Browsing by Subject "Diversity indices"
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Item FISH DIVERSITY OF TULSIHAWA LAKE, RUPANDEHI, NEPAL(Amrit Campus, 2023-08-17) RAUT, TARAThe study on the fish diversity of Tulsihawa Lake, Rupendehi, Nepal was carried out four different seasons from October 2021 to July 2022. The cast net was used to collect fish samples hiring local fishermen. Physico-chemical parameters were also analyzed. A total species richness of 19 species was collected from Tulsihawa Lake, out of which 2 species were nonnative. Order Cypriniformes and family Cyprinidae were dominant both in species composition and individual capture. Amblyphryngodon microlepis was dominant species accounting 50.53% followed by Puntius sophore (14.99%) and Chanda nama (8.21%). The water quality parameters were found within suitable range that supports fish diversity. Fish diversity was positively correlated with temperature, transparency, dissolved oxygen, and alkalinity whereas turbidity, pH, and total hardness negatively correlated. The Shannon - Weiner diversity index, Margalef's richness and evenness index indicated a strong relationship with overall species richness. So, it is concluded that Tulsihawa Lake harbors suitable habitat for variety of fish species and aquatic inhabitants.Item ICTHYOFAUNAL DIVERSITY OF MASYAM KHOLA, PALPA, NEPAL(Amrit Campus, 2023-08-17) Bhattarai, SangamThe present study deals with the fish diversity of Masyam Khola Palpa, Nepal covering two seasons winter and spring season using cast net. A total of 255 fish individuals belonging to 9 species, 7 genera and 2 families was found during study period. Cyprinidae (n=243) was the dominant family comprising of 7 species among 9 recorded species. Barilius bendelensis was the most common fish species on the basis of total no. of catch during the study period followed by Opsarius barna, Puntius sophore and Garra rupecula. Shannon-Weiner diversity index was highest (1.64) at station II and station III while lowest (1.44) at station I, simpson index was highest at station II (0.79) and lowest at station IV (0.76) and evenness index was highest in station I (0.89) and lowest in station IV (0.76). The environmental variables like DO, pH, temperature, and velocity were found to be in suitable range for fish habitat.