Comparative locomotion of six sympatric primates in Ecuador |
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| Institution: | 1. Department of Anatomy and Neurobiology, Northeast Ohio Medical University (NEOMED), Rootstown, OH 44272, USA;2. Musculoskeletal Biology Research Focus Area, NEOMED, Rootstown, OH 44272, USA;3. School of Biomedical Sciences, Kent State University, Kent, OH 44240, USA;4. Department of Anatomy, Idaho College of Osteopathic Medicine, Meridian, ID 83642, USA;1. Smithsonian Tropical Research Institute, Ancon, Panama;2. Animal Behavior Graduate Group, University of California – Davis, Davis, CA, USA;3. Estaci?n Científica COIBA-AIP, Ciudad del Saber, Clayton, Panamá, Panama;4. Department of Anthropology, University of California – Davis, Davis, CA, USA;5. Department of Environmental Sciences, Wageningen University & Research, Wageningen, The Netherlands;1. Laboratory of Physical Anthropology, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan;2. Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, C/ Columnes S/n, Campus de La UAB, 08193, Cerdanyola Del Vallès, Barcelona, Spain;3. Division of Human Anatomy and Biological Anthropology, Department of Anatomy and Physiology, Faculty of Medicine, Saga University, Saga, 849-8501, Japan;4. Department of Biological Anthropology, Osaka University, Suita, Osaka, 565-8502, Japan;5. Department of Business Administration, Faculty of Business Administration, Ryukoku University, Kyoto, 612-8577, Japan;6. Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan;7. Faculty of Nursing and Rehabilitation, Chubu Gakuin University, Seki, Gifu, 504-0837, Japan;8. Japan Monkey Centre, Aichi, 484-0081, Japan;9. Department of Rehabilitation, Faculty of Medical Science and Welfare, Tohoku Bunka Gakuen University, Sendai, 981-8551, Japan;10. Kyoto University, Kyoto, 606-8502, Japan;1. Department of Zoology, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan;2. Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, c/ Columnes s/n, Campus de la UAB, 08193, Cerdanyola del Vallès, Barcelona, Spain;3. Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010, Barcelona, Spain;4. Unitat d’Antropologia Biològica, Departament de Biologia Animal, Biologia Vegetal i Ecologia, Universitat Autònoma de Barcelona, 08193, Cerdanyola del Vallès, Barcelona, Spain;5. Division of Anthropology, American Museum of Natural History, Central Park West at 79th Street, New York, NY, 10024, USA;6. New York Consortium in Evolutionary Primatology, New York, USA |
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| Abstract: | Primates exhibit a great variety of arboreal locomotor modes associated with their size and postcranial morphology. The study of sympatric primates is interesting in that it may reveal how primates of different sizes and anatomies move and select for forest structure. This study reports on preliminary data on the locomotion of six non-ateline platyrrhines found in the Yasuni National Park, Napo Province, Ecuador. Pygmy marmosets are confined to the understory using scansorial locomotion and quadrupedalism, preferring large vertical supports. Golden-mantled tamarins, common squirrel monkeys and dusky titis also range in the understory, moving by quadrupedal walk and leap, mainly on small horizontal supports. Monk sakis are found in the main canopy and use quadrupedal walk and less leap on medium-sized horizontal supports. Whitefronted capuchins use the understory and the main canopy equally often, walking quadrupedally and leaping on small and medium-sized oblique supports. In general, smaller species occupy lower strata while larger species tend to spend more time in the upper strata. Small tegulae-bearing monkeys showed the highest proportions of large vertical support use. For all species, leaping was the main gap-crossing mode, though decreasing in proportion with a higher use of the upper forest layers. |
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