Epizootic papillomas in Prown bullheads Ictalurus nebulosus from Silver Stream reservoir, New York

Epizootic papillomas in brown bullheads Ictalurus nebulosus from Silver Stream reservoir, New York

Fish from Silver Stream reservoir in Newburgh, New York (USA) were examined in 1985 and 1986 following reports by fishermen who had found a high prevalence of skin lesions in brown bullheads Ictalurus nebulosus caught in the reservoir Oral and skin papillomas were found in 43.2 % and 60.0 O/o of the brown bullheads from these respective samplings, whereas no papillomas were found in yellow bull...

[Poisonous sting of various fish: Ictalurus nebulosus, Ictalurus catus. Research on the envenomization of wounds].

Glutathione S-transferase expression in pollution-associated hepatic lesions of brown bullheads (Ameiurus nebulosus) from the Cuyahoga River, Cleveland, Ohio.

In rodents, overexpression of glutathione S-transferase pi is a characteristic feature of foci of cellular alteration (FCA) and neoplastic liver lesions induced by genotoxic chemicals. Alterations of glutathione S-transferase (GST) expression in hepatic lesions have also been reported in fish exposed to environmental carcinogens, and cellular GST expression may be an important determinant of gr...

Mortality and pathology in brown bullheads Amieurus nebulosus associated with a spontaneous Edwardsiella ictaluri outbreak under tank culture conditions.

Brown bullheads Amieurus nebulosus (family Ictaluridae) are commonly used as a sentinel of environmental contamination. These fish are not generally cultured under laboratory conditions and little is known about their disease susceptibility. Here we report an outbreak of disease due to Edwardsiella ictaluri in a laboratory population of tank-reared, wild-caught brown bullheads. The isolate was ...

Insulin biosynthesis in the bullhead, Ictalurus nebulosus, and the effect of temperature.

Insulin biosynthesis in the brown bullhead, Ictalurus nebulosus (Le Sueur), was studied by measuring the incorporation in vitro of [(3)H]leucine into proteins of the principal islet. The tissue was incubated for 6-15h in Krebs-Ringer bicarbonate buffer with [(3)H]leucine, supplemented with amino acids and glucose. Proteins, precipitated with trichloroacetic acid and extracted with acid ethanol,...