Johnston D W
Science. 1974 Nov 29;186(4166):841-2. doi: 10.1126/science.186.4166.841.
Analyses of ten species of migratory songbirds killed when the birds flew into television towers in Florida showed a progressive decline in the concentration of DDT and its metabolites (DDD and DDE) in their fat depots for the period 1964 to 1973. This decline is apparently correlated with the decreased usage of DDT in the United States during the same time.
对在佛罗里达州因飞撞到电视塔而死亡的10种候鸟的分析表明,在1964年至1973年期间,它们脂肪库中滴滴涕及其代谢物(滴滴滴和滴滴伊)的浓度呈逐渐下降趋势。这种下降显然与同一时期美国滴滴涕使用量的减少有关。