Life-table analysis of Dendrobates auratus (Anura: Dendrobatidae) in two isolated populations from Costa Rica
DOI:
https://doi.org/10.18636/bioneotropical.v1i2.34Keywords:
Life table, Populations, Mortality, Life expectancy, Survival.Abstract
Life-tables are important tools for population knowledge and conservation. This study analyzes life- tables for two isolated populations of Dendrobates auratus from Costa Rica. A direct visual survey with direct capture was completed at La Suerte Biological Station in a secondary Humid Tropical Forest on the Caribbean coast and Playa Hermosa Wildlife Refuge, a primary Very Humid Tropical Forest on the Pacific coast. A size-based classification was made based upon natural history information for the species. Static life-tables were built and statistical comparisons were made to analyze trends in life expectancy and mortality. The results showed some differences in survival, life-expectancy, and mortality rates; however, the overall population characteristics were fairly similar. Threats on their habitat and populations and isolation do not seem to have significant impacts on the life history of these populations.
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