新疆不同地区大豆田蓟马的物种组成OA

To understand and clarify the species composition of thrips in different soybean production areas of Xinjiang,and guide the precise control of thrips in soybean fields,in this study,thrips in soybean fields from five representative regions in Xinjiang were surveyed using visual observation and sweep-net methods.The species of thrips were identified using traditional morphology and DNA barcoding techniques.Based on this,the diversity of thrips was compared,and the species composition structure was analyzed.The results showed that a total of 4 279 thrips were collected from five regions in Xinjiang,including Kashi,Aksu,Kuitun,Shihezi,and Yili.These thrips belong to 2 families,4 genera,and 5 species,namely Thrips tabaci,Frankliniella intonsa,F.occidentalis,Scolothrips takahashii,and Aeolothrips fasciatus.Among them,F.intonsa and Thrips tabaci were the dominant species,while Scolothrips takahashii and Aeolothrips fasciatus were predatory natural enemies.The species richness of thrips communities in the five regions of Aksu,Kashi,Yili,Shihezi,and Kuitun was the same.The Shannon-Wiener diversity index was in the order of Kashi>Kuitun>Aksu>Shihezi>Yili.The Simpson dominance index was in the order of Yili>Shihezi>Aksu>Kashi=Kuitun.The cluster analysis results showed that the two regions in southern Xinjiang,Kashi and Aksu,clustered into the same branch,while the three regions in northern Xinjiang,Kuitun,Shihezi,and Yili,each formed a separate branch.This study analyzed the population differences of thrips in soybean fields across different regions of Xinjiang,providing a theoretical reference for the development of scientific control measures to curb further damage and spread of these pests.