| [excretion of schistosoma mansoni eggs from experimentally infected cebus apella macrocephalus]. | | 1972 | 4626068 |
| [susceptibility of cebus apella macrocephalus spix 1823, to experimental schistosoma mansoni infection]. | | 1962 | 13872809 |
| assessment of mammal reproduction for hunting sustainability through community-based sampling of species in the wild. | wildlife subsistence hunting is a major source of protein for tropical rural populations and a prominent conservation issue. the intrinsic rate of natural increase. (rmax ) of populations is a key reproductive parameter in the most used assessments of hunting sustainability. however, researchers face severe difficulties in obtaining reproductive data in the wild, so these assessments often rely on classic reproductive rates calculated mostly from studies of captive animals conducted 30 years ago ... | 2016 | 27917537 |
| temporal variation in black-caiman-nest predation in varzea of central brazilian amazonia. | on the amazon floodplain, the main predators of black caiman (melanosuchus niger) eggs are jaguars (panthera onca), tegu lizards (tupinambis teguixim), capuchin monkeys (sapajus macrocephalus) and humans (homo sapiens). in this study, we investigated the relationship between predator attacks on nests and incubation period, and evaluated the influence of initial predation on subsequent predation in the mamirauá sustainable development reserve. we also evaluated the influence of presence of female ... | 2017 | 28854258 |
| tool use by amazonian capuchin monkeys during predation on caiman nests in a high-productivity forest. | descriptions of new tool-use events are important for understanding how ecological context may drive the evolution of tool use among primate traditions. here, we report a possible case of the first record of tool use by wild amazonian capuchin monkeys (sapajus macrocephalus). the record was made by a camera trap, while we were monitoring caiman nest predation at mamirauá reserve in central amazonia. an adult individual was registered in a bipedal posture, apparently using a branch as a shovel to ... | 2017 | 28281099 |
| menstrual cycle in four new world primates: poeppig's woolly monkey (lagothrix poeppigii), red uakari (cacajao calvus), large-headed capuchin (sapajus macrocephalus) and nocturnal monkey (aotus nancymaae). | genital organs from 33 nocturnal monkeys aotus namcymaae, 29 poeppig's woolly monkeys (lagothrix poeppigii), 21 red uakaris (cacajao calvus) and 11 large-headed capuchins (sapajus macrocephalus) were histologically analyzed in order to describe the endometrial changes related to the ovarian cycle. a. nancymaae and s. macrocephalus showed histological evidence of menstrual cycle with the detachment of the most superficial endometrium and the subepithelial reabsorption of the endometrial functiona ... | 2019 | 30269006 |
| co-infection with filarial nematodes in sapajus macrocephalus and cebus albifrons (primates: cebidae) from the peruvian amazon. | dipetalonema caudispina (molin, 1858) and d. gracile (rudolphi, 1809) (filarioidea: onchocercidae) are two of six known species of filarial nematodes that parasitize neotropical non-human primates. adult filariae were collected from the thoracic and abdominal cavities of 38 of 44 specimens of sapajus macrocephalus (spix, 1823) and nine of ten specimens of cebus albifrons (humboldt, 1812) (primates: cebidae), distributed in the yavarí-mirín river basin and used locally for human consumption. co-o ... | 2019 | 29606157 |