title: Persistent organic pollutants in liver of Brazilian sharpnose shark (Rhizoprionodon lalandii) from southeastern coast of Brazil.
abstract: In the present study, persistent organic pollutants (POPs) were determined in 14 livers from specimens of the Brazilian sharpnose shark (Rhizoprionodon lalandii), which is an important economic resource for small-scale fisheries on the southeastern coast of Brazil. The following concentrations (lipid weight) of POPs were found: ∑PCBs: 1019±267 ng g(-1); ∑DDTs: 111±40 ng g(-1) and ∑PBDEs: 10.4±4.78. PCB 153 made the greatest contribution to ∑PCB (21.4%), followed by PCB 138 (14.6%) and PCB 180 (9.94%). Among chlorinated pesticides, only the p,p'-DDE and p,p'-DDD isomers had concentrations above the detection limit. Moreover, levels above the detection limit were found only for PBDE congeners 47 and 100 (BDEs 47>99). On average, BDE 47 accounted for 88% of the total PBDE load. The feeding habits of the Brazilian sharpnose shark close to the Brazilian coastline are likely the most important difference regarding the accumulation of POPs in comparison to oceanic species that feed in deeper waters. Thus, this species may be used to evaluate the pollution of coastal areas as well as human exposure to contaminants, as the Brazilian sharpnose shark is a frequently used for human consumption. Further studies in other areas of Brazil and involving other species are needed to clarify the mechanisms and potential impact of POPs, which can affect the biology of different organisms and cause population declines.
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: M J
authors.initials: MJ
authors.lastname: Cascaes
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: R T
authors.initials: RT
authors.lastname: Oliveira
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: M M
authors.initials: MM
authors.lastname: Ubarana
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: R M
authors.initials: RM
authors.lastname: Sato
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: P
authors.initials: P
authors.lastname: Baldassin
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: F I
authors.initials: FI
authors.lastname: Colabuono
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: J
authors.initials: J
authors.lastname: Leonel
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil. Electronic address: satie@usp.br.
authors.forename: S
authors.initials: S
authors.lastname: Taniguchi
authors.affiliation: Laboratório de Química Orgânica Marinha, Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
authors.forename: R R
authors.initials: RR
authors.lastname: Weber
mesh_terms: D000818:Animals; D001938:Brazil; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D005260:Female; D005506:Food Contamination; D055768:Halogenated Diphenyl Ethers / Q000032:analysis; D006801:Humans; D008099:Liver / Q000737:chemistry*; D008297:Male; D010575:Pesticides / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis; D012754:Sharks; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D055768:Halogenated Diphenyl Ethers; D010575:Pesticides; D014874:Water Pollutants, Chemical; C511295:2,2',4,4'-tetrabromodiphenyl ether; D003633:Dichlorodiphenyl Dichloroethylene; C410127:PCB 180; C029790:2,2',3',4,4',5-hexachlorobiphenyl; D011078:Polychlorinated Biphenyls; C014024:2,4,5,2',4',5'-hexachlorobiphenyl
keywords: Brazilian sharpnose shark; Chlorinated pesticides; Liver; PBDEs; PCBs; Southeastern coast of Brazil