alexa Pathogenic Bacteria in Oreochromis Niloticus Var. Stirling Tilapia Culture
ISSN: 2150-3508

Fisheries and Aquaculture Journal
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Research Article

Pathogenic Bacteria in Oreochromis Niloticus Var. Stirling Tilapia Culture

Huicab-Pech ZG, Castaneda-Chavez MR* and Lango-Reynoso F

National Technological Institute of Mexico/Technological Institute of Boca del Rio Veracruz, Mexico

*Corresponding Author:
Castaneda-Chavez MR
National Technological Institute of Mexico/Technological Institute of Boca del Rio Veracruz, Mexico
Tel: +52 229 986 0189
E-mail: castanedaitboca@yahoo.com.mx

Received date: March 10, 2017; Accepted date: April 21, 2017; Published date: April 28, 2017

Citation: Pech ZGH, Chavez CMR, Reynoso FL (2017) Pathogenic Bacteria in Oreochromis Niloticus Var. Stirling Tilapia Culture. Fish Aqua J 8:197. doi:10.4172/2150-3508.1000197

Copyright: © 2017 Pech HZG, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Tilapia Oreochromis niloticus is an aquaculture resource that represents one of the most popular crops in the world. However, species cultivation presents health problems, which are associated with the presence of pathogenic bacteria and causes high economic losses. The aim of this study was to determine the diversity of these bacteria at the genus level in the species O. niloticus var. Styrling during growing stage in the fattening and pre-fattening phases. Tilapia samples were collected and analyzed; each sample was subjected to a macroscopic external and internal observation of organs and tissues. Subsequently, samples were evaluated by microbiological tests using Trypticase Soy Agar (TSA), Thiosulfate Citrate Bile Salts Sucrose Agar (TCBS) and selective media (Pseudomonas sp. Group), and conventional biochemical tests aimed at the production of glucose, sucrose, lactose, oxidase, catalase, indole, ornithine and Gram staining. External analysis revealed clinical signs of disease such as skin bleeding, body ulceration, corneal opacity, and intestine and vesicle inflammation. Microbiological and biochemical analysis showed the presence of eleven bacterial genera known as Arthrobacter sp., Enterococcus sp., Staphylococcus sp., Micrococcus sp., Streptococcus sp., Aeromonas sp., Pseudomonas sp., Edwardsiella sp., Flexibacter sp. and Flavobacterium sp., with a predominance of 55% Gram-negative bacilli in tilapia crops. According to the results, it is necessary to take preventive and corrective measures in order to avoid possible risks during production cycles, mainly when handling organisms. It is also important to promote good crop management practices and quality systems in production units to benefit the aquaculture sector.

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