| captive-born cotton-top tamarins (saguinus oedipus) respond similarly to vocalizations of predators and sympatric nonpredators. | what types of cues do callitrichid primates use to detect and respond to predators? do they respond to predator-specific cues or to more general cues? the evidence for these questions remains conflicting. we presented captive-born and reared cotton-top tamarins with no previous exposure to predators (or predator cues) with vocalizations from three potential predators of cotton-top tamarin in the wild (white hawk, jaguar, and tayra) and with vocalizations from sympatric nonpredators (black-faced ... | 2008 | 18473378 |
| hemosporidian parasites in forest birds from venezuela: genetic lineage analyses. | avian hemosporidian parasites of the genera haemoproteus, plasmodium, and leucocytozoon are transmitted by different dipteran vectors. in the present work, we looked for the presence of these parasites in 47 birds from 12 families, which were sampled in the migratory corridor paso de portachuelo, located at the henri pittier national park, venezuela. the presence of the parasites was evidenced by amplification of a region of 471 bp of their cytochrome b gene. this region of the marker presents e ... | 2012 | 23050478 |