| survey of black howler (alouatta pigra) and spider (ateles geoffroyi) monkeys in the mayan sites of calakmul and yaxchilán, mexico and tikal, guatemala. | surveys of populations of spider and howler monkeys were conducted at the mayan sites of calakmul and yaxchilán, mexico and tikal, guatemala. the forests in which these sites are found are part of the largest landmass of tropical rain forests present in mesoamerica, encompassing about 4 million ha. triangulation of monkey vocalization combined with ground surveys was used to determine the presence of howler and spider monkey groups. howler monkey mean troop size at these sites varied from 6.6+/- ... | 2004 | 14586803 |
| diet of spider monkeys (ateles geoffroyi) in mesoamerica: current knowledge and future directions. | here we review all published articles and book chapters, as well as unpublished theses and data of ateles geoffroyi diet to (1) summarize the literature; (2) synthesize general feeding patterns; (3) document plant taxonomic similarity in diet across study sites; and (4) suggest directions for future research and conservation priorities. we found 22 samples from five countries: mexico, guatemala, el salvador, costa rica and panama. tropical wet forest is the most studied habitat (n=13 samples), f ... | 2009 | 18942095 |