Gulshan Ara Latifa*
Department of Environmental Science, Stamford University Bangladesh, Dhanmondi, Dhaka-1209, Bangladesh
Ahmad Kamruzzaman Majumder
Department of Environmental Science, Stamford University Bangladesh, Dhanmondi, Dhaka-1209, Bangladesh
Md. Humayun Kabir
Department of Environmental Science, Stamford University Bangladesh, Dhanmondi, Dhaka-1209, Bangladesh
Arnab Chakma
Department of Environmental Science, Stamford University Bangladesh, Dhanmondi, Dhaka-1209, Bangladesh
Fresh water, Scarcity, Depletion, Water resource.
Khagrachari district, Bangladesh
Crop-Soil-Water Management
Khagrachharidistrict is bordered by Tripura (Indian province) to the north, Rangamati and Chittagong districts to the south, Rangamatidistrict to the east, Chittagong district and Tripura (Indian province) to the west. It is situated under the Chittagong division. There are 3 Municipalities in Khagrachhari district,namelyKhagrachhari, Ramgor and Matiranga. The number of Upazilasin Khagrachhari district is nine, namelyKhagrachhari, Mohalchori, Manikchori, Panchori, Luxmichori, Dighinala, Matiranga, Ramgor and Guimara containing 38 Unions, 120 Mauzas and 1702 villages (BBS2011). Chengi is the longest river in Khagrachhari. Most of the areas of Khagrachhari are hilly areas. The main ethnic groups living in the district are Tripuras, Chakmas, Bengalis and Marmas. Three sampling sites have been selected at Chengiriver randomly for conducting this work. The sampling stations were denoted by S-1, S-2 and S-3 respectively. The first water sample was collected at 9.15 a.m.in S-1 (Ganjpara) and the second sample was collected at 10.25 a.m.in S-2 (near Chengi Bridge) and the third sample was collected at 11.7 a.m.in S-3 (near Rubber factory). The water samples were analyzed after collection. The entire sampling site coordinate measured by the GPS tracker. Sample-1 at Ganjpara is located between 23° 6'13" N latitude and 91°58'72"E longitude, Sample 2 at Chengibridge is located between 23°6 '21"N latitude and 91°58 '13"E longitude and sample3 at Rubber factory is located between 23° 7'34 "N latitude and 91°57'93"E longitude. For taxonomic and biometric study work a number of specimens were collected and preserved for subsequent laboratory study. Boats and trawlers were used to reach the sample location. The cast net, seine net, push net, dip net was used for collecting fish samples. The specimens were preserved in 10% formalin. For Laboratory use scale, Vernier slide calipers, pair of forceps, Petri dish, a scalpel and hand gloves were used for the identification of the fishes. Water samples were collected from the Chengi river of Khagrachari in dry seasons on May 1, 2017, and tested for physical qualities and chemical contents. For further analysis samples were collected in 1.5 liter polypropylene bottles. Prior to sample collection, sampling bottles were prepared following standard procedures. During the sample collection, all sample bottles were labeled as required. Total three sampling stations were selected. GPS data were collected by GPS machine at the sampling sites. Data collected from the morphometric and meristic features, for morphometric characters total length, standard length, pre-dorsal length, etc. were taken and for meristic study, the ratio of the different morphological parameters was taken. Standard procedures were used to analyze the Physico-chemical parameters of water samples. Visual inspection for transparency, GPS Meter (Garmin etrex 10) for geographic coordinate, thermometer (Eurolab ST9268B) (Graduated 0 to 100ºC) for temperature, DO meter for dissolved oxygen, single electrode pH meter(Jenway pH meter, model 3305) for pH, EC meter (range 0-1999 μS/cm) for electrical conductivity and TDS (model TDS3/TEMP) meter (range 0-9990 ppm) for Total dissolved solids were used in the field for measuring some physico-chemical parameters. For measuring the physico-chemical parameters standard procedure was followed according to the instruments manual and reading was taken after stable the reading. The taxonomic study of identification of fish up to the genera and species of fish was identified according to Talwar and Jhingran(1991) and Rahman (2005). For the statistical analysis and tabulation, Microsoft Excel 2007and ArcGIS 10.2.1softwarehave been used. All the graphs and tables were also illustrated by using this Microsoft Excel 2007 software. The statistical measures such as number and percent distribution were used for describing the variables of the study.
Bangladesh J. Zool. 47(2): 343-353, 2019ISSN: 0304-9027 (print)2408-8455 (online)
Journal