Abstract
This study was conducted in several selected river intakes of the Pergau Lake as well as Sungai Pergau to determine the macroinvertebrate community, and also to update checklist of those macroinvertebrates known to the area. Previous study was done by Suhaila et al in 2017 with seven sampling points; Sungai Terang, Sungai Suda, Sungai Renyok 2, Sungai Renyok 3, Sungai Kalai, Sungai Long 1 and Sungai Long 2. Meanwhile, this study maintain the similar sampling points except Sungai Kalai, besides introduction of new sampling points at Sungai Renyok 1 and Sungai Pergau. Result shows the study rivers have great number of macroinvertebrates taxa. Sungai Renyok 2 recorded the most diverse aquatic insect collected with 29 genera while the least diversity of aquatic insects was recorded in Sungai Suda (16 genera). A total of 53 genera and 34 families from nine different orders of benthic macroinvertebrates namely Ephemeroptera, Odonata, Plecoptera, Hemiptera, Coleoptera, Trichoptera, Diptera, Decapoda, and Lepidoptera were recorded. The existence of some orders such as Ephemeroptera, Plecoptera and Trichoptera (EPT) showed rivers in Pergau has good water quality and habitats for macroinvertebrates especially aquatic insects.
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