Table 3.

Mating assays with only conspecific males and different population sizes

	Copulation latency			Copulation duration
Species	Coefficient	t value	P-value	Coefficient	t value	P-value
Drosophila yakuba	−8.009 × 10−4	−0.537	0.592	3.25 × 10−4	0.144	0.885
Drosophila santomea	4.746 × 10−4	0.381	0.704	−4.875 × 10−4	−0.318	0.751
Drosophila simulans	2.142 × 10−3	1.30	0.196	−1.289 × 10−3	−0.734	0.464
Drosophila sechellia	9.093 × 10−4	0.758	0.449	−1.776 × 10−3	−1.201	0.232

No heterogeneity was detected in any of the four species at the two mating behaviors. I found no significant values (P < 0.05, df = 1496).