Feeding ecology of fishes in Nhong Thale Song Hong, Trang province
2002
Subkhoon, K.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Science. Department of Biology) | Leelawathanagoon, P.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Science. Department of Biology) | Lheknim, V.(Khon Kaen University, Khon Kaen (Thailand). Faculty of Science. Department of Biology)
Trophic relationships of fish in the food web of Nhong Thale Song Hong, a natural freshwater lake in Trang province, were determined by bimonthly sampling of fish, phytoplankton, zooplankton, benthos, fauna associated with macrophytes, and water quality from November 1999 to November 2000. The Study, so far, has determined 4 orders and 18 species of freshwater fish, 3 divisions and 11 orders of phytoplankton, 3 phyla and 5 orders of zooplankton, 1 phylum and 2 orders of benthic fauna, and 2 phyla and 11 orders of fauna associated with macrophytes. Ranges of water quality parameters were: water temperature 29.58-33.19 deg C, water pH 6.6-7.8, dissolved oxygen 5.85-7.27 mg/l, alkalinity 4.00-11.33 mg/l, phosphorus 0.07-0.40 mg/l and nitrogen 0.01-0.90 mg/l. Based on the stomach contents of 1,395 individuals, fishes were devided into 3 groups, i.e., animal-feeding fish, animal-and zooplankton-feeding fish, and plant-. Phytoplankton and zooplankton-feeding fish. Seasonal changes in diets were evident, diets varied in both quality and quantity of foods. The analysis of diet suggested that there was some overlap of Diptera larvae.
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Este registro bibliográfico ha sido proporcionado por Thai National AGRIS Centre, Kasetsart University
