Effects of cadmium and zinc on Procambarus clarkii: Simulation of the Aznalcóllar mining spill

ML Martín-Díaz; SR Tuberty; CL McKenney-Jr; D Sales; TA Del-Valls

doi:10.7773/cm.v31i12.96

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Published: Mar 6, 2005

DOI: https://doi.org/10.7773/cm.v31i12.96

Keywords:

Aznalcóllar mining spill, heavy metals, crustaceans, gonadosomatic index, hepatosomatic index

ML Martín-Díaz

Facultad de Ciencias del Mar y Ambientales

SR Tuberty

University of West Florida

CL McKenney-Jr

US Environmental Protection Agency NHEERL

D Sales

Facultad de Ciencias del Mar y Ambientales

TA Del-Valls

Facultad de Ciencias del Mar y Ambientales

Abstract

Female red swamp crayfish, Procambarus clarkii, were exposed for 21 days in the laboratory to different dissolved concentrations of zinc (1000 µg L^–1 and 3000 µg L^–1) and cadmium (10 µg L^–1 and 30 µg L^–1), determined in the Guadiamar River after the Aznalcóllar mining spill (SW Spain). Female gonadosomatic and hepatosomatic indexes were analyzed at the end of the bioassay, and a general decrease in the gonadosomatic index and increase in the hepatosomatic index were observed in individuals at the same maturation stage, exposed to increasing heavy metal concentrations. Only the decrease in the gonadosomatic index values was significant at the highest zinc concentration. Decreases in gonadosomatic indexes were associated with reduced fecundity.

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Martín-Díaz, M., Tuberty, S., McKenney-Jr, C., Sales, D., & Del-Valls, T. (2005). Effects of cadmium and zinc on Procambarus clarkii: Simulation of the Aznalcóllar mining spill. Ciencias Marinas, 31(1B), 197–202. https://doi.org/10.7773/cm.v31i12.96

Issue

Vol. 31 No. 1B (2005)

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Research Article

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