Heritable determinants of male fertilization success in the nematode Caenorhabditis elegans

Table 2 Summary of male reproductive traits.

strain	courtship ability ^a*	mating ability ^b*	number of transferred sperm ^c	spermatid size ^d*	sperm production rate ^e*	P2 early*	P2 late	P2 fertility ^f	male maintenance ^g
AB1	23.38	12.14	161	8.17	0.780	0.734	0.490	190.2	0.352
CB4855	29.17	8.57	188	5.62	0.708	0.814	0.516	266.2	0.122
CB4856	27.14	8.57	178	6.08	0.758	0.809	0.495	260.3	0.239
DR1350	9.52	5.00	206	5.15	1.017	0.497	0.519	196.3	n.d.
JU440	20.83	23.57	111	5.46	0.935	0.572	0.500	216.7	0.050
MY2	22.53	20.00	138	4.22	0.862	0.516	0.460	159.5	0.135
PD4790	24.03	18.57	123	4.74	0.970	0.488 ^h	0.496 ^h	170.1	0.181 ⁱ

^a mean percent of observations with male-female contact and/or spicule insertion; ^b mean percent females inseminated in 9 h; ^c median number of sperm; ^d median diameter (μm); ^e mean number of sperm/min; ^f mean total number of progeny; ^g from Teotonio et al. [29]; ^h averaged across all 6 experiments with wild isolate strains; ⁱ value for strain N2 that shares the same genetic background as PD4790; * significant among-strain heritable variation in this trait; n.d. = not determined

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