Search Results - "Sonstegard, R A"

Oil refinery effluents: evidence of cocarcinogenic activity in the trout embryo microinjection assay by Metcalfe, C D, Sonstegard, R A

“…Extracts prepared from oil refinery effluents (soxhlet and XAD-2) were tested for carcinogenic potential by means of the rainbow trout (Salmo gairdneri)…”
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Microinjection of carcinogens into rainbow trout embryos: an in vivo carcinogenesis assay by Metcalfe, C D, Sonstegard, R A

“…Liver tumors were induced in rainbow trout (Salmo gairdneri) 1 year after carcinogens were microinjected into embryos. Neoplasms were induced by a single…”
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Relationship between anaphase aberrations and carcinogenicity in the trout embryo microinjection assay by Metcalfe, C D, Sonstegard, R A

“…An increased incidence of anaphase aberrations was observed in the tissues of rainbow trout embryos (Salmo gairdneri) within 96 hours of exposure to mitomycin…”
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Plasma cortisol and sex steroid levels in Great Lakes coho salmon (Oncorhynchus kisutch Walbaum) in relation to fecundity and egg survival by Morrison, P F, Leatherland, J F, Sonstegard, R A

“…Plasma 11-ketotestosterone and cortisol levels in spawning male and female coho salmon (Oncorhynchus kisutch Walbaum) collected from a Lake Erie (Pennsylvania)…”
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Structure of normal testis and testicular tumors in cyprinids from Lake Ontario by Leatherland, J F, Sonstegard, R A

“…Two types of testicular tumor were evident in cyprinid fishes collected from Lake Ontario. Both types of tumors appeared to be of Sertoli cell origin. One…”
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Genotoxic activity of particulate material in petroleum refinery effluents by METCALFE, C. D, SONSTEGARD, R. A, QUILLIAM, M. A

“…Oil refinery effluents were collected from 3 Canadian refineries. Particulate extracts were tested for mutagenic (Ames test) and clastogenic (sister chromatid…”
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Quantitative interlake comparison of thyroid pathology in Great Lakes coho (Oncorhynchus kisutch) and chinook (Oncorhynchus tschawytscha) salmon by Moccia, R D, Leatherland, J F, Sonstegard, R A

“…Coho salmon (Oncorhynchus kisutch) and chinook salmon (Oncorhynchus tshawytscha) from Lakes Ontario, Michigan, Erie, or Huron were found to suffer epizootics…”
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Structure and function of the pituitary gland in gonadal tumor-bearing and normal cyprinid fish by Leatherland, J F, Sonstegard, R A

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Isolation of Infectious Pancreatic Necrosis Virus from White Suckers (Catastomus commersoni) by SONSTEGARD, R. A, MCDERMOTT, L. A, SONSTEGARD, KAREN S

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Ultrastructure of the liver of Lake Erie coho salmon from post-hatching until spawning by Leatherland, J F, Sonstegard, R A

“…Hepatocytes were examined in coho salmon, Oncorhynchus kisutch, at several stages in their life cycles, using feral and laboratory-reared fish. Yolksac fry…”
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Hormonal control of gonadal maturation and development of secondary sexual characteristics in coho salmon, Oncorhynchus kisutch, from lakes Ontario, Erie, and Michigan by Leatherland, J F, Copeland, P, Sumpter, J P, Sonstegard, R A

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Bioaccumulation of organochlorines by yearling coho salmon (Oncorhynchus kisutch walbaum) fed diets containing Great Lakes' coho salmon, and the pathophysiological responses of the recipients by Leatherland, J F, Sonstegard, R A

“…1. Yearling coho salmon were fed diets containing the flesh of sexually mature adult coho salmon from Lakes Ontario, Erie and Michigan; Pacific Ocean coho…”
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Increasing Frequency of Thyroid Goiters in Coho Salmon (Oncorhynchus kisutch) in the Great Lakes by Moccia, Richard D., Leatherland, John F., Sonstegard, R. A.

“…Coho salmon collected during the 1976 spawning runs from Lakes Michigan, Ontario, and Erie had overt goiter frequencies of 6.3, 47.6, and 79.5 percent,…”
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Structure of thyroid and adrenal glands in rats fed diets of Great Lakes coho salmon (Oncorhynchus kisutch) by Leatherland, J F, Sonstegard, R A

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Studies of the etiology and epizootiology of lymphosarcoma in Esox (Esox lucius L. and Esoxmasquinongy) by Sonstegard, R A

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Effect of dietary mirex and PCBs on calcium and magnesium metabolism in rainbow trout, Salmo gairdneri and coho salmon, Oncorhynchus kisutch; a comparison with Great Lakes coho salmon by Leatherland, J F, Sonstegard, R A

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Presence of DNA polymerase in lymphosarcoma in northern pike (Esox lucius) by Papas, T S, Pry, T W, Schafer, M P, Sonstegard, R A

“…Northern poke lymphosarcoma DNA polymerase was partially purified from particulate fractions banding at 1.15 to 1.16 g/ml from homogenates prepared from frozen…”
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Effect of dietary Mirex and PCB's on hepatosomatic index, liver lipid, carcass lipid and PCB and Mirex bioaccumulation in yearling coho salmon, Oncorhynchus kisutch by Leatherland, J F, Sonstegard, R A, Holdrinet, M V

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Epidemiological Model for Passive Transfer of IPNV by Homeotherms by SONSTEGARD, R. A, MCDERMOTT, L. A

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Toxic effects in C57B1/6 and DBA/2 mice following consumption of halogenated aromatic hydrocarbon-contaminated great lakes coho salmon (Oncorhynchus kisutch Walbaum) by Cleland, G.B, Leatherland, J.F, Sonstegard, R.A

“…Diets containing coho salmon (Oncorhynchus kisutch Walbaum) from the Pacific Ocean or from Lakes Erie, Michigan, and Ontario [containing a gradation from low…”
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