|
|||||
|
|
Field accumulative behavior of organochlorine pesticides. The role of crabs and sediment characteristics in coastal environments |
|
| Authors: | Menone Mirta L Miglioranza Karina S B Botto Florencia Iribarne Oscar Aizpún de Moreno Julia E Moreno Víctor J |
| Institution: | aLaboratorio de Ecotoxicología, Departamento de Ciencias Marinas (FCEyN), Universidad Nacional de Mar del Plata, Funes 3350, 7600 Mar del Plata, Buenos Aires, Argentina bConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina cDepartamento de Biología (FCEyN), Universidad Nacional de Mar del Plata, CC 573 Correo Central, 7600 Mar del Plata, Argentina |
| Abstract: | The influence of intertidal crab beds on the concentrations of organochlorine (OC) pesticides in sediment was studied in two different coastal environments in Argentina. Samples of male burrowing crabs (Chasmagnathus granulatus) were collected for this study. Our field data showed lower bioaccumulation of OC pesticides in crabs from sediments with a higher total organic carbon (TOC) and higher clay content. Thus, concentrations in crabs depend on the physico-chemical characteristics of the sediment where they live more than on the OC pesticide concentrations in the environment. The distribution patterns in sediment from inside and outside crab burrows were similar for both coastal areas being HCHs  γ-chlordane > p,p′-DDE for San Antonio Bay (SAO), and HCHs > p,p′-DDE γ-chlordane for Mar Chiquita (MCh) coastal lagoon. OC pesticide concentrations in sediment were significantly lower inside than outside crab burrows, irrespective of the sediment physico-chemical characteristics due to the bioturbation activity of C. granulatus. |
| Keywords: | Estuaries Chasmagnathus granulatus Sediment Organochlorine pesticides |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |