Cade T J, Lincer J L, White C M, Roseneau D G, Swartz L G
Science. 1971 May 28;172(3986):955-7. doi: 10.1126/science.172.3986.955.
Eggshell thickness after exposure to DDT was reduced by 21.7 percent in Alaskan tundra peregrines, by 16.8 percent in taiga peregrines, by 7.5 percent in Aleutian peregrines, by 3.3 percent in rough-legged hawks, and not at all in gyrfalcons. Tundra peregrine eggs contain an average of 889 parts of DDE per million (lipid basis); taiga peregrine eggs contain 673 parts per million; Aleutian peregrine eggs contain 167 parts per million; rough-legged hawk eggs contain 22.5 parts per million; and gyrfalcon eggs contain 3.88 parts per million. These changes in eggshell thickness and the pesticide residues reflect different degrees of exposure to contamination. There is a highly significant negative correlation between shell thickness and DDE content in peregrine eggs. Tundra and taiga peregrines have fledged progressively fewer young each year since 1966.
在阿拉斯加苔原游隼中，接触滴滴涕后蛋壳厚度减少了21.7%，在泰加林游隼中减少了16.8%，在阿留申游隼中减少了7.5%，在矛隼中减少了3.3%，而矛隼蛋壳厚度则完全没有变化。苔原游隼蛋每百万（脂质基础）平均含有889份滴滴伊；泰加林游隼蛋每百万含有673份；阿留申游隼蛋每百万含有167份；矛隼蛋每百万含有22.5份；矛隼蛋每百万含有3.88份。蛋壳厚度的这些变化以及农药残留反映了不同程度的污染暴露。游隼蛋的蛋壳厚度与滴滴伊含量之间存在高度显著的负相关。自1966年以来，苔原和泰加林游隼每年育出的幼鸟数量逐渐减少。
