title: POPs in the South Latin America: Bioaccumulation of DDT, PCB, HCB, HCH and Mirex in blubber of common dolphin (Delphinus delphis) and Fraser's dolphin (Lagenodelphis hosei) from Argentina.
abstract: Organic compounds, in particular organochlorines, are highly persistent compounds which accumulate in biotic and abiotic substrates. Marine mammals bioaccumulate and biomagnify persistent organic pollutants (POPs) through diet. ∑PCB (26 PCB congeners), ∑DDT (pp-DDT, pp-DDD, pp-DDE), ∑HCH (α-HCH, β-HCH, γ-HCH, δ-HCH), HCB and mirex were analyzed from samples of subcutaneous adipose tissue of common dolphins, Delphinus delphis, and Fraser's dolphins, Lagenodelphis hosei, obtained in 1999 and 2012. The aim of this study was to determine the concentrations of POPs to get baseline information on the current state of pollution by these compounds in these two species in South Atlantic. At the same time, to assess concentrations of POPs in relation to age, the total length and sexual maturity in common dolphins. Organochlorine pesticides dominated Fraser's dolphins, DDT being the most abundant, while PCBs were mostly present in common dolphins. In both species, the distributions of isomers or metabolites followed the order: β-HCH>δ-HCH>γ-HCH>α-HCH and pp-DDE>pp-DDD>pp-DDT. As for ∑PCB, the largest contribution was given by congeners of high molecular weight, particularly by hexa and hepta - CBs. Common dolphins did not show effects on sexual maturity, age and standard length in the concentration of organochlorines. The mean concentrations found in this study are lower compared to those reported in other studies performed in dolphins elsewhere. This study provides new information regarding levels of organochlorines in common dolphins for the Southwestern Atlantic.
authors: Centro para el Estudio de Sistemas Marinos (CESIMAR), Centro Nacional Patagónico, CONICET, Bv. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina; Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Bv. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina. Electronic address: kily@cenpat-conicet.gob.ar.
authors: Cristian Alberto
authors: CA
authors: Durante
authors: Laboratório de Mamíferos Aquáticos e Bioindicadores Professora Izabel Gurgel (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Brazil. Electronic address: neto.vet@gmail.com.
authors: Elitieri Batista
authors: EB
authors: Santos-Neto
authors: Laboratório de Mamíferos Aquáticos e Bioindicadores Professora Izabel Gurgel (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Brazil. Electronic address: alexandre.maqua@gmail.com.
authors: Alexandre
authors: A
authors: Azevedo
authors: Centro para el Estudio de Sistemas Marinos (CESIMAR), Centro Nacional Patagónico, CONICET, Bv. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina; Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Bv. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina. Electronic address: kike@cenpat-conicet.gob.ar.
authors: Enrique Alberto
authors: EA
authors: Crespo
authors: Laboratório de Mamíferos Aquáticos e Bioindicadores Professora Izabel Gurgel (MAQUA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Brazil. Electronic address: lailson@uerj.br.
authors: José
authors: J
authors: Lailson-Brito
mesh_terms: D000367:Age Factors; D000818:Animals; D001118:Argentina; D001267:Atlantic Ocean; D049628:Body Size; D050696:Common Dolphins / Q000378:metabolism; D004289:Dolphins / Q000378:metabolism*; D005260:Female; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism*; D008297:Male; D010575:Pesticides / Q000378:metabolism*; D012741:Sexual Maturation; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D014874:Water Pollutants, Chemical
keywords: Bioaccumulation; Cetaceans; Organochlorine; Pollution; South America