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The Half‐Life of Biological Activity of Antimycin Determined by Fish Bioassay
Author(s) -
Marking Leif L.,
Dawson Verdel K.
Publication year - 1972
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1972)101<100:thobao>2.0.co;2
Subject(s) - toxicant , bioassay , catfish , rainbow trout , fish <actinopterygii> , chemistry , toxicology , environmental chemistry , biology , fishery , toxicity , ecology , organic chemistry
The half‐life of biological activity of antimycin, a powerful fish toxicant, was determined using fish bioassays at different test temperatures and pHˈs. The species exposed in decreasing order of sensitivity to the toxicant include rainbow trout, bluegill, green sunfish, goldfish, channel catfish, and black bullhead. Antimycin is deactivated more rapidly at higher temperatures, but the high temperatures did not influence the deactivation as greatly as high pH levels. The half‐lifes at the different pHˈs are as follows: pH 6 and 6.5 = 310 hours, pH 7.5 = 120 hours, pH 8 = 100 hours, pH 8.5 = 46 hours, pH 9.0 = 9.7 hours, pH 9.5 = 4.6 hours, and pH 10 = 1.5 hours.