Effects of Hydrogen Sulfide on Channel Catfish, Ictalurus punctatus
- 1 January 1967
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 96 (1) , 31-36
- https://doi.org/10.1577/1548-8659(1967)96[31:eohsoc]2.0.co;2
Abstract
The natural production of sulfides is responsible for poor channel catfish production in many acid lakes in northeast Texas. The TLm of un‐ionized hydrogen sulfide for channel catfish fry ranged from 0.8 ppm at pH of 6.8 to 0.53 at pH 7.8. At pH 7.0 the TLm of this gas is 1.0 ppm for fingerling catfish, 1.3 for advanced fingerlings, and 1.4 for adult channel catfish. Small fish were also killed more quickly when exposed to these concentrations. Maximum concentrations of hydrogen sulfide are produced in the spring. Channel catfish populations can be maintained by continued stocking of adult fish or by raising the pH with agricultural limestone, which in turn lowers the toxic un‐ionized hydrogen sulfide.Keywords
This publication has 1 reference indexed in Scilit:
- Studies on the Thermal Sensitivity of Marine BacteriaJournal of Bacteriology, 1940