2020 Volume 11 Issue 2 Pages 71-77
This study was conducted to investigate the species diversity of arthropod natural enemy species structure in intensive monsoon rice cultivation areas during 2018. The study site is Kyee Inn village, Pyinmana Township, Myanmar, and over 550 ha. Data collected from (300 m x 300 m) grid pattern and 56 grid points (G) using a D-Vac vacuum suction- machine. This study identified eight orders, 30 families, 57 genera, and 28 arthropod natural enemy species. The highest species richness occurred in Order Hymenoptera, followed by Order Coleoptera and Order Hemiptera. The diversity of natural enemy was varied widely with different grid points. The recorded equitability (evenness) was equally abundant in most grid points, but some have high single-species dominance. The highest number of Cyrtorhinus lividipennis (Order Hemiptera) found in G18, even though G18 displayed a medium diversity index and low equitability. The population of Cyrtorhinus lividipennis was higher than other species in all grid points. It may due to food sources are abundant during the growing season. Fortunately, we observed many natural enemy species, and it should conserve for natural balance to maintain the pest population.