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Bioluminescent bacterial flora of Nigerian coastal fish species

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Title Bioluminescent bacterial flora of Nigerian coastal fish species
 
Creator Agwu, O A
Aguta, O J
 
Subject Bacteria
Bioluminescence
Fish
Lagos coastal water
Vibrio spp
 
Description 26-32
The scarcity of studies on bioluminescent bacteria in fish species along the coastal and marine environment of
Nigeria prompted the assessment of abundance of bioluminescent bacteria and possible isolation on three common
coastal fish species (Drepane africana, Sardinella maderensis and Mugil cephalus) displaying luminescence. The
population of the luminescent bacteria among the three fish species ranged from 2.95×105 to 6.68×106 cfu ml-1 and the
corresponding percentage to the heterotrophic bacteria was between 0.01 and 0.34 %. The surface water had 2.00×105
cfu ml-1 with 0.20 % ratio to heterotrophic bacteria. The predominant luminescent bacteria observed were gram-negative
short rod. Further study of these bacteria showed that growth and light emission occurred concurrently without the
exhibition of lag phase; however, maximum luminescence was observed at mid-exponential growth phase suggesting
quorum sensing phenomenon. The 16S rRNA gene sequence showed 92.81 % homology to Vibrio campbelli, Vibrio
harveyi and Vibrio rotiferianus. This study highlights the occurrence of bioluminescent bacteria in skin of tropical
coastal fish species in Nigerian coastal waters and also serves as a fundamental basis for future studies on the
biotechnological application of this unique characteristics.
 
Date 2022-06-17T07:08:58Z
2022-06-17T07:08:58Z
2022-01
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscpr.res.in/handle/123456789/59893
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJMS Vol.51(01) [January 2022]