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Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)

The rapid increases in global aquaculture industry have exposed many diseases that were not known in aquaculture fields. Streptococcus agalactiae, one of Streptococci species that infecting both terrestrial and aquatic animals. The organisms have been isolated from numerous fish species in natural d...

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Main Authors: Abuseliana, Ali Farag, Mohd Daud, Hassan, Abdul Aziz, Saleha, Bejo, Siti Khairani, Alsaid, Milud
Format: Article
Language:English
English
Published: Medwell Publishing 2011
Online Access:http://psasir.upm.edu.my/id/eprint/25690/1/Pathogenicity%20of%20Streptococcus%20agalactiae%20isolated%20from%20a%20fish%20farm%20in%20Selangor%20to%20Juvenile%20Red%20Tilapia.pdf
http://psasir.upm.edu.my/id/eprint/25690/
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spelling my.upm.eprints.256902015-10-16T08:06:54Z http://psasir.upm.edu.my/id/eprint/25690/ Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.) Abuseliana, Ali Farag Mohd Daud, Hassan Abdul Aziz, Saleha Bejo, Siti Khairani Alsaid, Milud The rapid increases in global aquaculture industry have exposed many diseases that were not known in aquaculture fields. Streptococcus agalactiae, one of Streptococci species that infecting both terrestrial and aquatic animals. The organisms have been isolated from numerous fish species in natural disease outbreaks and showed to be pathogenic to several fish species. Recently, few streptococcosis outbreaks affecting cultured Red tilapia in Selangor were investigated and the S. agalactiae isolate was used to study its pathogenicity on juvenile Red tilapia. The 120 h 50% endpoint (LD50) value in juvenile tilapia injected Intraperitoneally (IP) was 1.56x105 cfu mL-1. Experimental infections were carried out by bathing the fish for 30 min in water containing the bacteria and by IP injection. It was observed that IP route was more potent to cause mortality to juvenile Red tilapia and produced clear clinical signs within 5 days. It was noted that the mortality started to reduce after 5 days and fish recovered after 9 days post inoculation. In contrast, immersion route did not induce mortality but produced moderate clinical signs such as lethargy and loss of appetite and fish started to recover after 6 days. The findings of the current study would enable us to formulate a suitable measure to prevent and control future disease outbreaks Medwell Publishing 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25690/1/Pathogenicity%20of%20Streptococcus%20agalactiae%20isolated%20from%20a%20fish%20farm%20in%20Selangor%20to%20Juvenile%20Red%20Tilapia.pdf Abuseliana, Ali Farag and Mohd Daud, Hassan and Abdul Aziz, Saleha and Bejo, Siti Khairani and Alsaid, Milud (2011) Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.). Journal of Animal and Veterinary Advances, 10 (7). pp. 914-919. ISSN 1680-5593 10.3923/javaa.2011.914.919 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The rapid increases in global aquaculture industry have exposed many diseases that were not known in aquaculture fields. Streptococcus agalactiae, one of Streptococci species that infecting both terrestrial and aquatic animals. The organisms have been isolated from numerous fish species in natural disease outbreaks and showed to be pathogenic to several fish species. Recently, few streptococcosis outbreaks affecting cultured Red tilapia in Selangor were investigated and the S. agalactiae isolate was used to study its pathogenicity on juvenile Red tilapia. The 120 h 50% endpoint (LD50) value in juvenile tilapia injected Intraperitoneally (IP) was 1.56x105 cfu mL-1. Experimental infections were carried out by bathing the fish for 30 min in water containing the bacteria and by IP injection. It was observed that IP route was more potent to cause mortality to juvenile Red tilapia and produced clear clinical signs within 5 days. It was noted that the mortality started to reduce after 5 days and fish recovered after 9 days post inoculation. In contrast, immersion route did not induce mortality but produced moderate clinical signs such as lethargy and loss of appetite and fish started to recover after 6 days. The findings of the current study would enable us to formulate a suitable measure to prevent and control future disease outbreaks
format Article
author Abuseliana, Ali Farag
Mohd Daud, Hassan
Abdul Aziz, Saleha
Bejo, Siti Khairani
Alsaid, Milud
spellingShingle Abuseliana, Ali Farag
Mohd Daud, Hassan
Abdul Aziz, Saleha
Bejo, Siti Khairani
Alsaid, Milud
Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)
author_facet Abuseliana, Ali Farag
Mohd Daud, Hassan
Abdul Aziz, Saleha
Bejo, Siti Khairani
Alsaid, Milud
author_sort Abuseliana, Ali Farag
title Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)
title_short Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)
title_full Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)
title_fullStr Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)
title_full_unstemmed Pathogenicity of Streptococcus agalactiae isolated from a fish farm in Selangor to Juvenile Red Tilapia (Oreochromis sp.)
title_sort pathogenicity of streptococcus agalactiae isolated from a fish farm in selangor to juvenile red tilapia (oreochromis sp.)
publisher Medwell Publishing
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/25690/1/Pathogenicity%20of%20Streptococcus%20agalactiae%20isolated%20from%20a%20fish%20farm%20in%20Selangor%20to%20Juvenile%20Red%20Tilapia.pdf
http://psasir.upm.edu.my/id/eprint/25690/
_version_ 1643828722968559616
score 13.211869

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