| sero-epidemiological survey for toxoplasmosis in wild new world monkeys (cebus spp.; alouatta caraya) at the paraná river basin, paraná state, brazil. | in this study, we captured 60 wild new world monkeys (cebus spp.; alouatta caraya) at the paraná river basin, paraná state, brazil, and modified agglutination test (mat) was performed to evaluate anti-toxoplasma gondii antibodies. prevalence was 30.2% (13/43) in cebus spp. (capuchin monkeys) and 17.6% (3/17) for a. caraya (black and golden howler monkeys). mat showed antibody titers of 16 (15/16) and 64 (1/16). herein, we have observed an odds ratio (or)=4.67 (1.06<or<21.42, p<0.01) among monkey ... | 2005 | 16006040 |
| mitochondrial sequence diversity of the southernmost extant new world monkey, alouatta caraya. | variability in mitochondrial dna sequences was analyzed in the howler monkey, alouatta caraya, in order to delineate evolutionary relationships among populations in the most southerly distributed new world monkey. based on new and previously published sequence data, fourteen cytochrome b haplotypes were observed among 33 howlers sampled in argentina, paraguay and brazil, and grouped in two main haplogroups. in northeastern argentina and southern paraguay, new sequence data on 73 specimens sample ... | 2007 | 17126568 |
| use of traps to capture black and gold howlers (alouatta caraya) on the islands of the upper paraná river, southern brazil. | howlers (genus alouatta) are widely captured with the use of anesthetic projectiles; however, no capture protocol involving the use of traps has been described to date. in the present study we describe the first efficient capture program for black and gold howlers (alouatta caraya) using traps, which was implemented on the islands of the upper paraná river in southern brazil. we constructed two trap models with either manual or automatic activation (trap a with two entrances and guillotine-type ... | 2007 | 17177316 |
| sympatry between alouatta caraya and alouatta clamitans and the rediscovery of free-ranging potential hybrids in southern brazil. | records of sympatry between alouatta caraya and a. clamitans are rare despite their extensive range overlap. an example of their current sympatry and the rediscovery of free-ranging potential hybrids of a. caraya and a. clamitans in the forests of the upper paraná river, southern brazil, are reported in this paper. eight groups were observed in the study area: five monospecific groups of a. caraya, two of a. clamitans, and a group containing two adult males and two adult females of a. caraya and ... | 2007 | 17310403 |
| paracoccidioidomycosis in wild monkeys from paraná state, brazil. | the aim of this study was to evaluate the seroprevalence of paracoccidioides brasiliensis infection in wild new world monkeys (cebus sp. and alouatta caraya). a total of 93 animals (cebus sp., n = 68 and alouatta caraya, n = 25) were captured in the paraná river basin, paraná state, brazil and the serum samples were analyzed by elisa and immunodiffusion using p. brasiliensis gp43 and exoantigen as antigens, respectively. the seropositivity observed by elisa was 44.1% and 60% for cebus sp. and a. ... | 2007 | 17914662 |
| group size and composition of black-and-gold howler monkeys (alouatta caraya) on the upper paraná river, southern brazil. | in social mammals, group size, sex and age-class composition are important parameters that are required to understand population dynamics and determine conservation strategies. these parameters are known only poorly for the black-and-gold howler monkey (alouatta caraya). here, we studied groups of a. caraya on islands and adjacent banks of the upper paraná river of southern brazil, to examine variability in group size and composition. this location is important for this species because of the hi ... | 2009 | 19034383 |