SEASONAL DISTRIBUTION OF FREE - LIVING NEMATODE COMMUNITIES IN BA LAI RIVER, BEN TRE PROVINCE

Abstract

The seasonal variation in the distribution structure of the free–living nematode communities in Ba Lai River, Ben Tre province was investigated to evaluate their differences in the wet and dry seasons. Nematode data were processed basing on average and standard deviation. Multivariate analysis such as MDS, ANOSIM and SIMPER were done by the PRIMER v.6–PERMANOVA software. The results of the study showed that seasonal differences in the distribution structure of nematode communities. Broadly distributed nematode genera, such as Daptonema, Theristus, Monhystera, and Terschellingia, were appeared in both seasons. Seasonal factors change the environmental characteristics, thereby changing nematode communities; however, it is necessary to define specifically this environmental characteristic in the next study.