ɪn ɐdˈɪʃən, stˈʌdiz hæv ʃˈoʊn ɐ lɔndʒˈɛvᵻɾi dˈɪfɹəns bᵻtwˌiːn vˈɜːdʒɪn ænd mˈeɪɾᵻd fˈiːmeɪlz, sədʒˈɛstɪŋ ɐ kˈɔst tə mˈeɪɾɪŋ.
In addition, studies have shown a longevity difference between virgin and mated females, suggesting a cost to mating.