Reproductive success of the male is not only depends on his success in mating, but the number of females he could inseminate in a given time. The age effect on male remating and progeny production has been studied in Drosophila malerkotliana. It was found that middle aged males had a greater percentage of remating than those of young or old males. Male mated two females in an hour had copulated longer, laid a greater number of eggs and produced the greatest number of progeny than those males

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... ch mated with one female in an hour. This result found to be similar in all the male age classes studied. It was also noted that young male copulated longest in the experiment involving male mated only one female in 1 hour. Female that mated with middle aged male laid least fecundity in the experiment involving male mated only one female in 1 hour. Whereas female that mated with middle aged male had produced greater progeny in the experiment in which male mated with one/two females in 1 hour. Among the male mated with 1 st and 2 nd female in an hour male invested more in 1 st mated female compared to 2 nd mated female.