Coefficients for best fitting models predicting egg number per clutch.

Coefficients for model with lowest AIC value for each Pomacea species (Table 2). Each model is a Generalized Linear Model with a Poisson distribution, such that: where y is egg number per clutch, a and b represent the intercept and slope coefficients, respectively, and x is the explanatory variable. Coefficients include ± one standard error and the corresponding Z-Value in parentheses. The Z-value for each coefficient proved significant (p