Conclusion

1. A. occidentalis and L. edwardsi are both pair-living: A. occidentalis in small cohesive family groups, L. edwardsi in dispersed family groups.

2. A. occidentalis and L. edwardsi show comparable home-range sizes, travel distances, and activity patterns across the entire year, but distribution within the entire year differs. This is most notable in travel distances and vocal behavior.

3. The activity budget of A. occidentalis differs from that of L. edwardsi. Avahi spends significantly more time feeding than does Lepilemur. It may be hypothesized that Avahi has a higher basal metabolic rate.

4. Avahi selects larger food patches and leaves of rarer tree species than does Lepilemur.

This fits predictions based on a resource-defense model for uniform pairs (sensu van Schaik and Kappeler, 2003). In this respect, Lepilemur fits predictions for solitary-but-social species despite being pair-living. Whether this is due to its dispersed pair-living, the mode of pair-living (uniform vs. variable pair-living sensu van Schaik and Kappeler, 2003), or other factors remains unknown.

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