• Effect of zinc on zoeal development of the estuarine hermit crabClibanarius olivaceus (Henderson)

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    • Keywords


      Clibanarius olivaceus ; chronic influence; zinc; survival rate; mean days of moulting

    • Abstract


      The 96 h LC50 value for zinc was 100 ppb. Larvae reared in 7 sublethal (1, 5, 10, 30, 50, 70, 90 ppb) and 96 h LC50 level concentrations (100 ppb) showed survival rates more than 10%, thus perfectly fitting in with definition of chronic concentration. Survival rate of larvae decreased with increase in test concentration but in the different chronic test concentrations, the overall time required for the completion of zoeal development did not differ significantly from that of control.

    • Author Affiliations


      S Ajmalkhan1 K Rajendran1 R Natarajan1

      1. Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai - 608 502, India
    • Dates


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