The environmental impact of shrimp aquaculture and the coastal pollution in Mexico

Heavy metals and DNA damage in blood cells of insectivore bats in coal mining areas of Catarinense coal basin, Brazil.

Comparative bioavailability of trace metals using three filter-feeder organisms in a subtropical coastal environment (Southeast Gulf of California)

Concentration and distribution of heavy metals in tissues of wild and farmed shrimp Penaeus vannamei from the northwest coast of Mexico

Essential elements and contaminants in edible tissues of European and American lobsters

Trace metal concentrations (Fe, Mn, Ni, Cu, Co, Cd, Cr and Zn) have been measured in estuarine and marine shrimp P. stylirostris collected in the Pacific coast of Mexico. Estuarine individuals (juveniles) had higher concentrations of Fe and Mn than marine individuals (adults). Size-dependent relationships were observed and differed among the elements examined. A negative slope was found for Co, Fe, Mn and Ni in estuarine juvenile shrimps, while for Cu the opposite tendency occurred. In marine adults a positive slope was observed for Cd, Co, Cr and Cu. These findings may be due to two factors: (1) that P. stylirostris spends part of its life-cycle in estuarine/lagoon environments where it is more likely to be exposed to higher levels of bioavailable trace metals (natural and anthropogenic contributions) and/or (2) different metabolic requirements of young and older specimens, which is especially applicable to copper.

C Ruiz-Fernández

Papers

Comparative bioaccumulation of trace metals in Penaeus stylirostris in estuarine and coastal environments