Table 1.

Multivariate analyses of the difference between hatchlings and survivors

Pond	BW1		CVP		Pond F		Pond G		JCL2
	Coefficient	P	Coefficient	P	Coefficient	P	Coefficient	P	Coefficient	P
Intercept	1.151		−0.598		2.777		1.188		3.376
θS	1.911	0.002	13.744	0.000	4.246	0.000	−4.641	0.002	2.816	0.267
θH	3.508	0.000	2.076	0.000	5.190	0.000	3.079	0.000	5.924	0.000
θS2	−1.756	0.088	−12.368	0.002	−6.276	0.002	−7.788	0.002	−6.335	0.042

A positive coefficient for θ_S indicates selection favoring nonnative alleles, a positive coefficient for θ_H indicates selection favoring heterozygous hybrid genotypes, and negative coefficients for θ_S² indicate selection favoring mixed genotypes regardless of heterozygosity. These heuristic interpretations of the coefficients are correct when all else is equal; refer to Fig. 1 to see actual changes in genotype distributions.