Table 2.

Results for sex‐specific generalized linear mixed models (GLMMs) of annual reproductive success (ARS) for Brown Treesnake (Boiga irregularis) from a geographically closed population on Guam. GLMMs were run for (A) complete sex‐specific data sets (male = 661 records; female = 735 records) and (B) sex‐specific data sets filtered by SVL to include only likely adult records (male = 312 records; female = 367 records). Sex‐specific ARS was modeled as a linear function of four annual fixed effects (“Parameter”): average body condition index (“BCI”), standardized average snout–vent length (“SVL”), the number of times the individual was captured in a baited trap (“Trappability”), and the individual's genome‐wide estimate of inbreeding (“Inbreeding”). GLMMs also included individual and year of sampling as random effects (not shown). GLMMs employed a Poisson error distribution with a log‐link

Fixed effect	Male ARS				Female ARS
	Estimate	SE	LRT	p	Estimate	SE	LRT	p
(A) Complete
BCI	4.194	0.938	19.240	<0.001	1.723	0.736	5.616	0.018
SVL	1.755	0.290	68.804	<0.001	1.683	0.262	78.852	<0.001
Trappability	0.113	0.034	11.730	<0.001	0.049	0.020	5.623	0.018
Inbreeding	0.404	1.388	0.085	0.771	−0.582	1.219	0.223	0.636
(B) SVL‐filtered
BCI	4.365	1.004	18.393	<0.001	1.369	0.734	3.548	0.060
SVL	1.601	0.415	14.971	<0.001	1.013	0.365	7.556	0.006
Trappability	0.113	0.036	10.810	0.001	0.044	0.020	4.664	0.031
Inbreeding	0.621	1.439	0.187	0.666	−0.505	1.138	0.194	0.660

Significance of fixed effects was assessed with likelihood ratio tests of the global model containing the effect of interest against a null model without the effect, with significant p‐values in bold (χ ², α = 0.05). Estimates and standard errors are reported for effects in the global model to avoid overestimation of effect sizes.

Abbreviations: Estimate, statistical value; LRT, log‐likelihood ratio; p, p‐value; SE, standard error.