Effects of Chlorella-feeding on larval milkfish, Chanos chanos, as evidenced by histological monitoring
An infectious pancreatic necrosis virus, IPNV, serologically related to the Ab serotype, has been isolated during an epizootic in 7-month-old turbot. The outbreak occurred after asymptomatic carriers were transferred from the farm where they were kept at 11°C to experimental facilities supplied with...
| Published in: | Aquaculture |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Elsevier
1987
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| Subjects: | |
| Online Access: | http://edoc.unibas.ch/53001/ https://edoc.unibas.ch/53001/ https://doi.org/10.1016/0044-8486(87)90016-0 |
| Summary: | An infectious pancreatic necrosis virus, IPNV, serologically related to the Ab serotype, has been isolated during an epizootic in 7-month-old turbot. The outbreak occurred after asymptomatic carriers were transferred from the farm where they were kept at 11°C to experimental facilities supplied with sea water at 18°C. Diseased fish were lethargic and displayed muscular haemorrhages and a severe necrosis of the haemotopoietic tissue of the kidney. Virus yields higher than 2×1010 pfu g−1 were recovered from the organs of moribund turbot. The losses were significantly higher at 18° than 11.5°C. Transmission of the disease could be experimentally demonstrated at 18°C by injecting 3-month-old turbot intraperitoneally with 6×108 pfu of virus. The mortality reached 56% in the injected group and no fish died in the control. |
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