Young R W, Ridgely S L, Blue J T, Bache C A, Lisk D J
J Toxicol Environ Health. 1986;19(1):91-6. doi: 10.1080/15287398609530909.
Woodchucks (Marmota monax) were fed crown vetch (Coronilla varia) growing along a major highway that was harvested in 1979, before unleaded gas was widely used, and again in 1985. Crown vetch, harvested 300 m from the nearest road, was fed as the control. The crops were fed as 50% dry weight of the diet for 58 d. The concentrations of lead in the control, 1979 crop, and 1985 crop were, respectively, 0.74, 50.65, and 6.78 ppm dry weight. The average +/- SE) concentrations (ppm, dry weight) of lead found in the tissues of the control, 1979, and 1985 dietary-treatment animals were, respectively, kidney, 0.36 +/- 0.05, 5.78 +/- 0.72, and 0.79 +/- 0.09; liver, 0.09 +/- 0.01, 4.71 +/- 0.17, and 0.46 +/- 0.06; muscle, 0.07 +/- 0.01, 0.14 +/- 0.02, and 0.07 +/- 0.00; blood, 0.09 +/- 0.02, 2.17 +/- 0.13, and 0.31 +/- 0.05; and bone, 1.27 +/- 0.25, 47.52 +/- 7.05, and 3.71 +/- 0.65. No significant differences (p greater than 0.05) between dietary treatments were found in the general hematological analyses of the woodchucks. The ecological significance of these findings is discussed.
在1979年（无铅汽油尚未广泛使用时）以及1985年，分别给土拨鼠（旱獭属）喂食沿着一条主要公路生长的小冠花。从距离最近道路300米处收割的小冠花用作对照。将这些作物以饮食干重的50%投喂58天。对照作物、1979年作物和1985年作物中的铅浓度分别为0.74、50.65和6.78 ppm干重。在对照、1979年和1985年饮食处理组动物组织中发现的铅平均浓度（ppm，干重）分别为：肾脏，0.36±0.05、5.78±0.72和0.79±0.09；肝脏，0.09±0.01、4.71±0.17和0.46±0.06；肌肉，0.07±0.01、0.14±0.02和0.07±0.00；血液，0.09±0.02、2.17±0.13和0.31±0.05；骨骼，1.27±0.25、47.52±7.05和3.71±0.65。在对土拨鼠进行的一般血液学分析中，饮食处理之间未发现显著差异（p大于0.05）。讨论了这些发现的生态意义。
