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Sting in the tail

发布时间:2019-03-08 07:18:03来源:未知点击:

THE loose morals of a tiny arachnid have revealed a new trick for reproductive success. In some animals, females produce fit young by selecting only the best suitors. Another strategy is to mate with many males and let their sperm compete to fertilise eggs. Now scientists at the University of Houston say that female false scorpions (Cordylochernes scorpioides) mate with many males, but reject ones they’ve mated with before. This maximises sperm competition (Proceedings of the National Academy of Sciences, vol 95,