Life history of wild Sumatran orangutans (Pongo abelii)
| Autor: | H. D. Rijksen, Serge A. Wich, T Mitra Setia, C. Schürmann, C P van Schaik, J.A.R.A.M. van Hooff, S. S. Utami-Atmoko |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Male
Pan troglodytes media_common.quotation_subject Longevity Population Zoology Biology Pongo pygmaeus Pregnancy Animals Humans Life Tables Sex Ratio education Ecology Evolution Behavior and Systematics media_common Sumatran orangutan education.field_of_study Reproduction Pongo abelii biology.organism_classification Biological Evolution Human evolution Indonesia Anthropology Female Sex ratio Demography |
| Zdroj: | Journal of Human Evolution. 47:385-398 |
| ISSN: | 0047-2484 |
| DOI: | 10.1016/j.jhevol.2004.08.006 |
| Popis: | We present life history data on wild Sumatran orangutans gleaned from a 32-year and a 5.5-year study. Estimated age at first reproduction was 15.4 years. At 9.3 years, the average interbirth interval for this population is the longest ever recorded for any great ape population, significantly longer than that of a Bornean orangutan population. We find that age-specific mortality of Sumatran orangutans does not differ between sexes and is significantly lower than that of wild chimpanzees. We conclude that orangutan life history is the slowest among extant great apes. In accordance with their slow life history, longevity in the wild is estimated to be at least 58 years for males and at least 53 for females. We find no evidence for menopause. These data suggest that compared to the ancestral state, humans have undergone less of an increase in longevity than commonly assumed, and have experienced selection on earlier cessation of reproduction. |
| Databáze: | OpenAIRE |
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