title: Insecticide pyrethroids in liver of striped dolphin from the Mediterranean Sea.
abstract: Pyrethroid pesticides were analysed in liver of striped dolphin (Stenella coeruleoalba) from the Alboran Sea (south of Spain, Mediterranean Sea). The occurrence and bioaccumulation of pyrethroid insecticides in marine mammal tissues from the northern hemisphere had never been determined before. Pyrethroids were detected in 87% of the specimens with a mean total concentration of 300 ng g-1lw ± 932 (range 2.7-5200 ng g-1lw). Permethrin and tetramethrin were the main contributors to the pyrethroid profiles, with enantiospecific accumulation for the first and isomer specific accumulation for the latter. Bioaccumulation of pyrethroids was unlike that of persistent organic pollutants (POPs), as pyrethroid concentrations were not correlated to the maturity stage of the specimens. Concentrations slightly increased from calves to juveniles, whereas juveniles presented similar concentrations to adults. Metabolization of pyrethroids after achieving sexual maturity might account for this pattern.
authors.affiliation: Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research Studies (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: oaaqam@cid.csic.es.
authors.forename: Òscar
authors.initials: Ò
authors.lastname: Aznar-Alemany
authors.affiliation: Department of Conservation Biology, Estación Biológica de Doñana (EBD), Spanish Council for Scientific Research (CSIC), Americo Vespucio s/n, Isla Cartuja, 41092, Seville, Spain. Electronic address: joan.gimenez@csic.es.
authors.forename: Joan
authors.initials: J
authors.lastname: Giménez
authors.affiliation: Conservation, Information and Research on Cetaceans (CIRCE), Cabeza de Manzaneda 3, Algeciras-Pelayo, 11390 Cádiz, Spain. Electronic address: renaud@stephanis.org.
authors.forename: Renaud
authors.initials: R
authors.lastname: de Stephanis
authors.affiliation: Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research Studies (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: eeeqam@cid.csic.es.
authors.forename: Ethel
authors.initials: E
authors.lastname: Eljarrat
authors.affiliation: Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research Studies (IDAEA), Spanish Council for Scientific Research (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), H(2)O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003 Girona, Spain. Electronic address: dbcqam@cid.csic.es.
authors.forename: Damià
authors.initials: D
authors.lastname: Barceló
mesh_terms: D000818:Animals; D004784:Environmental Monitoring; D007306:Insecticides / Q000032:analysis / Q000378:metabolism*; D008099:Liver / Q000737:chemistry / Q000378:metabolism*; D008522:Mediterranean Sea; D026023:Permethrin / Q000378:metabolism; D011722:Pyrethrins / Q000032:analysis / Q000378:metabolism*; D013030:Spain; D050706:Stenella / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D007306:Insecticides; D011722:Pyrethrins; D014874:Water Pollutants, Chemical; D026023:Permethrin; C009424:tetramethrin
keywords: Enantiomer; Hotspot; Marine mammal; Pesticide