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- Title
The susceptibility of salmonid fish to an atypical strain of <em>Aeromonas salmonicida</em> that infects goldfish, <em>Carassius auratus</em> (L.), in Australia.
- Authors
Whittington, R. J.; Cullis, B.
- Abstract
An enzootic, Australian, atypical strain of Aeromonas salmonicida isolated from diseased goldfish, Carassius auratus (L.), was inoculated into Atlantic salmon, Salmo salar L.. brown trout, 5. tnitta L.. rainbow trout, S. gairdneri Richardson, and brook trout. Salvelinus fondnalis (Mitchill), fingerlings by intraperitoneal injection (i.p.) and by bath challenge, the latter with and without prior abrasion of skin. The 10-day LD50(j (i-p.) was estimated to be 7·4 × 10-3 colony forming units (cfu) for Atlantic salmon, 3·7 × 102 cfu for brown trout, 3·7 × 102 cfu for brook trout and 6·4 × 103 cfu for rainbow trout. Brown, rainbow and brook trout succumbed to bath challenges with between 105-106 cfu/ml, developing ulcers of the skin and septicaemia. The organism was trasmitted from inoculated fish to five of 195 within-tank control fish via water and established a carrier state in one of 14 Atlantic salmon. It was concluded that the organism poses a significant threat to the salmonid farming industry and wild saimonid fisheries in Australia.
- Subjects
RAINBOW trout; ATLANTIC salmon; CYPRINIDAE; SEPSIS; NATURAL resources; AQUATIC resources
- Publication
Journal of Fish Diseases, 1988, Vol 11, Issue 6, p461
- ISSN
0140-7775
- Publication type
Article
- DOI
10.1111/j.1365-2761.1988.tb00745.x