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The effects of copper (II) on molting and growth of juvenile lesser blue crabs Callinectes similis Williams
Neff, J.M.; Anderson, J.W. (1977). The effects of copper (II) on molting and growth of juvenile lesser blue crabs Callinectes similis Williams, in: Giam, C.S. (Ed.) Pollutant effects on marine organisms. pp. 155-165
In: Giam, C.S. (Ed.) (1977). Pollutant effects on marine organisms. Lexington Books: Lexington. ISBN 0-669-01518-0. XI, 215 pp., more

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    VLIZ: Proceedings [10073]

Keyword
    Marine

Authors  Top 
  • Neff, J.M.
  • Anderson, J.W.

Abstract
    The megalops and juvenile stages of the lesser blue crab Callinectes similis were exposed continuously to copper as CuSO4 for 130 days. A copper concentration of 500 ppb was found to be acutely toxic to both the megalops and juvenile stages. The megalops larvae were more sensitive to copper than were the juveniles. Copper at a concentration of 250 ppb was chronically toxic. At 50 ppb copper, no mortalities attributable to copper occurred among megalops or juveniles in 130 days. At this concentration, the length of intermolt periods was decreased, resulting in a faster growth rate than that of controls. Mortalities among crabs exposed to lethal concentrations of copper usually occurred during or immediately after a molt. The results are discussed in relation to the suspected modes of toxic action of copper in marine animals.

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