Diet and Activity Budget in Colobus angolensis ruwenzorii at Nabugabo, Uganda: Are They Energy Maximizers?
| Autor: | Amtul H Changasi, Julie A. Teichroeb, T. Jean M. Arseneau-Robar, Evan Turner |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
Rest Foraging Population Colobus Motor Activity Foregut fermentation Toxicology biology.animal Animals 0501 psychology and cognitive sciences 0601 history and archaeology Primate Energy maximization Uganda 050102 behavioral science & comparative psychology Original Research Article education Ecology Evolution Behavior and Systematics Colobus angolensis education.field_of_study Appetitive Behavior 060101 anthropology biology 05 social sciences 06 humanities and the arts biology.organism_classification Diet Plant Leaves Food resources Energy expenditure Fruit Animal Science and Zoology Female |
| Zdroj: | Folia Primatol (Basel) |
| Popis: | Introduction: Colobine monkeys are specialized folivores that use foregut fermentation to digest leaves. The slow process of fermentation forces them to spend a lot of time resting and to minimize their energy expenditure to subsist on a lower-quality diet. Methods: We recorded the diet and activity budget of Colobus angolensis ruwenzorii, which form a three-tiered multi-level society, at Lake Nabugabo, Uganda, over 12 months using scan sampling on adults and subadults, to determine whether they utilize the energy minimization strategy typical of colobines. Results: We found that the annual diet was primarily comprised of high-quality food resources (young leaves 65% and fruit 31%), and fruits were the only plant part the monkeys selected when available. Both the fruits and young leaves of some species were preferred food items in some months, and mature leaf consumption correlated negatively with preferred food availability. Mature leaves appear to be a fallback food for this population but are rarely relied upon (3%). The C. a. ruwenzorii at Nabugabo spent less time resting (40%) and more time moving (25%) than is typical for other species of black-and-white colobus. Discussion/Conclusion: The high-quality diet of this population appears to allow them to utilize an energy maximization strategy. Their reliance on food items that tend to be clumped in space and time likely explains the frequent fission-fusion behaviour that we observe between core units. Our findings demonstrate that the foraging strategies of colobines may be more flexible than was previously thought and illustrate how food availability and distribution can impact primate social organization. |
| Databáze: | OpenAIRE |
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