title: Relationship between organochlorine pesticides and stress indicators in hawksbill sea turtle (Eretmochelys imbricata) nesting at Punta Xen (Campeche), Southern Gulf of Mexico.
abstract: Data on the impact of environmental pollution on the homeostasis of sea turtles remains scarce, particularly in the Southern Gulf of Mexico. As many municipalities along the coastline of the Yucatan Peninsula do not rely on a waste treatment plant, these organisms could be particularly vulnerable. We searched for relationships between the presence of organochlorine pesticides (OCP) and the level of several oxidative and pollutant stress indicators of the hawksbill sea turtle (Eretmochelys imbricata) during the 2010 nesting season at Punta Xen (Campeche, Mexico). Of the 30 sampled sea turtles, endosulfans, aldrin related (aldrin, endrin, dieldrin, endrin ketone, endrin aldehyde) and dichlorodiphenyldichloroethylene (DDT) families were detected in 17, 21 and 26, respectively. Significant correlation existed between the size of sea turtles with the concentration of methoxychlor, cholinesterase activity in plasma and heptachlors family, and catalase activity and hexachlorohexane family. Cholinesterase activity in washed erythrocytes and lipid peroxidation were positively correlated with glutathione reductase activity. Antioxidant enzyme actions seem adequate as no lipids damages were correlated with any OCPs. Future studies are necessary to evaluate the effect of OCPs on males of the area due to the significant detection of methoxychlor, which target endocrine functioning and increases its concentration with sea turtles size.
authors.affiliation: Instituto EPOMEX, Universidad Autónoma de Campeche, Campeche, Campeche, Mexico.
authors.forename: Nelly
authors.initials: N
authors.lastname: Tremblay
authors.affiliation: Instituto EPOMEX, Universidad Autónoma de Campeche, Campeche, Campeche, Mexico.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Ortíz Arana
authors.affiliation: Instituto EPOMEX, Universidad Autónoma de Campeche, Campeche, Campeche, Mexico.|Biología y Conservación de Vertebrados, Instituto de Ecología, A.C. Carretera antigua a Coatepec 351, El Haya, Xalapa, 91070, Veracruz, Mexico.
authors.forename: Mauricio
authors.initials: M
authors.lastname: González Jáuregui
authors.affiliation: Instituto EPOMEX, Universidad Autónoma de Campeche, Campeche, Campeche, Mexico. jarendon@uacam.mx.
authors.forename: Jaime
authors.identifier: http://orcid.org/0000-0002-3585-0211
authors.initials: J
authors.lastname: Rendón-von Osten
mesh_terms: D000818:Animals; D005260:Female; D060851:Gulf of America; D006843:Hydrocarbons, Chlorinated / Q000633:toxicity*; D008800:Mexico; D018384:Oxidative Stress / Q000187:drug effects*; D010575:Pesticides / Q000633:toxicity*; D014426:Turtles / Q000033:anatomy & histology / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014874:Water Pollutants, Chemical
keywords: Blood; Catalase; Cholinesterase; Glutathione reductase; Organochlorine; Sea turtle