Sea lice (Lepeophtheirus salmonis ), ectoparasites of salmonids, are creating concern within the aquaculture industry of Canada. The prophylactic agent of choice to treat for these parasites is dichlorvos. Larval, juvenile, and adult lobsters (Homarus americanus ), species of zooplankton, species of...

A collection of lymnaeid snails in Montana, USA, was made over a 3 year period, in conjunction with a state-wide survey of the distribution of liver flukes. Collection areas were selected based on reports of infected cattle, sheep or wildlife, and with the intent of covering all geographical regions...

In the autumn of 2001, a self-administered mailed questionnaire was sent to fin fish recirculation facilities in the United States and Canada to examine the extent of biosecurity currently practiced in this sector of aquaculture. This paper describes the results of this survey (86% response rate). I...

Two unrelated cases of urticaria pigmentosa-like disease in the dog, characterized by multiple non-pigmented nodules and erythemic bullae of sporadic appearance and duration, were reviewed. Both dogs first showed signs at approximately 6 months of age, and there was no evidence of systemic involveme...

Serological examination of 533 Mephitis mephitis between December 1974 and July 1977 showed that the prevalence of serotype pomona was 11.4% and that it was higher in southern Alberta and adjacent areas of Saskatchewan than previously reported. Prevalence of antibodies among 94 skunk near an infecte...

Ten Standard Poodles were evaluated for progressive symmetrical scaling and alopecic dermatosis. The skin disease occurred in young adult Standard Poodles, either black or apricot, and was characterized by progressive symmetrical non-pruritic scaling with associated partial alopecia which began on t...

Comamonas sp. strain JS765 can grow with nitrobenzene as the sole source of carbon, nitrogen, and energy. We report here the sequence of the genes encoding nitrobenzene dioxygenase (NBDO), which catalyzes the first step in the degradation of nitrobenzene by strain JS765. The components of NBDO were ...

An outbreak of food poisoning in Canada during autumn 1987 was traced to cultured blue mussels (Mytilus edulis ) from the Cardigan Bay region of eastern Prince Edward Island (P.E.I.). The toxin, identified as domoic acid, had not previously been found in any shellfish and this outbreak represents th...

Plasma pharmacokinetics and bioavailability of oxytetracycline were studied in Atlantic salmon (Salmo salar ) (weight 481.8 plus or minus 39.98 g, mean plus or minus 1 SD) held in reconstituted seawater at 15 degree C. Fish received a single dose of oxytetracycline (OTC) at a dose rate of 100 mg/kg ...