Toxicity of Chelated Copper to Juvenile Red Drum Sciaenops ocellatus 1

• Published in: Journal of the World Aquaculture Society
• Main Authors: Peppard, Eileen M., Wolters, William R., Avault, James W., Guthrie Perry, W.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1991
• Subjects: Agronomy and Crop Science; Aquatic Science; Red drum; Sciaenops ocellatus
• Online Access: http://dx.doi.org/10.1111/j.1749-7345.1991.tb00722.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1749-7345.1991.tb00722.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1749-7345.1991.tb00722.x

Abstract Acute toxicity of chelated copper to juvenile red drum (x̄= 3.1 g) was determined in a static test at 25 C and 8 ppt salinity. The 12, 24, 48, 72, and 96 h LC 50 s were 1.90, 0.84, 0.75, 0.64, and 0.52 mg/L copper, respectively. Effects of temperature and salinity on the 96 h LC 50 (0.5 mg/L copper) for juvenile red drum (x̄= 5.0 g) were tested at two temperatures, 25 and 30 C, and three salinities, 0.5, 8, and 30 ppt. Temperature significantly affected mortality; mortality in 0.5 and 8 ppt salinities was significantly higher at 30 C than at 25 C. An increase in salinity significantly reduced the mortality of juvenile red drum. Total mortality occurred in 0.5 ppt salinity within 48 h at 25 C and within 12 h at 30 C. Total mortality occurred in 8 ppt salinity within 72 h at 25 C and within 48 h at 30 C. No mortality occurred during 96 h in 30 ppt salinity at 25 C or 30 C.