National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
It is generally considered that benthic organisms are good indicator of environmental condition of aquatic ecosystem. Present study focused on seasonal distribution of macrobenthic fauna and physico-chemical parameters of Hooghly-Bhagirathi river (part of Ganga river) during one year from June 2016 to May 2017. Total 16 species of mollusks (11 species of gastropods belonging to seven families and 4 species of bivalves belonging to the three families) have been found during study period. Among them Tarebia lineata, Filopaludina bengalensis, Novaculina gangetica and Lamellidens marginalis are found to be the most dominant species of the studied region of Ganga river. Four stations had been selected for the purpose of study (Station 1: Nabadwip, Station 2: Mayapur, Station 3: Khardaha, Station 4: Raichak) along the entire stretch of studied river. Gastropod and bivalves represent 43.59% and 56.41% of the total molluscs respectively. Principle component analysis (PCA) was done to determine the relationship among molluscan fauna and physico chemical variables of water. General linear model (GLM) was also done which gives a satisfactory result. Rarefraction curves confirmed the low probability of finding of addition of new species in station-1, whereas the probability of finding new species in case of station-2, station-3, station-4 are very low.
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