Determinants of terrestrial feeding in an arboreal primate
The case of the southern bamboo lemur ( Hapalemur meridionalis )
Bibliographic Data
| ID | 8320517 |
|---|---|
| Authors | Timothy M Eppley (0000-0003-1456-6948, Department of Anthropology University of Texas at Austin 2201 Speedway Stop C3200 Austin Texas 78712, corresponding author), Giuseppe Donati (0000-0002-4803-0642, Nocturnal Primate Research Group, Department of Social Sciences Oxford Brookes University Gipsy Lane Oxford OX3 0BP United Kingdom), Jörg U Ganzhorn (0000-0003-1395-9758, Department of Animal Ecology and Conservation, Biozentrum Grindel University of Hamburg Martin‐Luther‐King Platz 3 Hamburg 20146 Germany) |
| Year | 2016 |
| Volume | 161 |
| Issue | 2 |
| Pages | 328-342 |
| Publication date | 2016-10-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | American Journal of Physical Anthropology (JOURNAL) |
| Journal identifiers | ISSN: 0002-9483 • E-ISSN: 1096-8644 |
| Publisher | Wiley (PUBLISHER • GB) |
| DOI | 10.1002/ajpa.23034 |
| PMID | 27348233 |
| OpenAlex | W2475018781 |
| Language | EN |
| Citations received | 13 |
| References cited | 126 |
OBJECTIVES: The proximate and ultimate determinants that may have prompted some primates to shift from an arboreal to terrestrial feeding niche, whether due to environmental change, seasonality, and/or predation pressure, are poorly understood. Within a fragmented littoral forest in southeast Madagascar, an arboreal strepsirrhine population spends a large proportion of time on the ground, thus we aimed to identify which factors influence terrestrial feeding. METHODS: From January to December 2013, we conducted 103 full-day focal follows on three social groups of southern bamboo lemurs H. meridionalis. We continuously recorded feeding time on all arboreal and terrestrial items, as well as whether the focal individual was under the canopy or exposed, and the distance to their nearest conspecific neighbor. All observed food items were collected and analyzed for macronutrient content. Daily climatic variables (temperature, precipitation), resource seasonality, daily path length (DPL), along with dietary and predation risk proxies, were used as fixed effects in a linear mixed model, with the daily proportion of terrestrial feeding as the dependent variable. RESULTS: Our model indicated that daily terrestrial feeding increased at cooler temperature, was associated with reduced DPL, and the intake of dietary metabolizable energy increased as terrestrial feeding increased. All other fixed effects were not significant predictors. DISCUSSION: Our study provides a window into the ultimate determinants of niche expansion: ancestral primates, in absence of their primary resources, may have initially descended to the ground in peripheral population range areas where the benefits (e g., nutritional pay-off) out-weighed the costs
Arboreal locomotion · Bamboo · Biology · Ecosystem · Geography · Habitat · Lemur · Niche · Population · Predation · Primate · Rainforest · Seasonality · Terrestrial ecosystem · Demography · Ecology · Pleistocene-Era Hominins and Archaeology · Primate Behavior and Ecology · Species Distribution and Climate Change
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| Unique citing works | 13 |
|---|---|
| Citations per year | 1,44 |
| Citation span | 2017 - 2025 (9) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 13 |