Abstract
Females of the field cricket G. bimaculatus show multiple mating. Since such a strategy is likely to incur costs such as time and energy spent in orientation to calling males or increased susceptibility to predation, it must have certain selective advantages. This study shows that multiple mating is a potential mechanism of mate choice. Females removed the spermatophores of some males before complete insemination was achieved. Females also remained with large males in order to mate a second or third time. Since spermathecal morphology may limit last-male sperm precedence in this species, a function of multiple mating may be to dilute the sperm stored from previous matings with that of the current male, so increasing his representation in offspring production.
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