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.

Author: Zoloshicage Dushura
Country: Paraguay
Language: English (Spanish)
Genre: Software
Published (Last): 6 December 2006
Pages: 141
PDF File Size: 18.47 Mb
ePub File Size: 18.73 Mb
ISBN: 118-5-54872-855-4
Downloads: 51852
Price: Free* [*Free Regsitration Required]
Uploader: Vulrajas

Timing of births in sympatric brown howler monkeys Alouatta fusca clamitans and northern muriquis Brachyteles arachnoides hypoxanthus Am J Primatol. Chiarello, ; Martins, ; Martins, ; Richardson, Primary Diet herbivore folivore frugivore Plant Foods leaves fruit flowers Predation Neotropical primates are alouatya frequently prey upon by birds and felids. Assuming that an infected mosquito can transmit the disease during its entire life span, the researchers therefore estimated the maximum duration of the infectivity period as days Mondet There is a lot of discussion in the literature regarding this parameter Pope A latitudinal color gradient occurs in the subspecies Alouatta guariba clamitans.

American Journal of Primatology, 70 6: It was estimated that it would take longer aloyatta males to mate and reproduce since they must be able to secure a troop of females first.

Initial population size n – According to a best guess the population of Misiones could be around individuals Holzmann et al. Streier, Range lifespan Status: When encounter rate is reduced, both within the population clamitwns howler monkeys and between howler monkey populations and an outside source of YFV, the number of outbreaks drops to just one or two events during the years.


Infant hybrids in a newly formed mixed species group of howler monkeys Alouatta guariba flamitans and Alouatta caraya in northeastern Argentina.

Southern brown howler

Alouatta species are relatively well adapted for surviving in small, isolated parts of the forest due to their relatively small home ranges. Home ranges are small, up to 31 hectares for a group of 15 to 20 individuals.

For example, in the first outbreak episode of a given model iteration Fig. Chapman and Hall; New York: Chromosome Research, 10 8: This may be considered a true minimum value, since in Argentina the last YFV transmission recorded was in Goenaga et al. In birds, naked and helpless aloyatta hatching. Neotropical Primates, 2 4: Fruit consumption depends on location and can be a significant part the brown howler diet depending on availability.

First, we considered the period of viraemia in Alouatta individuals using data available from the literature, i.

Neotropical Primates, 7 gusriba Louis encephalitis viruses in French Guiana. Transmission rate – We considered this variable to be a function of the natural infection rate of YFV in mosquitoes. Alonso ApoioCamila C.

Anogenital rubbing in females, which spreads gjariba signals through feces, urine, or vaginal secretions, is hypothesized to signal reproductive status. Susceptible state – Encounter rate – Considering that YFV is a vector-transmitted pathogen with multiple potential hosts and vectors, the traditional concept of contact rates among diseased host individuals does not fit in our case.

Neotropical primates are most frequently prey upon by birds and felids. To make the software able to model the transmission of a vector-borne disease, we conducted basic adaptations in some specific components see Input parameters guairba stochastic disease yuariba models.


No – Maximum litter size 1 – Overall offspring sex ratio In our metamodel, population viability was predicted using the Vortex, while the disease epidemiological dynamics were simulated using Outbreak.

Conservation biology of the genus Alouatta. Alouattz can better understand the dynamics of disease by looking in detail at the Outbreak model output for single iterations.

Impact of yellow fever outbreaks on two howler monkey species Alouatta guariba clamitans and A. Social structure of Alouatta guariba clamitans: Alcides Pissinatti, Amely B.

Southern brown howler – Wikipedia

For this specific analysis, YF was set as a potential catastrophe Crockett and an inter-epidemic interval of 15 aluatta on average for Argentina Di Bitetti et al.

American Journal of Primatology Males are territorial and defend their home ranges and mates through intimidation and fighting. Baseline model – Vortex model featuring no YF outbreaks showed a positive stochastic population growth rate 0.

Persistence of neutralizing antibody years after immunization with 17D yellow fever vaccine. Brown howlers inhabit lowland, submontane and montane forests clamians well as inland semideciduous seasonal forests.

Brown howlers form multi-male, multi-female groups; single-male, multi-female groups; and single-male, single-female groups.

The isolation of yellow fever virus from the livers of naturally infected red howler monkeys. Journal of Mammalogy, For more details about methods for metapopulation input parameters in Vortex see Lacy et al. A Primatologia no Brasil — Population biology of infectious diseases.