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Table 4 Copulation duration

From: Experimental evolution under hyper-promiscuity in Drosophila melanogaster

Test

Male typea

Female typea

Generation

F

df

P

(a) Effects of SPR- deficiency in malesb

SPR- or C

WT

N/A

0.2

1,95

0.64

Experimental evolution of males

SPR- or C

WT

16

14.6

1,6.2

0.0083

Experimental evolution of males

SPR- or C

WT

36

6.6

1,6.8

0.038

(b) Effects of SPR- deficiency in females, first mating

WT

SPR- or C

N/A

13.5

1,78

0.0004

Experimental evolution of females

WT

SPR- or C

26

0.9

1,6.0

0.37

(c) Effects of SPR- deficiency in within-treatment pairs

SPR- or C

SPR- or C

N/A

3.7

1,49

0.059

Experimental evolution in within-treatment pairs

SPR- or C

SPR- or C

26

67.8

1,6.5

0.0001

  1. aMales and females were SPR- or genetically matched controls (C), or wild-type (WT)
  2. bCopulation duration did not vary between blocks (F1,95 = 0.0, P = 0.91)
  3. Effects of the SPR- deficiency itself in unselected flies, or experimental evolution in SPR- and control populations, on copulation duration in virgin flies for (a) experimental males paired with wild-type females, (b) experimental females paired with wild-type males, or (c) experimental males and females paired within treatment and replicate population