Effects of population outcrossing on rotifer fitness

Table 1 Sex-dependent asymmetries in the fertilisation proportions.

Interpopulation cross	Generation	Resident paternal × immigrant^amaternal	Resident maternal × immigrant^apaternal	P-value
TOS-HOS	F1	74.7%	69.7%	0.057
	BC	91.6%	84.8%	<0.001
TOS-TUR	F1	73.3%	82.5%	<0.001
	BC	88.1%	84.0%	0.009
TOS-CHI	F1	92.6%	87.7%	0.002
	BC	85.6%	85.5%	0.951

a. For F1, clones used as immigrants were collected from the field; for BC, immigrant refers to F1 clones produced in 'immigrant × resident' crosses.
Parental fertilisation percentages and P-values for Chi-square tests applied to the three interpopulation crosses for F1 and BC generations.

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