Acute toxicity of copper (Cu 2+ ) on postlarvae of river prawn Cryphiops caementarius (Natantia, Palaemonidae)
DOI:
https://doi.org/10.15381/rpb.v14i1.1758Keywords:
Acute toxicity, copper, LC50, Cryphiops caementarius postlarvae, Cryphiops caementarius postlarvae.Abstract
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 pollut- ant (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).Downloads
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Copyright (c) 2007 Raúl Mendoza-Rodríguez
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