Table 1.

Variables associated with reproductive success of male roach (Rutilus rutilus) obtained by LME models in the two breeding studies.

Study	No. of males	No. of tanks	Variable	Coefficient	LRT p-value	Permutation p-value
1	38	7	Length	0.0036	0.036	0.021
2	75	13	Intersex	−0.029	< 0.0001	0.001
			Ovarian cavities	0.045	0.05	0.0001
			Length	0.00062	0.076	NA
			Genetic diversity (HL)	0.14	0.019	0.0001
Combined data set	113	20	Intersex	−0.029	0.0001	0.015
			Length	0.00080	0.035	0.027
			Roughness	0.031	0.022	0.048

Values are those retained after stepwise elimination of variables with p-values > 0.1 calculated using LRTs; hence, not all of the variables analyzed are shown. Full models are shown in Supplemental Material (doi:10.1289/ehp.1002555); Supplemental Material, Table 1 shows results of full models excluding sperm parameters, and Supplemental Material, Tables 2 and 3 show results of models including sperm density and viability but excluding some individual fish for which sperm data were not available. NA, not applicable; permutation tests were carried out only on variables giving LRT p-values < 0.05.