Outbreak of polycystic liver in red hybrid tilapia, Oreochromis niloticus (L.) x Oreochromis mossambicus (Peters)
Polycystic lesions have been reported in many different fish species. This paper reports for the first time a case of polycystic lesions in the liver of tilapia. A group of 700 tilapia juveniles of approximately 50 g was obtained from a hatchery in Negeri Sembilan, Malaysia. When they were between 1...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Japanese Society of Fish Pathology
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/53471/1/Outbreak%20of%20polycystic%20liver%20in%20red%20hybrid%20tilapia%2C%20Oreochromis%20niloticus%20%28L.%29%20x%20Oreochromis%20mossambicus%20%28Peters%29.pdf http://psasir.upm.edu.my/id/eprint/53471/ https://www.jstage.jst.go.jp/article/jsfp/51/Special-issue/51_S36/_article |
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| Summary: | Polycystic lesions have been reported in many different fish species. This paper reports for the first time a case of polycystic lesions in the liver of tilapia. A group of 700 tilapia juveniles of approximately 50 g was obtained from a hatchery in Negeri Sembilan, Malaysia. When they were between 130 and 250 g, they started to show distended abdomen but appetite remained normal. Post-mortem examination on 30 randomly selected tilapia revealed numerous large masses containing jelly-like material in the peritoneal cavity of 33% of the fish. Histopathology revealed typical cystic lesion of liver tissue. This is the first report in hybrid tilapia and is presumed to be the result of a genetic anomaly.
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