Antagonistic Fish Gut Bacterium Lactobacillus sp. as Biocontrol Agent in Ornamental Fish Culture
Antagonistic Fish Gut Bacterium Lactobacillus sp. as Biocontrol Agent in Ornamental Fish Culture
Date
2008
Authors
Abraham, T. Jawahar
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
The effect of addition of a fish gut bacterium Lactobacillus sp. P21 in to the rearing water
on Pseudomonas fluorescens induced mortalities in ornamental fishes was examined. The
goldfish, Carassius auratus and swordtail, Xiphophorus helleri were almost 3.7-4.7 times as likely
to become infected when exposed to P. fluorescens (106 cfu/mL) compared to control. The
introduction of Lactobacillus sp. into the culture system seeded with P. fluorescens reduced
the relative risk by more than two folds through the production of low molecular weight
bacteriocin-like-substance.
Description
Keywords
Ornamental fish culture, Carassius auratus, Xiphophorus helleri, Pseudomonas fluorescens, probiotic, Lactobacillus sp.
Citation
Fishery Techn 45(2):223-228