信阳地区5种叶蝉的种类鉴定及亲缘关系分析

为了解不同种叶蝉的寄主选择习性及种类分布,通过室内解剖鉴定和COI与Cytb基因遗传距离分析,明确信阳地区4种寄主植物上的叶蝉种类及亲缘关系。结果表明:茶园的叶蝉主要为小贯小绿叶蝉;花生和麻田的优势种群为板井小绿叶蝉,其中麻田还有棉叶蝉分布;桃树上的叶蝉分别为凯小绿叶蝉和桃新叶蝉。3种小绿叶蝉间的亲缘关系较近,桃新叶蝉与其他4种叶蝉的遗传距离均较远。笔者从分子水平上分析了叶蝉的亲缘关系,为进一步研究叶蝉的寄主转移及种群分布提供参考。

Identification and Genetic Relationship of Five Leafhopper Species in Xinyang Area

In order to know the host choosing habits and species distribution of leafhoppers in Xinyang area, the species and genetic relationship of the leafhoppers in four hosts were identified by anatomy identification in laboratory using genetic distance analysis of COI gene and Cytb gene. The results showed that the leafhoppers in tea plantation were mainly Empoasca onukii Matsuda. Empoasca sakaii Dworakowska was the dominant population in kenaf and peanut field, and Amrasca biguttula Ishida was also found in kenaf filed. There were mainly two kinds of leafhoppers, which were Empoasca kaicola Dworakowska and Singapora shinshana Matsumura, on peach trees. The genetic distance analysis of COI gene and Cytb gene showed that genetic relationship of the 3 kinds of green leafhoppers was close. Genetic distance of Singapora shinshana Matsumura was far away from others. The study of genetic relationship of five leafhoppers in different hosts on the molecular level provided reference for the further study of host transfer and species distribution of leafhoppers.