title: Levels of PCBs in Oysters Coming from Galicia Coast: Comparison to Mussels from the Same Region.
abstract: PCBs were analyzed in two species of oyster (Crassostrea gigas and Ostrea edulis) cultured in intertidal beds and rafts coming from the Galician Rías during the period 2011-2014. PCBs were also analyzed in mussel (Mytilus galloprovincialis) collected in the same Rías during 2011. The main objective of this work is to investigate the distribution of PCBs in Galician oysters and to study their suitability as bioindicator in comparison to mussels. The levels of ΣPCBs (ten congeners) ranged from 5.58 to 179.49 ng g(-1) d.w. The effect of biological parameters (shell length, lipid content and condition index) on bioaccumulation of PCBs was also evaluated. ANOVA showed a statistically significant difference between species for higher chlorinated biphenyls (CBs 153 and 138). The spatial patterns were investigated. Principal Component Analysis (PCA) showed differences between geographical areas (Rías Altas, Centrales and Baixas) in the distribution of PCBs.
authors.affiliation: Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Medio Rural e do Mar, Xunta de Galicia, Peirao de Vilaxoán s/n, 36611, Vilagarcía de Arousa, Spain. ncarro@intecmar.org.
authors.forename: N
authors.initials: N
authors.lastname: Carro
authors.affiliation: Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Medio Rural e do Mar, Xunta de Galicia, Peirao de Vilaxoán s/n, 36611, Vilagarcía de Arousa, Spain.
authors.forename: I
authors.initials: I
authors.lastname: García
authors.affiliation: Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Medio Rural e do Mar, Xunta de Galicia, Peirao de Vilaxoán s/n, 36611, Vilagarcía de Arousa, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Ignacio
authors.affiliation: Instituto Tecnolóxico para o Control do Medio Mariño de Galicia, INTECMAR, Consellería do Medio Rural e do Mar, Xunta de Galicia, Peirao de Vilaxoán s/n, 36611, Vilagarcía de Arousa, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Mouteira
mesh_terms: D000818:Animals; D004784:Environmental Monitoring / Q000379:methods; D020387:Food Chain; D059022:Food Safety; D049878:Mytilus / Q000378:metabolism*; D010125:Ostreidae / Q000378:metabolism*; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000378:metabolism; D013030:Spain; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls
keywords: Bioindicator; Biomonitor; Galician Rías; Mussel; Oyster; PCBs