Fig 3. Linear relation between mating duration (min) and number of sperm in female spermathecae in: A) uninterrupted matings: Fly gift-uninterrupted mating, males offering a fly gift and Worthless gift-uninterrupted mating, males offering a worthless gift; B) interrupted matings: Fly gift-interrupted mating, males offering a fly gift and performing one pedipalp insertion, No-fly gift-interrupted mating, males offering no gift and performing one pedipalp insertion.

P values are given in Table 1.