The Philippines is considered a megadiverse country. However, there are few published studies on its nonhuman primate (NHP) species ( Carlito syrichta , Macaca fascicularis , and Nycticebus menagensis ). Understanding the nature and extent of existing NHP research in the Philippines would help us to determine research gaps and opportunities. Thus, studies on NHPs of Philippine origin were retrieved from online databases including Google Scholar, ResearchGate, Primate Lit, the Integrated Taxonomic Information System (ITIS), and relevant authors. Of a total of 107 studies on Philippine NHP from 1989 to 2019, most focused on Philippine long-tailed macaque (52.78%), and Philippine tarsier (42.59%), with far fewer on Philippine slow loris (4.63%). Fewer studies were based on fieldwork (26.17%); more were based on research on captive animals or that undertaken in the laboratory (34.58%), or used only existing specimens or data (33.64%). Studies on wild NHPs were mostly conducted in Bohol Island. In terms of the type of research, studies on diseases (38.60%) were the most prevalent for macaques; ecological studies (23.91%) for tarsiers; evolutionary, taxonomic, and systematic studies (40%), and ecological and natural history studies (40%) for lorises. Philippine researchers and collaborations with foreign researchers contributed fewer studies (43.93%) than foreign-only researchers (56.07%). In conclusion, although research on Philippine NHPs is increasing, there is a bias with regards to the species studied, the type of research, and study location. Conservation-driven studies are also lacking. These gaps offer opportunities for further research to identify threats to the survival of NHPs in the Philippines, and for the development of plans and effective strategies for their conservation.

中文翻译：

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菲律宾非人类灵长类动物研究的三个十年：菲律宾灵长类动物学的研究差距和机遇

菲律宾被认为是一个多元化的国家。然而，关于其非人类灵长类 (NHP) 物种（Carlito syrichta、Macaca fascicularis 和 Nycticebus menagensis）的已发表研究很少。了解菲律宾现有 NHP 研究的性质和范围将有助于我们确定研究差距和机会。因此，从包括 Google Scholar、ResearchGate、Primate Lit、综合分类信息系统 (ITIS) 和相关作者在内的在线数据库检索了有关菲律宾 NHP 的研究。在 1989 年至 2019 年对菲律宾 NHP 的 107 项研究中，大多数集中在菲律宾长尾猕猴 (52.78%) 和菲律宾眼镜猴 (42.59%) 上，对菲律宾懒猴 (4.63%) 的研究要少得多。基于实地调查的研究较少（26.17%）；更多基于对圈养动物的研究或在实验室进行的研究 (34.58%)，或仅使用现有标本或数据 (33.64%)。对野生 NHP 的研究主要在薄荷岛进行。就研究类型而言，对猕猴的疾病研究（38.60%）最为普遍；眼镜猴的生态研究（23.91%）；懒猴的进化、分类和系统研究 (40%) 以及生态和自然历史研究 (40%)。菲律宾研究人员和与外国研究人员的合作贡献的研究 (43.93%) 少于外国研究人员 (56.07%)。总之，尽管对菲律宾 NHP 的研究正在增加，但在研究的物种、研究类型和研究地点方面存在偏见。保护驱动的研究也缺乏。