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Red howling monkey use of specific defecation sites as a parasite avoidance strategy
1Department of Anthropology, Rutgers University
Animal Behaviour
|August 1, 1997
Summary
Red howling monkeys (Alouatta seniculus) in the Amazon defecate in specific, vegetation-free sites. This behavior likely prevents contamination of food and pathways, serving as a key parasite avoidance strategy.
Area of Science:
- Primate behavior
- Ecology
- Zoology
Background:
- Red howling monkeys (Alouatta seniculus) exhibit specific defecation site selection.
- Understanding this behavior is crucial for primate ecology and disease transmission studies.
Purpose of the Study:
- To examine differences in vegetation profiles between defecation sites, behavioral sites, and random sites used by red howling monkeys.
- To investigate the potential role of defecation site selection in parasite avoidance.
Main Methods:
- Vegetation profile analysis of selected sites within the monkeys' ranging area.
- Comparison of leaf intercepts at different forest levels for behavioral, defecation, and random sites.
Main Results:
- Defecation sites showed significantly fewer leaf intercepts compared to foraging and traveling areas.
- These sites were characterized by reduced underlying vegetation.
Conclusions:
- Defecating in areas with minimal undergrowth reduces contamination risk to food sources and arboreal pathways.
- This targeted defecation behavior is a likely parasite avoidance strategy for red howling monkeys.