title: Accumulation features of persistent organochlorines in resident and migratory birds from Asia.
abstract: Concentrations of organochlorine contaminants including polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs), hexachlorocyclohexane isomers (HCHs), chlordane compounds (CHLs), hexachlorobenzene (HCB) were determined in the resident and migratory birds, which were collected from India, Japan, Philippines, Russia (Lake Baikal) and Vietnam. Accumulation patterns of organochlorine concentrations in resident birds suggested that the predominant contaminants of each country were as follows: Japan--PCBs Philippines--PCBs and CHLs, India--HCHs and DDTs, Vietnam--DDTs, and Lake Baikal--PCBs and DDTs. The migratory birds from Philippines and Vietnam retained mostly the highest concentrations of DDTs among the organochlorines analyzed, indicating the presence of stopover and breeding grounds of those birds in China and Russia. On the other hand, migratory birds from India and Lake Baikal showed different patterns of organochlorine residues, reflecting that each species has inherent migratory routes and thus has exposure to different contaminants. Species which have breeding grounds around the Red Sea and Persian Gulf showed high levels of PCBs, indicating the presence of areas heavily polluted by PCBs in the Middle East.
authors.affiliation: Center for Marine Environmental Studies, Ehime University, Tarumi 3-5-7, 790-8566, Matuyama, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Kunisue
authors.forename: Mafumi
authors.initials: M
authors.lastname: Watanabe
authors.forename: Annamalai
authors.initials: A
authors.lastname: Subramanian
authors.forename: Alagappan
authors.initials: A
authors.lastname: Sethuraman
authors.forename: Alexei M
authors.initials: AM
authors.lastname: Titenko
authors.forename: Vo
authors.initials: V
authors.lastname: Qui
authors.forename: Maricar
authors.initials: M
authors.lastname: Prudente
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Tanabe
mesh_terms: D025041:Animal Migration; D000818:Animals; D001208:Asia; D001717:Birds / Q000378:metabolism*; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D013045:Species Specificity
chemical_list: D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues