Zobrazeno 1 - 10
of 192
pro vyhledávání: '"R. A. Sonstegard"'
Autor:
John F. Leatherland, R. A. Sonstegard
Publikováno v:
Journal of Fish Biology. 16:539-562
A progressive fall in serum thyroid hormone levels was found in Lake Ontario coho salmon, Oncorhynchus kisutch, between May 1978 and January 1979 concomitant with an increase in goitre frequency and thyroid hyperplasia. Despite marked differences in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be7681dfb499aa901afd52d2345ee7d8
https://doi.org/10.1111/j.1095-8649.1980.tb03732.x
https://doi.org/10.1111/j.1095-8649.1980.tb03732.x
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 43:169-173
A rapid sensitive assay for vitellogenin using rocket immunoelectrophoresis was developed in juvenile rainbow trout (Salmo gairdneri) induced with 17β-estradiol. The assay detected vitellogenin serum levels as low as 0.05 mg/mL. Significant reductio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a223a2bfaf36e3f58dd2a7631b2ac70e
https://doi.org/10.1139/f86-019
https://doi.org/10.1139/f86-019
Publikováno v:
Journal of the Fisheries Research Board of Canada. 35:1401-1409
Coho salmon (Oncorhynchus kisutch) and herring gulls (Larus argentatus) in the Great Lakes depend to a large extent on alewives (Alosa pseudoharengus) and smelt (Osmerus mordax) for their food. All of these species range widely in the lakes, and ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::907a1c2c236a7ceb9acbb75488e0e98e
https://doi.org/10.1139/f78-221
https://doi.org/10.1139/f78-221
Autor:
John F. Leatherland, R. A. Sonstegard
Publikováno v:
Journal of Fish Diseases. 3:115-124
Serum thyroxine (T4) and triiodothyroninc (T3) levels were significantly lower in fish fed a high PCB diet (500 mg/kg) in comparison to those fed the control diet. The differences in serum thyroid hormone levels between the PCB-fed group and those fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::228582d36822ace93980d9deda657acd
https://doi.org/10.1111/j.1365-2761.1980.tb00194.x
https://doi.org/10.1111/j.1365-2761.1980.tb00194.x
Autor:
R. A. Sonstegard, John F. Leatherland
Publikováno v:
Journal of the Fisheries Research Board of Canada. 35:1285-1289
Yearling coho salmon, Oncorhynchus kisutch, were fed diets contaminated with PCBs (500 μg or 50 μg/g dry feed), Mirex (50 μg or 5 μg/g dry feed), or a mixture of Mirex and PCBs (5 μg Mirex + 50 μg PCB/g dry feed) daily for 2 or 3 mo. Serum T3 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59a6fefd0cc0a04d31a2f50d2a1536c2
https://doi.org/10.1139/f78-202
https://doi.org/10.1139/f78-202
Autor:
R. A. Sonstegard
Publikováno v:
Annals of the New York Academy of Sciences. 298:261-269
We report investigations conducted during 1973 to 1976 in which we surveyed fishes and their associated neoplasms that inhabit this lake system, with particular reference to polluted and nonpolluted waters. Through this approach, we have explored the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57bd79da1e33c4e22ad13c3967110a53
https://doi.org/10.1111/j.1749-6632.1977.tb19270.x
https://doi.org/10.1111/j.1749-6632.1977.tb19270.x
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 43:1327-1331
We have used RNA blot analysis, in vitro translation, and protein immunoblot analysis to characterize mRNA in the pituitary glands of rapidly growing rainbow trout (Salmo gairdneri). Cell-free translation products of total RNA, analyzed by direct imm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bd36c51940956b67816579c9aa57cfe
https://doi.org/10.1139/f86-166
https://doi.org/10.1139/f86-166
Publikováno v:
Canadian Journal of Zoology. 63:1096-1100
Survival to hatch in 1982 of coho salmon (Oncorhynchus kisutch Walbaum) collected from two Lake Ontario stocks (Salmon River, New York, and Credit River, Ontario) and Lake Michigan and Lake Erie stocks in 1982 was 79, 86, 78 and 24%, respectively; eg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c12924e1210ff6a436c1054a690cb7d
https://doi.org/10.1139/z85-164
https://doi.org/10.1139/z85-164
Autor:
John F. Leatherland, R. A. Sonstegard
Publikováno v:
Journal of Fish Diseases. 4:413-423
Sexually mature spawning and prespawning adult and ‘jack’ coho salmon, Oncorhynchus kisutch, were collected during their potamodromous migration from Lakes Ontario, Erie and Michigan in late autumn. In addition, sexually immature spring salmon we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5c929f5ff1d424b9a679cb6abda200f
https://doi.org/10.1111/j.1365-2761.1981.tb01151.x
https://doi.org/10.1111/j.1365-2761.1981.tb01151.x