Table 1. Descriptive statistics of reproductive parameters of F1 individuals who survived to age 15 and were successfully followed until the end of potential reproductive life, split by sex and parental socio-economic status (mean±s.d.).

SES	Sex	N	Lifespan	% Rep	AFR	ALR	L. Fec.	LRS
Own land	M	531	53.1±17.6	87.1%	28.0±5.7	40.5±8.4	5.2±3.4	3.2±2.3
	F	519	58.2±18.8	86.0%	26.3±5.0	38.2±5.6	4.8±3.2	3.0±2.3
Landless	M	447	52.9±18.7	88.4%	28.3±5.8	41.8±9.0	5.2±3.3	3.2±2.4
	F	459	56.6±19.0	88.1%	26.5±4.6	38.0±6.2	4.5±2.9	2.7±2.1
All	M	978	53.0±18.1	87.7%	28.2±5.8	41.1±8.7	5.2±3.3	3.2±2.3
	F	978	57.5±18.9	87.0%	26.4±4.8	38.1±5.9	4.7±3.1	2.9±2.2

(SES: parental socio-economic status; N: sample size; % Rep: probability of reproducing; AFR: age at first reproduction; ALR: age at last reproduction; L. Fec.: lifetime fecundity; LRS: lifetime reproductive success).