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ARS Home » Southeast Area » Stuttgart, Arkansas » Harry K. Dupree Stuttgart National Aquaculture Research Cntr » Research » Publications at this Location » Publication #275464
Title: Tissue-specific copper concentrations in red drum Sciaenops ocellatus following long-term sublethal waterborne copper exposure and a 21-day withdrawal

Author
item ROBINSON, CHRISTOPHER - Florida Atlantic University
item WILLS, PAUL - Florida Atlantic University
item Riche, Martin
item Straus, David - Dave

Submitted to: Book of Abstracts Aquaculture America
Publication Type: Abstract Only
Publication Acceptance Date: 11/4/2011
Publication Date: 2/29/2012
Citation: Robinson, C.B., Wills, P.S., Riche, M.A., Straus, D.L. 2012. Tissue-specific copper concentrations in red drum Sciaenops ocellatus following long-term sublethal waterborne copper exposure and a 21-day withdrawal [abstract]. Book of Abstracts Aquaculture America 2012: Bringing all Players to the Table. p.400.

Interpretive Summary:

Technical Abstract: Juvenile red drum Sciaenops ocellatus were exposed to sublethal waterborne copper (Cu) concentrations (0.25-0.35 mg/L Cu) using a chelated Cu compound for 242 days as a prophylactic treatment to control ectoparasites followed by a 21-day withdrawal period in two 43 m3 recirculating aquaculture systems. Skin, muscle, gills, liver and intestinal tissues were collected on days 1, 3, 5, 15, and 21 during the 21-day depuration. Liver and intestine accumulated Cu at a rate strongly influenced by the environmental Cu load. Skin, gill, and muscle tissue did not accumulate substantial amounts of Cu despite its presence at therapeutic levels. The rank order of Cu concentration in each tissue was intestine > liver > gills > skin > muscle. Predictive equations for tissue Cu concentration in ug/g relative to time of withdrawal (day) and waterborne Cu concentrations (mg/L) were generated using trend analysis. Red drum cultured in recirculating aquaculture systems had low (26-52 ug/g) detectable Cu concentrations in muscle tissue relative to wild caught red drum (414 ug/g). A 21-day withdrawal following prophylactic Cu treatments