Guitart Raimon, Clavero Raquel, Mateo Rafael, Máñez Manuel
Laboratory of Toxicology, Faculty of Veterinary, Universitat Autònoma de Barcelona, Bellaterra, Spain.
J Environ Sci Health B. 2005;40(5):753-60. doi: 10.1080/03601230500189394.
Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) residue levels were determined in 53 unhatched eggs from greater roseus flamingos (Phoenicopterus ruber). Eggs were collected in 1996 from the National Park of Doñana (Guadalquivir marshes, Southwest Spain), immediately after one breeding colony abandoned the nesting site due to predator attacks. The main metabolite of p,p'-DDT, p,p'-DDE, was the OCP residue found at higher concentrations, with a geometric mean of 721 ng/g wet weight. Residues of other pesticides, including some hexachlorocyclohexane isomers, hexachlorobenzene, aldrin, heptachlor, and heptachlor-epoxide, were detected at much lower concentrations. The sum of PCBs was 528 ng/g, with PCB congeners #187 and #153 being the most prominent in eggs. The pattern observed in these compounds of industrial origin corresponded more to Aroclor 1260 than to any other commercial mixture. Levels of organochlorine residues indicate a medium degree of exposure, and they are not considered of any concern for the flamingo population. In particular, neither p,p'-DDE nor PCB levels were found to be correlated with the eggshell thickness.
测定了53枚大火烈鸟（Phoenicopterus ruber）未孵化蛋中的有机氯农药（OCPs）和多氯联苯（PCBs）残留水平。这些蛋于1996年从多尼亚纳国家公园（西班牙西南部瓜达尔基维尔河沼泽地）采集，当时一个繁殖群体因捕食者攻击而放弃筑巢地点后立即进行了采集。p,p'-滴滴涕的主要代谢产物p,p'-滴滴伊是浓度较高的有机氯农药残留，湿重几何平均值为721纳克/克。还检测到其他农药残留，包括一些六氯环己烷异构体、六氯苯、艾氏剂、七氯和环氧七氯，但其浓度要低得多。多氯联苯的总量为528纳克/克，其中多氯联苯同系物#187和#153在蛋中最为突出。在这些工业源化合物中观察到的模式与Aroclor 1260更为相符，而非任何其他商业混合物。有机氯残留水平表明存在中等程度的暴露，不过它们并不被认为会对火烈鸟种群造成任何影响。特别是，未发现p,p'-滴滴伊或多氯联苯水平与蛋壳厚度相关。
