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Effect of Sea Salt on the Hatching of Channel Catfish Eggs
Author(s) -
Phelps Ronald P.,
Walser Christoph A.
Publication year - 1993
Publication title -
journal of aquatic animal health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 52
eISSN - 1548-8667
pISSN - 0899-7659
DOI - 10.1577/1548-8667(1993)005<0205:eossot>2.3.co;2
Subject(s) - hatching , ictalurus , catfish , biology , salinity , zoology , fishery , fish <actinopterygii> , ecology
The potential of sea salt treatment, given as a continuous bath, for improving the hatching success of eggs of channel catfish Ictalurus punctatus was evaluated. Two‐ to three‐dayold eggs were held in systems with recirculating water at salinities of 0–5‰ until hatching. The percent hatch of untreated eggs averaged 57.6%. Mean hatching success rate was 79.4% for eggs treated at salinities of 0.5–2.5‰ and 67.5% for those treated at a salinity of 5‰. Total and unionized ammonia levels were reduced as the salinity increased.