AbstractRecent assertions that the Barbary macaque (Macaca sylvanus) is a multiple‐or serial‐mounting species are incorrect. Data are presented from over 300 copulations observed among wild Moroccan Barbary macaques which establish empirically that males of this macaque species are single mounters. The average length of an ejaculatory copulation was 8.7 sec, with a range of 6 to 14 sec. Ejaculation occurred an average of 6.3 sec after mounting, with an average of nine pelvic thrusts per ejaculation. Males appeared capable of ejaculating twice within 16 min, and three consecutive times within 37 min. Characteristically, only one mount and ejaculation occurred during a sexual association between an estrous female and each of her consorting males. Schemes of macaque evolution which incorrectly classify Barbary macaques as a multiple‐mounting species should be viewed cauti
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