Document Detail

Mineral and phytochemical influences on foliage selection by the proboscis monkey (Nasalis larvatus).
MedLine Citation:
PMID:  9050369     Owner:  NLM     Status:  MEDLINE    
Primate diets may be influenced by the phytochemical composition of potential food resources. This study examined the protein, fiber, and mineral content of leaves from plant species used as food resources by the proboscis monkey (Nasalis larvatus) in Tanjung Puting National Park, Kalimantan Tengah, Indonesia. In addition, leaf samples were collected from nonfood resources based upon relative density in previously established vegetation plots. Higher concentrations of crude protein, phosphorus, potassium, and zinc were found in young leaves. Mature leaves had higher levels of magnesium, manganese and calcium compared to young leaves. Leaves from species used as food resources were significantly higher in protein (9.9% vs. 8.5%) and lower in fiber (30.5% vs. 40.0% acid detergent fiber) than the leaves from species not used as food sources. Food resources also contained higher concentrations of phosphorus and potassium; nonfood resources contained higher concentrations of calcium and manganese. Proboscis monkeys appear to follow the typical colobine trend: a diet relatively high in protein and low in digestion inhibitors (fiber). Little previous work has examined mineral content as a selection factor in primate food choices. Leaves from species used as food resources contained less calcium (0.35%), iron (34 mg/kg) and phosphorus (0.15%) than dietary standards established for captive nonhuman primates, but values were similar to those established for ruminant herbivores. Other mineral concentrations (potassium, magnesium, manganese, sodium, and zinc) met or exceeded recommended levels for both primates and ruminants. Comparison of diverse nutrients in native diets may provide insight into suitability of domestic animals models for providing adequate diets in captive feeding situations, as well as help define resource limitations in natural environments.
C P Yeager; S C Silver; E S Dierenfeld
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of primatology     Volume:  41     ISSN:  0275-2565     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  1997  
Date Detail:
Created Date:  1997-05-07     Completed Date:  1997-05-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  117-28     Citation Subset:  IM    
Louis Calder Center, Fordham University, Armonk, New York 10504, USA.
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MeSH Terms
Diet / veterinary*
Feeding Behavior / psychology*
Food Preferences / psychology*
Minerals / analysis
Nutritional Requirements
Plant Leaves / chemistry*
Plant Proteins / analysis
Reg. No./Substance:
0/Minerals; 0/Plant Proteins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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