Cd, Cu, Hg and Pb, and Organochlorines Pesticides in Commercially Important Benthic Organisms Coastal Lagoons SW Gulf of Mexico

摘要

'The objective of this study was to determine the concentrations of insecticides (DDT and their metabolites) and heavy metals (Cd, Pb, Cu and Hg) in benthic organisms such as oysters, crab and shrimp. The studies were carried out in six lagoon systems along the Gulf of Mexico: Madre, Tamiahua, Grande, Mandinga, Alvarado and Mecoacán. The sampling sites in each lagoon system were selected in the areas of commercial fishing. The levels of pesticides in oysters and crabs indicated they were in constant contact with these compounds, which are used in livestock, agricultural and aquacultural activities, and in the efforts carried out in adjoining zones to control the vectors of dengue and malaria. The concentration ranking of heavy metals in F. aztecus in the Tamiahua system was Cu > Cd > Pb, while for L. setiferus in the Alvarado system it was Pb > Cd > Hg.