00000nam 2200000zi 4500 9.884044 CaOODSP 20241203113654 m o d f cr |n||||||||| 200128s1977 onc ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- En36-522/116-1977E-PDF Sonstegard, R. A., author. Virological and epizootiological studies of fish neoplasms in polluted and non-polluted waters of the Great Lakes, 1976-1977 / Dr. R.A. Sonstegard, monitored and edited by M.S. Mahdy, B.J. Dutka. [Burlington, Ontario] : [Canada Centre for Inland Waters, Environment Canada], [1977] 1 online resource (22 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Unpublished report Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 19-22). "The potential utility of monitoring neoplasia in fishes and their associated oncogenic viruses as sentinel animals for the early detection of waterborne environmental carcinogens was explored. Field epizootiological studies of Great Lakes coho salmon were made, and on increasing frequency of occurrence of thyroid hyperplasia (goiter) was found. Epizootiological studies strongly suggest that extrinsic environmental factors coupled with the low iodine environment are involved in the etiology, etc. of the disease. No evidence of virus was found in electron microscopic studies of the neoplastic thyroid tissues"--Summary, page 1. Coho salmon Great Lakes (North America) Fishes Diseases Great Lakes (North America) Fishes Effect of water pollution on Research Great Lakes (North America) Veterinary oncology Research Great Lakes (North America) Saumon coho Grands Lacs (Amérique du Nord) Poissons Maladies Grands Lacs (Amérique du Nord) Poissons Effets de la pollution de l'eau sur Grands Lacs (Amérique du Nord) Cancérologie vétérinaire Recherche Grands Lacs (Amérique du Nord) Canada. Environment Canada. Canada Centre for Inland Waters. Unpublished report (Canada Centre for Inland Waters) (CaOODSP)9.881827 PDF 1.94 MB https://publications.gc.ca/collections/collection_2020/eccc/en36-522/En36-522-116-1977-eng.pdf