Paper| Year: | 2017 |
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| Author(s): | S. Pinya, G. Tavecchia, V. Pérez-Mellado |
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| Title: | Population model of an endangered amphibian: implications for conservation management |
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| Journal: | Endangered Species Research |
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| ISSN: | 1863-5407 |
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| JCR Impact Factor: | 2.312 |
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| Volume: | 34 |
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| Issue No.: | 1 |
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| Pages: | 123-130 |
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| D.O.I.: | 10.3354/esr00835 |
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| Web: | http://www.int-res.com/prepress/n00835.html |
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| 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.
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Related staffGiacomo TavecchiaRelated projectsIBISES CTA 134Related research groupsEcology and Evolution
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