Effects of freshwater exposure to arsenic trioxide on the parr‐smolt transformation of coho salmon (Oncorhynchus kisutch)

John W. Nichols, Gary A. Wedemeyer, Foster L. Mayer, Walton W. Dickhoff, Stan V. Gregory, William T. Yasutake, Stanley D. Smith

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The effects of chronic (6 months) exposure to arsenic trioxide in fresh water on the Parr‐smolt transformation of coho salmon (Oncorhynchus kisutch) were evaluated. Exposure to 300 μg As/L (as As2O3) appeared to delay the onset of the normal increase in plasma thyroxine concentration and cause a transient reduction of gill Na+,K+‐ATPase activity. Fish exposed to 300 μg As/L also migrated to the sea less successfully than did nonexposed smolts, but there were no effects on the survival and growth of smolts held in 28‰ salt water for 6 months.

Original languageEnglish (US)
Pages (from-to)143-149
Number of pages7
JournalEnvironmental Toxicology and Chemistry
Volume3
Issue number1
DOIs
StatePublished - Jan 1984

Keywords

  • Arsenic
  • Arsenic trioxide
  • Chronic toxicity
  • Coho salmon
  • Parr‐smolt transformation

Fingerprint Dive into the research topics of 'Effects of freshwater exposure to arsenic trioxide on the parr‐smolt transformation of coho salmon (Oncorhynchus kisutch)'. Together they form a unique fingerprint.

Cite this