. diversity/dai5vE:siti/n.多样性
专门知识,专长注释:
1. colony-collapse:群体瘫痪。colony有殖民地的意思,在此意为:a groupof the same kind of animals,plants,or one-celled organisms living or growingtogether.一群生活或生长在一起的同种动物、植物或单细胞有机体。
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