Fish diversity of Mahanadi River (Odisha Part), threats and conservation measures
Abstract
The stretch of the Mahanadi River under the present study was divided into seven study regions for the purpose of sample collection to assess fish diversity. The sampling sites on the stretch of the Mahanadi River were between upstream in Sambalpur and downstream in Jagatsinghpur in the State of Odisha. Site selections were based on the locality where the fishers’ community is residing and actively participating in the fishing activity. Standard procedures and methods were followed during sampling and data collection and data analysis. The study recorded 57 fish species belonging to 36 genera,19 families and 7 orders from the seven regions along the stretch of the Mahanadi River. The analysis of a compilation of the samples in the study further revealed that Cyprinidae was the most abundant family contributing 35% of the total species belonging to different families recorded from the study region. It is observed from the pattern of distribution of species that the higher species richness is found in the regions where water dams, barrages or reservoirs are formed. Fish species like Parambassis lala (Ham.), Parambassis ranga (Ham.), Chanda nama (Ham.), Amblypharyngodon mola (Ham.), Danio devario (Ham-Buch.), Osteobrama cotio (Ham.), Puntius sophore (Ham.), Puntius ticto (Ham.), Rasbora daniconius (Ham.), Glossogobius giuris (Ham.) and Notopterus notopterus (Pallas) etc. documented good abundance in the study regions. The threat status of these species suggested that at least 26 % of fish fauna is threatened either being by Vulnerable or Near Threatened. There is a need to adopt requisite biodiversity conservation measures to protect the fish diversity of the Mahanadi river in order to conserve natures’ creation.
Keywords: Abundance, Biodiversity, Conservation Measures, Evenness, Shannon-Wiener Index,
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Copyright (c) 2020 Tarun Kumar Singh , Saroj Kumar Swain, Guru Bhikari Charan
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