Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan; University of Gondar, Faculty of Natural and Computational Science, Department of Chemistry, P.O. Box 196, Gondar, Ethiopia.
Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan.
Environ Pollut. 2014 Sep;192:121-8. doi: 10.1016/j.envpol.2014.05.007. Epub 2014 Jun 6.
Organochlorine pesticides (OCPs) and stable isotopes were measured in muscle from 4 bird and 5 fish species from the Ethiopian Rift Valley region where DDT is used for malaria control and vast agricultural activities are carried out. We investigated the bioaccumulation of OCPs such as DDTs, HCHs, chlordanes, and heptachlors between the species, and examined the potential risk posed by these compounds for bird species. Significant differences in contaminant profiles and levels were observed within the species. Levels of total OCPs ranged from 3.7 to 148.7 μg/g lipid in bird and 0.04 to 10.9 μg/g lipid in fish species. DDTs were the predominant contaminant, and a positive relationship between δ(15)N and ΣDDT concentrations was found. The main DDT metabolite, p,p'-DDE was the most abundant and significantly greater concentrations in bird species (up to 138.5 μg/g lipid), which could have deleterious effects on survival and/or reproduction of birds.
在使用滴滴涕（DDT）进行疟疾控制和开展大规模农业活动的埃塞俄比亚裂谷地区，采集了 4 种鸟类和 5 种鱼类的肌肉样本，检测了其中的有机氯农药（OCPs）和稳定同位素。我们研究了不同物种间 DDTs、六氯环己烷（HCHs）、氯丹和七氯等 OCPs 的生物累积情况，并考察了这些化合物对鸟类物种构成的潜在风险。在所研究的物种内，污染物特征和水平存在显著差异。鸟类样本中总 OCPs 的浓度范围为 3.7 至 148.7μg/g 脂质，鱼类样本中为 0.04 至 10.9μg/g 脂质。DDTs 是主要污染物，且 δ(15)N 值与ΣDDT 浓度之间呈正相关关系。DDTs 的主要代谢物 p,p'-DDE 丰度最高，且在鸟类物种中的浓度显著更高（高达 138.5μg/g 脂质），这可能对鸟类的生存和/或繁殖产生有害影响。
