Animal captures
For this study we captured adult two-toed (n = 36)
and three-toed sloths (n = 32), and subadult sloths
(n = 4; n = 8, respectively) by hand from trees from
February 2010 to January 2013. Captured individuals
were classified as subadults or adults based on body mass
described by Peery & Pauli (2014). Each individual was
marked with uniquely coded PIT tags (Biomark, Boise,
ID) inserted subcutaneously between the shoulder blades.
Additionally, adult males of adequate size were fittedwith
radio-collars (Mod-210, Telonics Inc., Mesa, AZ, USA)
to track their movement, and adult females were fitted
with uniquely identifiable colour collars. All sloths were
relocated every 1–10 d (with aminimum of 24 h between
relocations)andthe majority (98%) of all sloth relocations
occurred during daylight hours.
Tree use
We classified tree use based on the tree species occupied
by an individual at the time of relocation and proportion
of species used was calculated for each sloth. Tree
species were identified with aid of Zuchowski (2007) and
following the nomenclature of Hammel et al. (2003). We
used a likelihood ratio test for goodness-of-fit to compare
tree use between the two sloth species. Using these data,
we also characterized the diversity of tree species used
by each individual and by all individuals pooled for each
species with Simpson’s index of diversity.