Publication details.


Author(s):S. Pinya, G. Tavecchia, V. Pérez-Mellado
Title:Population model of an endangered amphibian: implications for conservation management
Journal:Endangered Species Research
JCR Impact Factor:2.312
Issue No.:1
Abstract:Amphibian populations are declining worldwide but for many taxa, robust estimates of demographic parameters to assess population state or trend are scarce or absent. We provide robust estimates of adult apparent survival of the endemic Mallorcan midwife toad Alytes muletensis using individual capture-recapture data collected over 4 yr in a 60m2 cistern. Moreover, we combined the vital rates into a stage-structured population model to estimate the expected long-term 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 by males, typical of this species, does not reduce its survival probability. We found evidence for a low local survival of juveniles compared to 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 previously adult population size. Model projections suggested a stable population, since λ was close to 1.00.

Related staff

  • Giacomo Tavecchia
  • Related projects

  • IBISES CTA 134
  • Related research groups

  • Ecology and Evolution