Premium
Drinking Rates of Stressed One‐Month‐Old Striped Bass: Effects of Calcium and Low Concentrations of Sodium Chloride
Author(s) -
Grizzle John M.,
Cummins Keith A.
Publication year - 1999
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(1999)128<0528:drosom>2.0.co;2
Subject(s) - bass (fish) , zoology , sodium , calcium , chemistry , morone saxatilis , toxicology , fishery , biology , organic chemistry
Drinking rates for striped bass Morone saxatilis were measured in freshwater and in water with a physiologically hypotonic concentration of NaCl (5 g/L). Fish were 27 d old (posthatching) and had recently completed larval development. Drinking rates were determined without allowing fish to adjust to test conditions because problems with survival of young striped bass often occur when they are stressed. In water with 5 g NaCl/L and 3.7 mg Ca 2+ /L, a combination of ions lethal to stressed striped bass at this stage of development, mean drinking rate (±SE) was 4.7 ± 0.3 μL· g –1 · h –1 . This drinking rate was significantly higher than the mean drinking rate (1.8 ± 0.2 μL · g –1 · h –1 ) in water with 5 g NaCl/L and 100 mg Ca 2+ /L. Drinking rate in ion‐poor water (5.8 mg Na + /L and 3.7 mg Ca 2+ /L) was only 0.38 ± 0.05 μL · g –1 · h –1 . Drinking rates measured for 1 h or 3 h did not differ significantly, indicating that changes in drinking rates occurred quickly. High drinking rates may contribute to the death of young striped bass when there is an imbalance between environmental concentrations of NaCl and Ca 2+ .