American Journal of Primatology, Journal Year: 2024, Volume and Issue: 87(1)
Published: Dec. 26, 2024
Many animals face significant challenges in locating and acquiring resources that are unevenly distributed space time. In the case of nonhuman primates, it remains unclear how individuals remember goal locations whether they navigate using a route-based or coordinate-based mental representation when moving between out-of-sight feeding resting sites (i.e., large-scale space). Here, we examine spatial memory map formation wild Tibetan macaques (Macaca thibetana) inhabiting mountainous, forested ecosystem characterized by steep terrain limits direct vision to 25 meters. We used an instantaneous scan sampling technique at 10-min intervals record behavior location on Mt. Huangshan, Anhui Province, China, from September 2020 August 2023. Over 214 days, obtained 7180 GPS points macaques' locations. Our study revealed reused 1264 route segments (average length 204.26 m) least four times each. The number around habitual segment, roughness, dense vegetation areas significantly influenced use our group. addition, found evidence monkeys 48 nodes reorient their travel path. approached revisited foraging site same limited set directions, which is inconsistent with representation. direction left was different straight-line required reach next site, suggesting frequently reoriented goal. Finally, average, traveled 24% (CI = 1.24) farther than distance sites. From robust data set, conclude large spaces appears help them locate food dense, rugged montane forests heterogeneous habitats.
Language: Английский