Bacterial Flora Associated with the Larval Rearing Environment and Larvae of Giant Freshwater Prawn Macrobrachium Rosenbergii

Mohamed Hatha A.A.; Suluja T.; Mujeeb Rahiman K.M.; Thomas A.P.

doi:10.56093/ft.v42i2.16931

Authors

Mohamed Hatha A.A. Department of Biology, School of Pure and Applied Sciences The University of the South Pacific
Suluja T. MES Ponnani College, Ponnani
Mujeeb Rahiman K.M. School of Environmental Sciences, MG University, Kottayam
Thomas A.P. School of Environmental Sciences, MG University, Kottayam

https://doi.org/10.56093/ft.v42i2.16931

Keywords:

Macrobrachium rosenbergii, rearing water microflora, larval mortality.

Abstract

Water samples from seed transportation bag, larval rearing tank and Artemia collected from "rearing operation of Macrobrachium rosenbergi were analysed to characterize the microflora associated with these samples. The larvae were also analysed to see the microflora. It was found that Vibrio was the dominant genera in all the'samples. Since the mortality was high in the hatchery operation, the water samples from the rearing tank were analysed for total heterotrophic bacterial (THB) load during five cycles. THB ranged between 8 x 103 and 3.2 x 105 cfu per ml. Microbial diversity was high in the water samples from larval rearing tank, which included various genera such as Alcaligenes, Vibrio, Bacillus, Pseudomonas, Moraxclla and Micrococcus apart from members of the family Enterobacteriaceae.