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Distribution of extracellular enzyme producing bacteria in the digestive tracts of four brackishwater fish species

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Title Distribution of extracellular enzyme producing bacteria in the digestive tracts of four brackishwater fish species
Not Available
 
Creator Das P.
Mandal S.
Khan A.
Manna S.K.
Ghosh K.
 
Subject Brackish water fish
gut bacteria
enzyme
Brevibacillus parabrevis
 
Description Not Available
Occurrence and distribution of enzyme-producing bacteria in the proximal (PI), middle (MI), and distal (DI) segments of the gastrointestinal tracts of 4 brackish water teleosts (Scatophagus argus, Terapon jarbua, Mystus gulio, and Etroplus suratensis) have been investigated. Data were presented as log viable counts g
–1 intestine (LVC). e heterotrophic bacterial population had the highest occurrence in the DI regions of all sh species studied except M. gulio. Proteolytic and amylolytic bacteria had the highest occurrence in the DI of M. gulio (LVC = 5.50 and 5.93, respectively), while cellulolytic and lipolytic populations exhibited highest occurrences in the DI regions of T. jarbua (LVC = 6.33) and S. argus (LVC = 5.78), respectively. Out of the 81 bacterial isolates, the most promising 3 isolates were determined through quantitative enzyme assay and studied through 16S rRNA gene sequence analysis for identication. Both the strains SA2.2 isolated from S. argus and TJ2.3 isolated from T. jarbua showed high similarity to dierent strains of Brevibacillus
parabrevis, while another strain, MG4.2, isolated from M. gulio, was similar to Bacillus licheniformis. e NCBI GenBank accession numbers of the 16S rRNA gene sequences for isolates SA2.2, TJ2.3, and MG4.2 were KF377322, KF377324, and KF377323, respectively. e present study might oer scope for further research to evaluate prospects for application of the gut-associated extracellular enzyme-producing bacteria in brackish water aquaculture.
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Date 2018-12-17T11:17:06Z
2018-12-17T11:17:06Z
2015-01-15
 
Type Research Paper
 
Identifier Das P., Mandal S., Khan A., Manna S.K., and Ghosh K. 2014. Distribution of extracellular enzyme producing bacteria in the digestive tracts of four brackishwater fish species. Turkish Journal of Zoology. 38: 79-88.
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http://krishi.icar.gov.in/jspui/handle/123456789/16053
 
Language English
 
Relation Not Available;
 
Publisher Scientific and Technological Research Council of Turkey (TÜBİTAK)