title: Organochlorine compounds (polychlorinated biphenyls and pesticides) and polycyclic aromatic hydrocarbons in populations of Hexaplex trunculus affected by imposex in the lagoon of Venice, Italy.
abstract: Concentrations of polychlorinated biphenyls (PCBs), organochlorine pesticides, and polycyclic aromatic hydrocarbons (PAHs) were measured in gastropods from the Lagoon of Venice, Italy. The visceral coil and the rest of the soft body of organisms (Hexaplex trunculus) sampled at two stations inside the lagoon and three stations on the seaward side were analyzed to evaluate their contamination levels. Preferential accumulation of PCBs and pesticides in the visceral coil (>80%) compared with the rest of the soft body was observed, whereas on average, PAHs showed no preferential partitioning. Differences between levels of organochlorine contaminants in the gastropods highlighted a gradient of pollution from the stations inside the lagoon (PCBs, 45-363 ng/g; pesticides, 4-51 ng/g) to the sea (PCBs, 13-131 ng/g; pesticides, 2-29 ng/g). The possible role of the three classes of contaminants, in addition to that of organotin compounds (OTCs), previously analyzed in the same samples, in causing one of the anatomic modifications because of imposex in this gastropod also was studied. A modeling approach by partial least squares (PLS) in latent variables was applied to explain the penis length of imposex-affected females with concentrations of organic pollutants. The synergistic role of PCBs, pesticides, and OTCs was evidenced, whereas the contribution of PAHs appeared to be very low.
authors.affiliation: Department of Environmental Sciences, University of Venice, Calle Larga S. Marta 2137, 30123 Venice, Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Maran
authors.forename: Elena
authors.initials: E
authors.lastname: Centanni
authors.forename: Francesca
authors.initials: F
authors.lastname: Pellizzato
authors.forename: Bruno
authors.initials: B
authors.lastname: Pavoni
mesh_terms: D000818:Animals; D012734:Disorders of Sex Development / Q000139:chemically induced; D052244:Endocrine Disruptors / Q000493:pharmacokinetics; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000493:pharmacokinetics*; D049851:Gastropoda / Q000033:anatomy & histology / Q000502:physiology; D006843:Hydrocarbons, Chlorinated / Q000493:pharmacokinetics; D007558:Italy; D010575:Pesticides / Q000493:pharmacokinetics*; D011078:Polychlorinated Biphenyls / Q000493:pharmacokinetics*; D011084:Polycyclic Aromatic Hydrocarbons / Q000493:pharmacokinetics*; D014018:Tissue Distribution
chemical_list: D052244:Endocrine Disruptors; D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D011084:Polycyclic Aromatic Hydrocarbons; D011078:Polychlorinated Biphenyls