Pinya, S., Tavecchia,G. and Valentín Pérez-Mellado, V. Population model of an endangered amphibian: implications for conservation management Endangered Species Research, 34: 123–130, doi.org/10.3354/esr00835
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of demographic parameters to assess population state or trends are scarce or absent.
robust estimates of adult apparent survival of the endemic Majorcan midwife toad Alytes muletensis using individual capture-recapture data collected over 4 yr in a 60 m2 cistern. Moreover, we combined the vital rates into a stage-structured population model to estimate the ex pected longterm growth rate of the population. Apparent survival estimates of males and females were similar (0.737 ± 0.042 and 0.726 ± 0.045, respectively) indicating that the egg-carrying behavior of males, typical of this species, does not reduce its survival probability. We found evidence of a low local survival of juveniles compared with adults, most likely due to permanent dispersal. Adult population size estimation provided higher tadpole:adult ratios than previously reported for this endangered species, suggesting an overestimation of the previous adult population size. Model projections suggested a stable population, since λ, the expected asymptotic growth rate of the population, was close to 1.00.
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