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Fellatio by Fruit Bats Prolongs Copulation Time

Figure 2

Relationship between the duration of copulation and total length of time that the female licked the male's penis in each copulation (N = 14).

The relationship is described by the equation: duration of copulation (s) = 101.24+6.22 (duration of licking behaviour, (s)) (F 1,13 = 26.14, P<0.001). Therefore each second of licking prolongs copulation by approximately 6 s.

Figure 2

doi: https://doi.org/10.1371/journal.pone.0007595.g002