ข้อมูลงานวิจัย

สัตว์

Northern pigtailed macaques rely on old growth plantations to offset low fruit availability in a degraded forest fragment

American journal of primatology

Sakaerat Bioshere Reserve

2020/2563

2017-2020

บทความ

ฉบับสมบูรณ์

สัตว์ป่า

Foraging strategies, Fruit availability, Habitat degradation, Hidden Markov models, Ranging patterns

Space-use and foraging strategies are important facets to consider in regard to the ecology and conservation of primates. For this study, we documented movement, ranging, and foraging patterns of northern pigtailed macaques (Macaca leonina) for 14 months in a degraded habitat with old growth Acacia and Eucalyptus plantations at the Sakaerat Biosphere Reserve in northeastern Thailand. We used hidden Markov models and characteristic hull polygons to analyze these patterns in regard to fruit availability. Macaques home range (HR) was 599 ha and spanned through a natural dry-evergreen forest (DEF), and plantation forest. Our results showed that active foraging increased with higher fruit availability in DEF. Macaques changed to a less continuous behavioral state during periods of lower fruit availability in DEF, repeatedly moving from foraging to transiting behavior, while extending their HR further into plantation forest and surrounding edge areas. Concomitantly, macaques shifted their diet from fleshy to dry fruit such as the introduced Acacia species. Our results showed that the diet and movement ecology adaptations of northern pigtailed macaques were largely dependent on availability of native fruits, and reflected a high-cost, high-yield foraging strategy when fresh food was scarce and dry fruit was available in plantation forest. Conversely, wild-feeding northern pigtailed macaque populations inhabiting pristine habitat approached a low-cost, low-yield foraging strategy. Our results outline the effects of habitat degradation on foraging strategies and show how a flexible species can cope with its nutritional requirements.

Gazagne, E., Jose

Alain Hambuckers(อแลง แฮมบัคเกอร์) Eva Gazagne(อีวา กาซาญ) Fany Brotcorne(ฟานี่ บรอทคอร์น) Juan Manuel Jos(โฆเซ่ เอ็ม. โดมินเกซ) Marie-Claude Huynen(มารี-คล็อด ไฮเนน) Pascal Poncin(ปาสคาล ปอนซิน) Tommaso Savini(โทมัสโซ ซาวินี่)