Apesar de Alouatta guariba clamitans apresentar ampla distribuição na Mata Atlântica, do rio Doce (ES) ao rio Camaquã (RS) e a oeste até o norte da Argentina. The social group of the brown howler monkey, Alouatta guariba clamitans Cabrera, is typically small (2–12 individuals), with one or two adult males, and. Adult females are covered in dark brown or reddish brown hair. A latitudinal color gradient occurs in the subspecies Alouatta guariba clamitans. Males tend to be.

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Tese Doutorado em Zoologia. Projeto Bugio – Indaial SC.

Southern brown howler – Wikipedia

The increased prevalence of this protozoa in howler populations e. Neotropical Primates, 14 3: Neotropical Primates, 7 4: Social structure of Alouatta aloustta clamitans: In general, howler monkeys have small and widely overlapping home ranges.

Neotropical Primates, 2 3: American Journal of Primatology, El Ateneo, Buenos Aires, Argentina.

Sympatry between Alouatta caraya and Alouatta clamitans and the rediscovery of free-ranging potential hybrids in southern Brazil. Specifically, changing the baseline values for the incubation latent period of the pathogen and the infectious period lead to only very small impacts on population outcome. From those foci, epidemic waves of viral dissemination tend to occur in cycles of between seven years Vasconcelos et al.

Seasonal and age-related differential mortality by sex in the mantled howler monkey, Alouatta palliata. There could be a complex interplay between inbreeding and disease Spielman et al. Rubbing behavior in brown howlers serves a variety of functions.

ADW: Alouatta guariba: INFORMATION

Systematics and body size: Boletim do Museu Municipal, 1: House-to-house human movement drives dengue virus transmission. The arboviruses epidemiology and ecology. Often, female brown howlers initiate extra-group copulations and are more prone to do so in multi-male groups.


How do howler monkeys cope with habitat fragmentation? Timing of births in sympatric brown howler monkeys Alouatta clamtians clamitans and northern muriquis Brachyteles arachnoides hypoxanthus.

This may be considered a true minimum value, since in Argentina the last YFV transmission recorded was in Goenaga et al. A latitudinal color gradient occurs in the subspecies Alouatta guariba clamitans.

As an alternative for the sensitivity analysis, we included the extrinsic incubation period in the mosquito Mondet clamiitans, Johansson et al.

Their folivorous diet may account for the ability to breed year-round, as mature leaves are available throughout the year and provide a relatively stable source of energy. Outros — Mono Aullador. See accompanying the main text for detailed explanation of input parameter definitions. Sometimes genital inspection also occurs.

Contudo, Rylands et al. These findings corroborate those of Crockett who cites that fragmentation of forests may actually reduce YF transmission and management programs could reduce probability of extinction of howler groups through reintroductions or translocations in most impacted forest fragments. Brown howlers are year-round breeders.

They also produce loud calls to signal group strength, and by listening to the calls of rival groups, they can assess the strength of their opponents. Brown howlers are diurnal and territorial. Demographic information such as breeding and mortality rates for general sex-specific stages juveniles, sub-adults and adults is user-specified and used to project total population size.

For more details about the conceptual basis for adapting directly transmitted disease to mosquito-borne disease systems see Adams and Kapan and Manore et al. The sound is produced in their deep jaws, which surround an enlarged larynx and hyoid apparatus.


Increased human contact has been shown to increase the prevalence of parasites in brown howlers.

Reproduction and population growth in free-ranging mantled howling monkeys. There is a significant amount of measurement uncertainty associated with many of the input parameters used in our Vortex and Outbreak models of YF disease epidemiology. Genetic consequences of habitat fragmentation in black-and-gold howler Alouatta caraya populations from northern Argentina. The analyses presented here represent one of the first detailed applications of a metamodel linking the well-known population viability analysis software package Vortex to a sophisticated model of infectious disease epidemiology, Outbreak.

Reproductive consequences of variation in the composition of howler monkey Alouatta spp groups. They are endemic to the Atlantic Forest ecoregion of Brazil and Argentina. Vortex is a Monte Carlo simulation for population viability analysis that examines the effects of deterministic forces as well as demographic, environmental and genetic stochastic events on wild population abundance and growth dynamics.

The phylogeny of howler monkeys Alouatta, Platyrrhini: They spend most of their time in the upper canopy, and monkeys guariga travel to find seasonally available food like fruit.

Southern brown howler

The baseline model reflects the biological potential of brown howlers. Adult male brown howlers exhibit extreme rubbing behavior as a marker of dominance and reproductive status.

The sensitivity analysis showed that the frequency and impact of outbreaks is strongly affected by the encounter rate Fig.