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Assemblage of aquatic Heteroptera (Gerromorpha and Nepomorpha) in relation to microhabitats in the Phong River, Northeast Thailand
- Suksai, Benjamart, Sangpradub, Narumon, Zettel, Herbert
- Entomological research 2016 v.46 no.2 pp. 93-106
- Heteroptera, correspondence analysis, gravel, macrophytes, microhabitats, rivers, shade, surface water, vegetation, water pollution, Thailand
- In this study, we explored the composition and assemblage structure of aquatic Heteroptera from 15 sampling sites along the Phong River, Thailand, during the rainy (July 2011), cool (December 2011) and hot (March–April 2012) seasons. A total of 8399 individuals, belonging to 54 species and 12 families of aquatic Heteroptera were recorded. The Kruskal–Wallis test indicated significant difference in total number of species and total number of individuals of aquatic Heteroptera among microhabitat types (P < 0.05). Stepwise multiple regression and canonical correspondence analysis (CCA) ordination show that characteristics of microhabitats including percentage of gravel, percentage of aquatic macrophytes covering the water surface and percentage of shading from riparian vegetation determine aquatic Heteroptera assemblage structures. From this study, microhabitats have more effect on aquatic Heteroptera than water pollution.