Chen Da, Zhang Xiulan, Mai Bixian, Sun Quanhui, Song Jie, Luo Xiaojun, Zeng Eddy Y, Hale Robert C
Department of Environmental and Aquatic Animal Health, Virginia Institute of Marine Science, The College of William and Mary, 1208 Greate Road, Gloucester Point, VA 23062, USA.
Environ Pollut. 2009 Jul;157(7):2023-9. doi: 10.1016/j.envpol.2009.02.027. Epub 2009 Mar 12.
Little data are available on organochlorine contamination in Chinese terrestrial birds of prey. This study examined the presence of PCBs, DDTs and other organochlorine pesticides in various raptors from northern China. DDE exhibited the highest concentrations among targeted compounds. Greatest levels (23.5-1020 mg/kg lipid weight) were observed in Eurasian sparrowhawks. This may be due to their stopover in southeastern China, where high DDT and dicofol applications have been documented. Residential kestrels exhibited much lower DDE, but similar PCB and HCH concentrations. SigmaTEQs and PCB-126/-77 concentration ratios exhibited significant positive correlations with SigmaPCB concentrations, respectively. Similar results were also demonstrated by a meta-analysis of previously published data across avian species. Possible hepatic sequestration of coplanar PCB-77, -126, -169 and -118 was observed as liver TEQs increased in Eurasian sparrowhawks. These observations may indicate an induction of CYP1A enzymes, as a result of elevated contamination in some species.
关于中国陆地猛禽体内有机氯污染的相关数据较少。本研究检测了中国北方多种猛禽体内多氯联苯（PCBs）、滴滴涕（DDTs）及其他有机氯农药的存在情况。在所检测的化合物中，DDE的浓度最高。在雀鹰中观察到了最高水平（脂质重量为23.5 - 1020毫克/千克）。这可能是由于它们在中国东南部中途停留，而据记载该地区曾大量使用滴滴涕和三氯杀螨醇。普通红隼体内的DDE含量要低得多，但多氯联苯和六氯环己烷（HCH）的浓度相似。毒性当量总和（SigmaTEQs）和多氯联苯-126/-77浓度比分别与多氯联苯总量（SigmaPCB）浓度呈现出显著的正相关。对先前发表的鸟类物种数据进行的荟萃分析也得出了类似结果。随着雀鹰肝脏毒性当量增加，观察到可能存在共平面多氯联苯-77、-126、-169和-118在肝脏中的蓄积。这些观察结果可能表明，某些物种由于污染加剧，诱导了细胞色素P450 1A（CYP1A）酶的产生。
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