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Fatal encephalitis due to the scuticociliate Uronema nigricans in sea-caged, southern bluefin tuna Thunnus maccoyii
Citation
Munday, BL and ODonoghue, PJ and Watts, M and Rough, KM and Hawkesford, TM, Fatal encephalitis due to the scuticociliate Uronema nigricans in sea-caged, southern bluefin tuna Thunnus maccoyii, Diseases of Aquatic Organisms, 30, (1) pp. 17-25. ISSN 0177-5103 (1997) [Refereed Article]
Abstract
A syndrome characterized by atypical swimming behaviour followed by rapid death was first reported in captive southern bluefin tuna Thunnus maccoyii (Castelnau) in the winter of 1993. The cause of this behaviour was found to be a parasitic encephalitis due to the scuticociliate Uronema nigricans (Mueller). Based on parasitological and histological findings, it is proposed that the parasites initially colonise the olfactory rosettes and then ascend the olfactory nerves to eventually invade the brain. Possible epidemiological factors involved in the pathogenesis of the disease include water temperature (<18°C) and the immune status of the fish.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Fisheries sciences |
| Research Field: | Aquaculture |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - aquaculture |
| Objective Field: | Fisheries - aquaculture not elsewhere classified |
| UTAS Author: | Munday, BL (Dr Barry Munday) |
| UTAS Author: | Watts, M (Dr Marianne Watts) |
| UTAS Author: | Rough, KM (Ms Kirsten May Rough) |
| UTAS Author: | Hawkesford, TM (Ms Tiina Mall Hawkesford) |
| ID Code: | 10913 |
| Year Published: | 1997 |
| Web of Science® Times Cited: | 102 |
| Deposited By: | TAFI - Aquaculture |
| Deposited On: | 1997-08-01 |
| Last Modified: | 2011-08-11 |
| Downloads: | 0 |
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