Table 3a. Estimates of the DFE.

No. of chromo.	Shape	Lower CI	Upper CI	S	Lower CI	Upper CI
5	0.45	0.21	0.56	1120	289	34 400
11	0.44	0.34	0.57	1890	574	12 200

Abbreviations: CI, confidence interval; DFE, distribution of fitness effect.

The first column gives the number of chromosomes (chromo.) sampled for each species in the data set. The shape parameter of the gamma distribution of fitness effects is given in the ‘shape' column, and the estimated strength of selection is given in the S column. CIs for each variable are labelled as ‘Lower CI' and ‘Upper CI'.