Abstract

MENDOZA-RODRIGUEZ, Raúl. Acute toxicity of copper (Cu²⁺) on postlarvae of river prawn Cryphiops caementarius (Natantia, Palaemonidae). Rev. peru biol. [online]. 2007, vol.14, n.1, pp.53-54. ISSN 1727-9933.

Copper toxicity is evaluated on the river prawn postlarvae, Cryphiops caementarius, using acute toxicity tests, to determine lethal concentration (96-LC50). The postlarvae were very sensitive to copper with 96-LC50 values of 0,546 mg.l-1. Survival and swimming activity diminish with the increase of copper concentrations. Concentrations of 1,0 and 2,0 mg.l-1 were dangerously pollutant (63,3 and 100% mortality for 96 h), concentrations of 0,16 and 0,25 mg.l-1 were tolerable (0% mortality for 48 h).

Keywords : Acute toxicity; copper; LC50; Cryphiops caementarius postlarvae.

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