Fish Biodiversity of Dingaputa Haor and its Surrounding Area of Mohangong Upazila, Netrakona District

Md. Jahirul Islam¹, Md. Anisuzzaman², Maruf Hossain Minar^3, and Md. Jahangir Sarker²

¹Department of Environmental Science, Bangladesh Agricultural University, Mymensingh

²Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, Noakhali

³Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh

Cite this paper:
Md. Jahirul Islam, Md. Anisuzzaman, Maruf Hossain Minar and Md. Jahangir Sarker. Fish Biodiversity of Dingaputa Haor and its Surrounding Area of Mohangong Upazila, Netrakona District. Journal of Ocean Research. 2013; 1(1):1-5. doi: 10.12691/jor-1-1-1

Abstract

There is a great importance of dingaputa haor in fish production, maintaining biodiversity, meeting local demand and regional demand and also serve as the good source of fish seed supply for other water bodies. So a study was undertaken to evaluate the present situation of fish biodiversity of fish species in this region. During the study period 49 species of fish fauna including shrimp species were recorded. Among them, 7 species of carps, 12 species of catfishes, 4 species of snakehead, 5 species perches, 3 species of eels, 6 species < barbs, 2 species of minnows, 3 species of clupied species and other miscellaneous 7 species including shrimp mainly Macrobrachium rossenbergii and Macrobrachium malconsonii were recorded. The highest intensity and abundance were found in eel and clupeid. This result may be due to availability and broad distribution of eel and clupeid throughout the year and all kinds of water bodies. Some reasons are found which are liable for the loss of fish biodiversity such as Degradation of wetland beds due to heavy sedimentation and death of most of the wetlands in winter, Cultivation of rice or other field crops by artificially drying wetlands destroys natural fish habitat, Catch of wide number of small indigenous fishes and egg laying species of fish, Destruction of small indigenous fishes by using chemicals termed them as weed fish species and enhancement of water reclamation. Steps should be taken as early as possible to prevent further degradation.

Keywords:
Dingaputa haor fish biodiversity biodiversity index wetland ecosystem

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