Northwest Fisheries Science Center

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Document Type: Journal Article
Center: NWFSC
Document ID: 6259
Title: The effects of aroclor 1254 and no. 2 fuel oil on smoltification and sea-water adaptation of coho salmon (Oncorhynchus kisutch)
Author: Leroy C. Folmar, Walton W. Dickhoff, Waldo S. Zaugg, Harold O. Hodgins
Publication Year: 1982
Journal: Aquatic Toxicology
Volume: 2
Issue: 5-6
Pages: 291-299

 Yearling coho salmon (Oncorhynchus kisutch) were injected with 150 μg/kg of the polychlorinated biphenyl (PCB) Aroclor 1254 just prior to smoltification. During the following 6 wk, biweekly measurements of plasma thyroxine (T4) and triiodothyronine (T3) and gill Na+-K+ adenosine triphosphatase (ATPase) were made. Alterations in the normal developmental patterns of T4 were observed in the PCB-injected fish. At sea-water entry, the salmon oil carrier-injected and PCB-injected fish were further subdivided. One-half of each group went into sea water and the other half into sea water containing 700 μg/l No. 2 fuel oil. Significant mortalities were observed in all of

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