在第二年的春天，在绿色叶子的果林中，60%的蚜虫存活了下来，而相对的，在红色叶子的过林中，存活率仅有29%。现今，他在皇家学会B的学报中发布了这个结果。
The following spring, 60% of aphids nesting in green trees had survived, compared with only 29% of those in the red trees, he reports today in the Proceedings of the Royal Society B.
仅体色蚜虫就有多种分化，如棉蚜有黄色型、绿色型和中间型之别。
Aphids have many polarizations only in body color, such as the yellow, the green and the intermediate color etc in cotton Aphids.
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