24Jul 2017

BIOASSAY AND IMPACT OF HOUSE HOLD SEWAGE ON SURVIVALITY, GROWTH AND FECUNDITY OF ESOMUS DANRICUS.

  • Assistant Professor of Zoology, Bangabasi College, Kolkata-09.
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The Darke fish (Esomus danricus) is a freshwater fish. It is one of the most commonly kept aquarium fish. Inland water bodies are subjected to heavy stress due to enormous addition of domestic waste water. The 96 hours static bioassay studies showed LC5-LC90 values ranging from 23.60-67.89% and 25.67 ? 76.46% respectively. Exposure to three different dilutions (5%, 50%, 90%) of domestic sewage effluents for 100 days resulted in significant changes (P<0.05)on fecundity, survivality and GSI of the fish as compared to control. Among physicochemical parameters, significant alterations were noticed in dissolved oxygen (DO), of bottom sediment. The data indicated higher number of fecal coliform and aerobic nitrogen fixers (ANF) and also high heterotrophic bacterial density.

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[Sanjib Ghoshal. (2017); BIOASSAY AND IMPACT OF HOUSE HOLD SEWAGE ON SURVIVALITY, GROWTH AND FECUNDITY OF ESOMUS DANRICUS. Int. J. of Adv. Res. 5 (Jul). 1445-1448] (ISSN 2320-5407). www.journalijar.com

Dr. Sanjib Ghoshal
Assistant Professor of Zoology, Bangabasi College, Kolkata-09

DOI:

Article DOI: 10.21474/IJAR01/4856      
DOI URL: http://dx.doi.org/10.21474/IJAR01/4856

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