Positional behavior and social organization of the philippine tarsier (Tarsius syrichta) |
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Authors: | Marian Dagosto Daniel L Gebo Cynthia Dolino |
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Institution: | (1) Department of Cell and Molecular Biology, Northwestern University Medical School, 303E, Chicago Avenue, 60601-3008 Chicago, Illinois, U. S. A.;(2) Department of Anthropology, Northern Illinois University, 60115 DeKalb, Illinois, U. S. A.;(3) Department of Biology, Silliman University, Dumaguete, Philippines |
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Abstract: | This study provides preliminary data on the positional behavior and habitat use of the Philippine tarsier,Tarsius syrichta, which was studied in its natural habitat on the island of Leyte. The locomotor behavior ofT. syrichta is quite comparable to the other species of tarsiers but frequency of use of different postures and support types does seem
to distinguish this species from the others.Tarsius bancanus appears to be the most specialized, using vertical clinging postures the most frequently and sitting the least;Tarsius dianae uses vertical clinging the least frequently and sitting the most, andT. syrichta is intermediate. The Philippine tarsier has a small home range similar to that ofT. spectrum. On the other hand, this species likely does not have the small family groups typical of Sulawesi tarsiers but instead uses
a noyau system likeT. bancanus. This data supports some apsects ofNiemitz’s (1977) model of anatomical and behavioral specialization among tarsier species. |
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Keywords: | Tarsius Positional behavior Locomotion Social organization |
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