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Swimming Endurance and Resistance to Copper and Malathion of Bluegills Treated by Long‐term Exposure to Sublethal Levels of Hydrogen Sulfide
Author(s) -
Oseid Donavon,
Smith Lloyd L.
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<620:seartc>2.0.co;2
Subject(s) - malathion , zoology , toxicology , fish <actinopterygii> , hydrogen sulfide , copper , biology , chemistry , pesticide , fishery , ecology , sulfur , organic chemistry
After 126 or 148 days of exposure to H 2 S concentrations ranging from .0004 to .0146 mg/1, young‐of‐the‐year bluegills were tested for swimming endurance and resistance to copper or malathion. Swimming tests at low speeds indicated increased endurance for fish exposed to .0004 mg/1 H 2 S, but fish exposed to higher concentrations had progressively less endurance than the controls. In the tests conducted at higher speeds fish in all test concentrations showed less endurance than the controls. Resistance to copper was increased by exposure to H 2 S, but resistance to malathion was not affected except in the lowest test concentration. The chronic exposure to H 2 S also reduced growth in the highest concentration, and gill irrigation rate increased progressively with increased concentrations.