OLS : Record

RECORD NUMBER: 10 OF 14

Main Title New Eye Disease in Pen-Reared Chinook Salmon Caused by Metacestodes of 'Gilquinia squali' (Trypanorhyncha).
Author Kent, M. L.; Margolis, L.; Fournie, J. W.;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Department of Fisheries and Oceans, Nanaimo (British Columbia). Pacific Biological Station.
Publisher 1991
Year Published 1991
Report Number EPA/600/J-94/276;
Stock Number PB94-191020
Subjects Salmon; Parasitic diseases; Eye diseases; Reprints; Aquaculture; Mortality; Retina; Cataracts; Morbidity; Onchorhynchus tshawytscha; Gilquinia squali
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB94-191020 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/11/1994
Collation 9p
Abstract Eye infections by metacestodes of Gilquinia squali (Cestoda: Trypanorhyncha) were associated with mortality in chinook salmon Oncorhynchus tshawytscha reared in net-pens in seawater at two separate locations in British Columbia. Mortality associated with the disease was about 10% at one site and undetermined at the second site. The metacestode was found in the vitreous humor of moribund fish with eye lesions, whereas healthy fish from the same pen exhibited neither eye lesions nor the infection. The lesions were characterized by retinal folding and apparent retinal duplication, and cataractous changes; in severe cases, the cornea ruptured, and the lens was extruded. The spiny dogfish Squalus acanthias is the definitive host for the cestode. Spiny dogfish were prevalent in and around the affected net-pen sites, thus providing coracidia to infect the first intermediate host, which is most likely a crustacean. Although the metacestode is common in the eyes of European whiting Merlangius merlangus in the northeast Atlantic region, this is the first report of the infection in a salmonid.
Supplementary Notes Pub. in the Jnl. of Aquatic Animal Health, v3 p134-140 1991. Prepared in cooperation with Department of Fisheries and Oceans, Nanaimo (British Columbia). Pacific Biological Station.
NTIS Title Notes Journal article.
Title Annotations Reprint: New Eye Disease in Pen-Reared Chinook Salmon Caused by Metacestodes of 'Gilquinia squali' (Trypanorhyncha).
Category Codes 98F; 57N
NTIS Prices PC A02/MF A01
Primary Description 600/04
Document Type NT
Control Number 424431145
Cataloging Source NTIS/MT
Origin NTIS
Type CAT