Saline groundwater as an aquaculture medium: physiological studies on the red drum, Sciaenops ocellatus

Physiological responses of the euryhaline red drum, Sciaenops ocellatus, to chloride salt addition, low salinity, and high sulfate concentration were measured. Survival was increased by addition of calcium chloride (CaCl^sub 2^) or magnesium chloride (MgCl^sub 2^) to dilute artificial seawater (0.2...

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Bibliographic Details
Published in:Environmental biology of fishes 1997-05, Vol.49 (1), p.119-128
Main Authors: Forsberg, J.A. (Texas A and M Univ., College Station, TX (USA). Dept. of Wildlife and Fisheries Sciences), Neill, W.H
Format: Article
Language:English
Subjects:
ACUICULTURA
AGUA SALINA
AGUAS SUBTERRANEAS
Animal aquaculture
ANIMAL PHYSIOLOGY
Animal productions
AQUACULTURE
Artificial seawater
Biological and medical sciences
Brackish
CALCIO
CALCIUM
Calcium chloride
Drum
EAU SALINE
EAU SOUTERRAINE
Feed conversion
FISIOLOGIA ANIMAL
Fundamental and applied biological sciences. Psychology
GROUNDWATER
MAGNESIO
MAGNESIUM
Magnesium sulfate
METABOLISM
METABOLISME
METABOLISMO
Physiological responses
PHYSIOLOGIE ANIMALE
Physiology
Pisciculture
SALINE WATER
SALINIDAD
SALINITE
SALINITY
SCIAENOPS
Sciaenops ocellatus
Seawater
Sodium sulfate
SULFATE
Sulfates
SULFATOS
SULPHATES
SUPERVIVENCIA
SURVIE
SURVIVAL
Vertebrate aquaculture
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Summary:Physiological responses of the euryhaline red drum, Sciaenops ocellatus, to chloride salt addition, low salinity, and high sulfate concentration were measured. Survival was increased by addition of calcium chloride (CaCl^sub 2^) or magnesium chloride (MgCl^sub 2^) to dilute artificial seawater (0.2 ppt salinity). Although survival and routine metabolic rates were greater in MgCl^sub 2^ treatments, growth and feed efficiency were greater in CaCl^sub 2^ treatments. Marginal metabolic scope increased when CaCl^sub 2^ or MgCl^sub 2^ were added to dilute artificial seawater. There was a strong positive linear relationship (p=0.0001, r=0.91) between fish survival and salinity of artificial seawater dilutions over the salinity range 0.1 to 3.0 ppt. Monovalent ion concentrations in red drum plasma varied; whereas, divalent ion concentrations were relatively constant. Survival and growth were not affected by high sulfate concentrations (2000 mg l^sup -1^) in 3.0 ppt artificial seawater supplemented with either sodium sulfate or magnesium sulfate. Routine metabolic rate and marginal metabolic scope of red drum exposed to high sulfate concentrations were slightly, but not significantly, lower than those of red drum in 3 ppt artificial seawater.[PUBLICATION ABSTRACT]
ISSN:0378-1909
1573-5133
DOI:10.1023/A:1007350726184