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Microbial population and diversity in earthworm midden of Ocnerodrilus occidentalis Eisen

Suruchi Kumari, Rohit Srivastava*, Neeta Lal & M. P. Sinha
University Department of Zoology, Ranchi University, Ranchi, Jharkhand, India.
Received : 11th January, 2023 ; Revised : 11th February, 2023

Abstract– The effect of earthworm (Ocnerodrilus occidentalis Eisen) middens on microbial population density, biomass and bacterial diversity has been studied in laboratory. Initially bacterial population was high in midden (57.2 ± 2.804 X109) than soil (45.2 ± 0964 X 109) there after a sharp decline in bacterial population was observed both in soil and earthworm midden. The bacterial species reported in the midden of O. occidentalis belong to the genus Aeromonas, Bacillus, Pseudomonas, Sphingomonas, Kocuria, Acinetobacter and Methylobacterium. The objective of the present study was to analyse the state of art on the microbial population and bacterial diversity in the midden of O. occidentalis.

Key words: Midden, O. occidentalis, Bacterial diversity, Bacillus

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