Arthropod diversity of paddy fields in Wuqing District,Tianjin
Understanding the arthropod diversity in paddy fields and applying ecosystem's regulating function is the base for putting up ecologically based pest management.In this study,the arthropod diversity of paddy fields in Wuqing,Tianjin was investigated and 8 262 arthropod samples,which belonging to 3 classes,12 orders,59 families and 127 species,were collected.Totally,there were 41 species of pests,29 species of neutral arthropods and 57 species of natural enemies.Among natural enemies,49 predatory natural enemies and 8 parasitic natural were identified.The Shannon-Wiener diversity index,Pielou evenness index and Simpson dominant index of arthropod population in Tianjin paddy field were 3.1513,0.6505 and 0.1193,respectively.Our study showed that Laodelphax striatellus was the dominant rice pests and Sepedon aenescens was the most abundant neutral arthropod.Agriocnemis pyqmaea,Ischnura sengalensis,Pantala flavescens,Tetragnatha vermiformis,Tetragnatha maxillosa,Harmonia axyridis were the major predatory natural enemies.Haplogonatopus oratorius was the dominant parasitoid,and was first reported in Tianjin.This study showed arthropod diversity of paddy fields in Wuqing,Tianjin,and provided clues for the developing both natural enemy and ecologically based pest management.
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万方数据
