The 84th Annual Meeting of the American Association of Physical Anthropologists (2015)

GIS analysis of habitat usage by sympatric southern lesser (Galago moholi) and thick-tailed galagos (Otolemur crassicaudatus) in an Afromontane environment


1Department of Anthropology, Colorado College, 2Department of Anthropology, University of Colorado, 3Department of Anthropology, University of North Dakota

March 28, 2015 , Gateway Ballroom 2/3/4/5 Add to calendar

Southern lesser galagos (Galago moholi) and thick-tailed galagos (Otolemur crassicaudatus) are found in southern Africa, but may prefer different habitat types. G. moholi are reported from Acacia woodland habitats while O. crassicaudatus are described in woodland, riverine, and forest edge habitats. However, few studies have examined both species in sympatry. Given the differences in habitat use for allopatric G. moholi and O crassicaudatus, the two galagos may occupy different habitat types and not share overlapping ranges in areas of sympatry. We investigated the potential for these species to specialize on different habitat types at the Lajuma Research Center in Limpopo Province, South Africa.

To investigate this hypothesis, we trapped and censused galagos between 10 June and 10 July 2013, and 6 to 30 July 2014. When galagos were either trapped or observed during census walks, their location was recorded on a handheld GPS unit. Five line transects 100 m in length were established in the reserve for habitat description. Tree dbh, height, and species were recorded for sampled trees along transects. This information was used to classify habitat type for each transect. With this information plotted in ArcMap, we cross-referenced the location of each galago sighting or capture with the habitat type in which it was located. We then performed a regression in SPSS, which revealed there is no significant relationship between either species and a specific habitat type, suggesting they do not specialize by habitat type in areas of sympatry.

This research was funded by the Colorado College Social Sciences Executive Committee and the University of North Dakota.