Liver histological changes and lipid peroxidation in the amphibian Ambystoma mexicanum induced by sediment elutriates from the Lake Xochimilco

作     者：Esperanza Ortiz-Ordonez Eugenia López-López Jacinto Elías Sedeno-Díaz Esther Uría Ignacio Andrés Morales María Estela Pérez Mineko Shibayama 

作者机构：Instituto Politécnico NacionalDepto.de Formación Básica e InterdisciplinariaCICS-USTAv.de los Maestros s/n.Col.Sto Instituto Politécnico NacionalLaboratorio de Evaluación de la Salud de Ecosistemas AcuáticosENCBProl.de Carpio y Plan de Ayala s/n.Col.Sto Instituto Politécnico NacionalCoordinación Politécnica para la SustentabilidadEdificio de la Biblioteca Nacional3er PisoAv.Instituto Politécnico Nacional s/nesq.Wilfrido MassieuCol Instituto Politécnico NacionalLaboratorio de HistologíaENCBProl.de Carpio y Plan de Ayala s/n.Col.Sto Unidad de Servicio Académico AcuarioBiologíaFacultad de CienciasUniversidad Autónoma de MéxicoCiudad Universitaria Laboratorio de InfectómicaCentro de Investigación y de Estudios Avanzados del IPNAv.Instituto Politécnico Nacional 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2016年第28卷第8期

页      面：156-164页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：the Institute of Science and Technology of the Federal District ICy TDF/325/2011 the Secretariat of Research and Posgrade(SIP 20131069 of the Instituto Politécnico Nacional)through their economic support for this study 

主　　题：Elutriates Amphibian Liver Histological alterations Ultrastructure Oxidative stress Metals Urban lake 

摘      要：Lacustrine sediments accumulate pollutants that input from the lake watershed and can be released to the water column by sediment resuspension; thus, pollutants can change their bioavailability and exert adverse effects to aquatic biota. Shallow-urban lakes are particularly susceptible to receive pollutants from urban discharges and sediment resuspension. Lake Xochimilco, in Mexico City, an urban-shallow lake, faces multiple problems： urban sprawl, overexploitation of aquifers, drying of springs, discharge of wastewater from treatment plants, and sediment resuspension. The aquatic biota living in this ecosystem is continuously exposed to the release of pollutants from the sediments. We assessed the risk that pollutants released from sediments from Lake Xochimilco, Touristic（TZ） and Agriculture zone（AZ）, can exert on a native amphibian species of the lake（Ambystoma mexicanum） through exposure bioassays to sediment elutriates. We evaluate alterations in the amphibian by three approaches： biochemical（level of lipid peroxidation,LPO）, cellular（ultrastructure） and the liver histology of A. mexicanum and we compare them with a batch control. Additionally, we assessed heavy metals（Pb, Cd and Hg） in *** from TZ showed the highest concentrations of the metals assessed. Organisms exposed to sediment elutriates from either study sites showed higher LPO values than control organisms（p 〈 0.05）. Organisms exposed to elutriates from the TZ showed the most conspicuous damages： hepatic vasodilation of sinusoids, capillaries with erythrocytes,leukocyte infiltration and cytoplasmic vacuolation in hepatocytes. The biological responses assessed reflected the risk that faces A. mexicanum when is exposed for prolonged periods to sediment resuspension in Lake Xochimilco.