title: Organochlorine Pesticides (OCPs) in Sediment and Fish of Two Tropical Water Bodies Under Different Land Use.
abstract: In this study we quantified and compared bioaccumulated OCPs in target fish species Cichlasoma urophthalmus (Mayan cichlid) and Oreochromis niloticus (Nile tilapia) and sediment in two lentic systems neighboring areas with different land use (Xnoha = agricultural/Mocu = nature reserve). Fish at both sites showed the same number of pesticide compounds (17) while in sediment were 17 and 20, respectively. ∑chlordane concentrations were significantly higher in Xnoha in both fish and sediment (1.0 and 0.17 µg/g, respectively). Here higher concentrations of o,p'DDT were found in fish than in sediments, this was similarly demonstrated in Mocu but to a lesser extent. The proportion of endosulfan sulfate was lower in Xnoha (<20 %) than in Mocu (<50 %) compared to the original product. Detected concentrations of ∑DDT and chlordane exceed international permissible limits. Results indicate that OCPs were present in both aquatic systems regardless of the differences in land use.
authors.affiliation: Laboratorio en Biodiversidad, Área de Ecología Acuática, CEDESU, Universidad Autónoma de Campeche, Av. Héroe de Nacozari No. 480, 24079, San Francisco de Campeche, Campeche, Mexico.
authors.forename: Demián
authors.initials: D
authors.lastname: Hinojosa-Garro
authors.affiliation: Laboratorio en Biodiversidad, Área de Ecología Acuática, CEDESU, Universidad Autónoma de Campeche, Av. Héroe de Nacozari No. 480, 24079, San Francisco de Campeche, Campeche, Mexico.
authors.forename: Adriana M
authors.initials: AM
authors.lastname: Burgos Chan
authors.affiliation: Área de Contaminación e Impacto Ambiental, Instituto EPOMEX, Universidad Autónoma de Campeche, Av. Héroe de Nacozari No. 480, 24079, San Francisco de Campeche, Campeche, Mexico. jarendon@uacam.mx.
authors.forename: Jaime
authors.initials: J
authors.lastname: Rendón-von Osten
mesh_terms: D000383:Agriculture; D000818:Animals; D003634:DDT / Q000032:analysis / Q000378:metabolism; D004726:Endosulfan / Q000031:analogs & derivatives / Q000032:analysis / Q000378:metabolism; D005399:Fishes / Q000378:metabolism*; D019015:Geologic Sediments / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000378:metabolism; D010575:Pesticides / Q000032:analysis* / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014874:Water Pollutants, Chemical; C544689:endosulfan sulfate; D003634:DDT; C016340:o,p'-DDT; D004726:Endosulfan
keywords: Bentivorous; Bioaccumulation; Campeche; Fish; OCPs; Water bodies