Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia

Massive mortality of cage-cultured red hybrid tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia was investigated. Moribund fish showing erratic swimming, sluggishness and hemorrhagic eyes were collected for the study. Water quality parameters were measured on-site. The highest tempe...

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Main Authors:	Najiah, M., Aqilah, N.I., Lee, K.L., Khairulbariyyah, Z., Mithun, S., Khan Chowdhury, Ahmed Jalal, Shaharom-Harrison, F., Nadirah, M.
Format:	Article
Language:	English
Published:	Asian Network for Scientific Information 2012
Subjects:	Q Science (General) SH Aquaculture. Fisheries. Angling
Online Access:	http://irep.iium.edu.my/29174/ http://irep.iium.edu.my/29174/ http://irep.iium.edu.my/29174/1/Massive_Mortality_Associated_with_Streptococcus_agalactiae_Infection.pdf

id	iium-29174
recordtype	eprints
spelling	iium-291742017-12-06T05:23:43Z http://irep.iium.edu.my/29174/ Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia Najiah, M. Aqilah, N.I. Lee, K.L. Khairulbariyyah, Z. Mithun, S. Khan Chowdhury, Ahmed Jalal Shaharom-Harrison, F. Nadirah, M. Q Science (General) SH Aquaculture. Fisheries. Angling Massive mortality of cage-cultured red hybrid tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia was investigated. Moribund fish showing erratic swimming, sluggishness and hemorrhagic eyes were collected for the study. Water quality parameters were measured on-site. The highest temperature was 32.70°C at the surface while lower temperature was 30.85°C at 6 m. Dissolved Oxygen (DO) was highest 7.05 mg L-1 at 4 m while lowest 6.15 mg L-1 at 10 m. The pH value was highest 8.28 at 6 m and lowest 7.52 at surface. The result has shown that un-ionized ammonia levels ranged from 0.00046-0.01 ppm within the optimum range. While Nitrite (0.003 ppm) and Nitrate values (0.1-0.7 ppm). The water quality parameters were showed their values within the accepted range of water quality for aquaculture. Bacteria were isolated from diseased fish using blood and nutrient agars, and identified using BBL Crystal™ Enteric/Non-fermenter ID and Gram Positive ID Systems and subjected to antibiotic susceptibility analysis. Results showed the presence of Streptococcus agalactiae, Burkholderia cepacia in the fish liver and Staphylococcus aureus in the fish eyes, suggesting a possible case of warm-water streptococcosis associated with S. agalactiae with multiple bacterial complications. Nevertheless, a continuous long term monitoring is essential for the sustainable development of cage aquaculture in Como river of Lake Kenyir Malaysia. Asian Network for Scientific Information 2012 Article PeerReviewed application/pdf en http://irep.iium.edu.my/29174/1/Massive_Mortality_Associated_with_Streptococcus_agalactiae_Infection.pdf Najiah, M. and Aqilah, N.I. and Lee, K.L. and Khairulbariyyah, Z. and Mithun, S. and Khan Chowdhury, Ahmed Jalal and Shaharom-Harrison, F. and Nadirah, M. (2012) Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia. Journal of Biological Sciences, 12 (8). pp. 438-442. ISSN 17273048 (P), 1812-5719 (O) 10.3923/jbs.2012.438.442
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	Q Science (General) SH Aquaculture. Fisheries. Angling
spellingShingle	Q Science (General) SH Aquaculture. Fisheries. Angling Najiah, M. Aqilah, N.I. Lee, K.L. Khairulbariyyah, Z. Mithun, S. Khan Chowdhury, Ahmed Jalal Shaharom-Harrison, F. Nadirah, M. Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia
description	Massive mortality of cage-cultured red hybrid tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia was investigated. Moribund fish showing erratic swimming, sluggishness and hemorrhagic eyes were collected for the study. Water quality parameters were measured on-site. The highest temperature was 32.70°C at the surface while lower temperature was 30.85°C at 6 m. Dissolved Oxygen (DO) was highest 7.05 mg L-1 at 4 m while lowest 6.15 mg L-1 at 10 m. The pH value was highest 8.28 at 6 m and lowest 7.52 at surface. The result has shown that un-ionized ammonia levels ranged from 0.00046-0.01 ppm within the optimum range. While Nitrite (0.003 ppm) and Nitrate values (0.1-0.7 ppm). The water quality parameters were showed their values within the accepted range of water quality for aquaculture. Bacteria were isolated from diseased fish using blood and nutrient agars, and identified using BBL Crystal™ Enteric/Non-fermenter ID and Gram Positive ID Systems and subjected to antibiotic susceptibility analysis. Results showed the presence of Streptococcus agalactiae, Burkholderia cepacia in the fish liver and Staphylococcus aureus in the fish eyes, suggesting a possible case of warm-water streptococcosis associated with S. agalactiae with multiple bacterial complications. Nevertheless, a continuous long term monitoring is essential for the sustainable development of cage aquaculture in Como river of Lake Kenyir Malaysia.
format	Article
author	Najiah, M. Aqilah, N.I. Lee, K.L. Khairulbariyyah, Z. Mithun, S. Khan Chowdhury, Ahmed Jalal Shaharom-Harrison, F. Nadirah, M.
author_facet	Najiah, M. Aqilah, N.I. Lee, K.L. Khairulbariyyah, Z. Mithun, S. Khan Chowdhury, Ahmed Jalal Shaharom-Harrison, F. Nadirah, M.
author_sort	Najiah, M.
title	Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia
title_short	Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia
title_full	Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia
title_fullStr	Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia
title_full_unstemmed	Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia
title_sort	massive mortality associated with streptococcus agalactiae infection in cage-cultured red hybrid tilapia oreochromis niloticus in como river, kenyir lake, malaysia
publisher	Asian Network for Scientific Information
publishDate	2012
url	http://irep.iium.edu.my/29174/ http://irep.iium.edu.my/29174/ http://irep.iium.edu.my/29174/1/Massive_Mortality_Associated_with_Streptococcus_agalactiae_Infection.pdf
first_indexed	2023-09-18T20:42:48Z
last_indexed	2023-09-18T20:42:48Z
_version_	1777409477825265664

Massive mortality associated with Streptococcus agalactiae Infection in Cage-cultured Red Hybrid Tilapia Oreochromis niloticus in Como River, Kenyir Lake, Malaysia

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