Video of the Spectral tarsier (Tarsius tarsier) on ARKive: Spectral tarsier feeding (video video-08)
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Females (77%) were more likely to form a territory adjacent to the parental territory than were males (20%). Individuals exhibited relatively high amounts of site fidelity (86%) that were related to physical characteristics of the sleeping site. Adults that dispersed a second time (n = 4) initially resided in trees that were shorter and had a smaller diameter-at-breast height than the trees of individuals that exhibited site fidelity.
This is the kind of research that the Philippine tarsiers (T. syrichta) sorely need for its conservation. The more we know of the social behavior of the species, the better chances we have for making informed conservation decisions. As of the moment, we have some researchers affiliated with the Philippine Tarsier Foundation, Inc. and the University of San Carlos but the research output has been sporadic. If indeed researches were done, almost all of these were in the island of Bohol (with some from Leyte courtesy of Marian Dagosto).
We are hoping that the Tarsius Project will contribute more to the sparse knowledge conservation agents have on T. syrichta. This year’s fieldwork revealed a lot of information, especially on the bioacoustics of the species. So, we’re hoping for more researches in the years to come.