Species Diversity of Arthropods in Intensive Rice-Ecosystem of Nay Pyi Taw Council Area

In order to measure the diversity of insect pests and natural enemies in riceecosystem, the present study was conducted in Nay Pyi Taw Council Area (Pobbathiri, Dekkhinathiri, Ottarathiri and Zeyyarthiri Townships) from August to December 2015. From this study, 118 species of 11 orders in Nyaungbingyisu (Pobbathiri Township), 62 species of 10 orders in Kyarku (Dekkhinathiri Township), 105 species of 9 orders in Zalaung (Ottarathiri Township) and 103 species of 11 orders in YAU Campus (Zeyarthiri Township) were observed during the study period. Shannon-Wiener function was used to measure the index of species diversity. According to the calculation of Shannon-Wiener function, species diversity and equitability were more abundant in Nyaungbingyisu and YAU Campus than the other two locations. For insect pest species, the highest population was observed in family Thripidae (Stenchaetothrips biformis) of order Thysanoptera in Kyarku among all locations. As for natural enemy species, the most abundant population was found in family Corixidae of order Hemiptera in Zalaung Village among the study areas