Model selection from six candidate survival functions.

The comparison of six survival functions with or without mean number of mites as an individual covariate for survival estimates of Takydromus viridipunctatus.
φ: survival; α: intercept; β: slope; m: males; f: females; ***: <0.0001. Survival functions were estimated in Cormack-Jolly-Seber models with time- and sex-varying recapture probabilities. The models with mean number of mites as an individual covariate (models 3–5) generally had lower AICc values and produced significantly better model fits than the reduced models (models 1&2), as evaluated by LR tests (model 1 versus 3, model 1 versus 5, model 2 versus 4, and model 2 versus 6).