title: Organochlorine Pesticides (OCPs) in raft mussels coming from Galician rías.
abstract: This survey gives an overview of the range of organochlorine pesticides (OCPs) α and γ-HCH (lindane), HCB, pp´-DDE, pp´-DDD, op´-DDT, pp´-DDT, aldrin, dieldrin, endrin, isodrin and trans-nonachlor in raft mussels cultivated in several polygons of the Galician Rías (Ares-Betanzos, Muros-Noia, Arousa, Pontevedra and Vigo) during the period 1998-2014. A significant number of OCPs were detected, but the levels found were generally low, mainly in the recent samplings (2010-2014). The levels of ∑DDs (sum of DDTs and its metabolites, pp´-DDE and pp´-DDD) ranged between 0.22 ng/g dry weight (dw) in samples from the Ría of Pontevedra and 46.4 ng/g dw in mussels from the Ría of Arousa. Both aldrin and endrin were not detected or were below the analytical limits of detection. With regard to other pesticides, dieldrin is the major compound, followed by γ-HCH, isodrin, α-HCH and transnonachlor. Significant ANOVA regressions indicated variations in levels of some OCPs with the biological parameters (lipid, condition index and shell length). Univariate and multivariate analysis of OCP levels revealed no significant differences between Rías. Temporal trends showed an important decline of OCPs in the studied samples during the period 1998-2014.
authors.affiliation: a Contaminación Química , Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Mar , Xunta de Galicia , Vilagarcía de Arousa , Spain.
authors.forename: Nieves
authors.initials: N
authors.lastname: Carro
authors.affiliation: a Contaminación Química , Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Mar , Xunta de Galicia , Vilagarcía de Arousa , Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: García
authors.affiliation: a Contaminación Química , Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Mar , Xunta de Galicia , Vilagarcía de Arousa , Spain.
authors.forename: María
authors.initials: M
authors.lastname: Ignacio
authors.affiliation: a Contaminación Química , Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Mar , Xunta de Galicia , Vilagarcía de Arousa , Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Mouteira
mesh_terms: D000818:Animals; D049872:Bivalvia / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D005506:Food Contamination; D006843:Hydrocarbons, Chlorinated / Q000737:chemistry*; D010575:Pesticides / Q000737:chemistry*; D013030:Spain; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014874:Water Pollutants, Chemical
keywords: Galician Rías; OCPs; Raft mussel; temporal trends