Differential Resistance among Channel Catfish Strains and Intraspecific Hybrids to Environmental Nitrite
- 1 January 1991
- journal article
- Published by Oxford University Press (OUP) in Journal of Aquatic Animal Health
- Vol. 3 (1) , 51-54
- https://doi.org/10.1577/1548-8667(1991)003<0051:draccs>2.3.co;2
Abstract
Fifteen strains and intraspecific hybrids of channel catfish Ictalurus punctatus were exposed to 76–79 mg nitrite-N/L. After 48 h of exposure, a significant difference (P = 0.0092) was observed in the number of dead fish among groups. The existence of nitrite-resistant and nitrite-susceptible strains of channel catfish provides another management criterion for aquaculturists in localities where nitrite toxicosis is a problem, and perhaps provides a basis for the development of a more nitrite-resistant aquaculture stock.Keywords
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