Hunting, pet trade, and forest size effects on population viability of a critically endangered Neotropical primate,Sapajus xanthosternos(Wied-Neuwied, 1826)
| Autor: | Christine Steiner São Bernardo, Gustavo R. Canale, Maria Cecília Martins Kierulff, Adriano Pereira Paglia, Gabriela Teixeira Duarte, Fabiana Araújo da Silva |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
education.field_of_study Ecology 05 social sciences Population Species distribution Endangered species 010603 evolutionary biology 01 natural sciences Critically endangered Geography Habitat destruction Minimum viable population Threatened species 0501 psychology and cognitive sciences Animal Science and Zoology 050102 behavioral science & comparative psychology education Ecology Evolution Behavior and Systematics Extinction vortex |
| Zdroj: | American Journal of Primatology. 78:950-960 |
| ISSN: | 0275-2565 |
| Popis: | The yellow-breasted capuchin monkey (Sapajus xanthosternos) is one of the seven Brazilian primates that are currently threatened with extinction. Although the species is known to be threatened by habitat loss, hunting, and illegal pet trade, few data exist on how these threats influence its long-term population persistence. We conducted population viability analyses (PVAs) to estimate minimum viable populations of S. xanthosternos under 10 threat scenarios (i.e., varying hunting pressure and varying number of infants captured for the pet trade) for five forest fragments with different estimated carrying capacities (K). We also estimated the minimum forest fragment size required to sustain viable populations living under the same 10 threat scenarios, based on critical numbers of K obtained in sensitivity tests, below which the population would be unviable. Our PVAs suggests that hunting has a higher impact on population viability in comparison to threats from the pet trade. Annual losses of adult and young females from hunting had the most detrimental effect on population persistence under all forest fragment sizes. Such hunting pressure is not sustainable for populations living in areas ≤3,460 ha, since these areas may not support populations of ≥84 individuals. The seven largest of the 13 protected areas currently harboring capuchins should be effective at maintaining viable populations in the long term even under the greatest threat scenarios we modeled. Other large forest patches, mainly in the western part of the species distribution, are recommended as priority areas for protection to increase the chances of capuchins' survival for the long term. In addition, forest fragments of ≤782.8 ha cannot maintain viable populations, even when there are no threats from hunting or from captures for the pet trade. Increased law enforcement is necessary to prevent the hunting and capture of capuchins, especially within larger forest fragments. Am. J. Primatol. 78:950-960, 2016. © 2016 Wiley Periodicals, Inc. |
| Databáze: | OpenAIRE |
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