Efectos de cadmio y zinc en "Procambarus clarkii"simulación del accidente minero de Aznalcóllar

  1. M.L. Martín Díaz 1
  2. S.R. Tuberty 2
  3. C.L. McKenney Jr 3
  4. D. Sales 1
  5. T.A. Del Valls 1
  1. 1 Universidad de Cádiz
    info

    Universidad de Cádiz

    Cádiz, España

    ROR https://ror.org/04mxxkb11

  2. 2 University of West Florida
    info

    University of West Florida

    Pensacola, Estados Unidos

    ROR https://ror.org/002w4zy91

  3. 3 US Environmental Protection Agency NHEERL
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Revue:
Ciencias marinas

ISSN: 0185-3880,  2395-9053

Année de publication: 2005

Volumen: 31

Número: 1

Pages: 197-202

Type: Article

DOI: 10.7773/CM.V31I12.96 DIALNET GOOGLE SCHOLAR lock_openAccès ouvert editor

D'autres publications dans: Ciencias marinas

Résumé

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.

La source de données: Dialnet