Effects of Chlorpyrifos and Endosulfan on Different Life Stages of the Freshwater Burrowing Crab Zilchiopsis collastinensis P.: Protective Role of Chorion

NEGRO, CARLOS LEANDRO; SENKMAN, LIDIA ELOISA; MARINO, FERNANDA; LORENZATTI, EDUARDO; COLLINS, PABLO

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

SPRINGER

Lugar: Berlin; Año: 2014 p. 625 - 630

0007-4861

The lethality (LC50) of endosulfan and chlorpyrifos is higher in adults (1990 and 156.78 µg/l respectively) than in embryos (95380 and 1242.54 µg/l respectively) of the crab Zilchiopsis collastinensis. The thickened embryonic coat of the freshwater species might isolate the embryo inside the egg, reducing the toxicity. Sublethal concentrations of chlorpyrifos and endosulfan caused an increase in hatching time and a decrease in effective hatching (p