Organochlorine compounds in a three-step terrestrial food chain |
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Authors: | Stephan Winter and Bruno Streit |
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Institution: | Zoologisches Institut, Siesmayerstrasse 70, D-6000, Frankfurt a.M., Federal Republic of Germany |
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Abstract: | The concentrations of 15 organochlorine chemicals (PCBs and pesticides) were studied in a Central European oak wood food chain system: Great tit (Parus major), caterpillars (Tortrix viridana, Operophtera brumata, Erannis defoliaria), and oak-leaves (Quercus robur). Juvenile tits receive organochlorines from the mother via egg transfer and, eventually to a greater extent, from the caterpillar food source during nestling period. The concentrations of PCB 153 (2,2′,4,4′,5,5′-hexachlorobiphenyl, the most abundant in this study) was found in leaf material at ca. 1 ng/g, in caterpillars 10 ng/g, and in bird eggs 170 ng/g on an average and on a dry mass basis. |
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Keywords: | Food chain bioaccumulation pesticides PCB DDT DDE DDD HCH birds Parus Quercus |
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