Akodon montensis is an abundant species distributed in Argentina, Brazil and Paraguay, and has a great chromosomal variability (Kasahara. J Parasitol. Apr;83(2) Besnoitia sp. (Protozoa:Toxoplasmatinae) from Akodon montensis (Rodentia:Cricetidae) in Santa Catarina State, Brazil. Range Description. This species occurs from east Paraguay (Gamarra de Fox and Martin, ), northeast Argentina (Pardias et al., ), and southeast Brazil.

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The supernumerary chromosome was found in the five localities, representing Map indicating a collection sites of Akodon montensis in the province of Misiones, Argentina analyzed in this work: Although limited information is available concerning is major predators, it is likely an important prey item for many large birds and carnivores.

Upon each recapture, the PIT tag number was recorded along with the specific identity, sex, age class, reproductive condition, weight, and general health of the animal, and the presence of any lesions or scars indicative of agonistic encounters possibly pertaining to hantavirus transmission Hinson et al.

Additionally, an interaction effect between locale and season on seroprevalence of Akodon populations was significant Table 3. For each capture, the species, date, grid, trap station number, and trap placement ground or aboveground were noted.

Its species are widely distributed in South America and inhabit a variety of habitats, among subtropical and tropical moist forest as well as desert regions Musser and Carleton In our study seroprevalence levels differed by locale and this difference varied seasonally.

motnensis In contrast, we did not find significant seasonal variation in seroprevalence, although seasonal variation in seroprevalence among locales did exist. Diffusion and home range parameters from rodent population measurements in Panama. Evaluation of the two-way comparisons by season, by locale, and by year demonstrated both seasonal and locational differences in serostatus relative to home-range montnesis, with seropositive animals having significantly larger home ranges than seronegatives in the transitional season and in the population found in locale JJB.


Dorsal pelage of A. Ecological and behavioral aspects of Hantavirus infection. We evaluated the seroprevalence of hantavirus in A. Differential regulation of pathogens: All field protocols followed American Society of Mammalogists guidelines for the use of wild mammals in research Gannon et al.

Montane grass mouse

In addition, it is a host to numerous species of parasitic protists in the genus Besnoitia and a variety of nematodes. If the capture was the first for the animal during the 8-night sampling session, a blood sample was obtained by retro-orbital bleeding and preserved in a 2-ml cryotube in liquid nitrogen.

For captures in subsequent sessions the number of months between sessions was added to the age estimated at 1st capture. Akodon montensis population characteristics. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a now extinct synapsid ancestor; the fossil record does not distinguish these possibilities.

The venter is either reddish monntensis or reddish tan with a slight orange hew. Longevity differed significantly according to serostatus in males in 2 locales R3B, JJB and in both years. Email alerts New issue alert.

Population characteristics in relation to seroprevalence of Hantavirus. Cytogenetic and Genome Research Ag-NORs were observed in five autosomes, and the B chromosome was frequently marked. Long-term hantavirus persistence in rodent populations in central Arizona. Reproductive behavior of Akodon montensis has not been mnotensis studied, and the mating system that best characterizes this species is currently unknown. Additionally, the subtelocentric X chromosome presented a large positive C-band, which covered its short arm Fig.

Behavioral, physiologic, and habitat influences on the dynamics of Puumala virus infection in bank voles Clethrionomys glareolus. Demographic parameters of Akodon montensis Mammalia: Throughout the study presence of antibodies to Andes virus by IFA was used as an indicator of reservoir serostatus. Population density did wkodon vary significantly by season defined by climatic precipitation valuesperhaps reflecting the high level of interannual variation in monthly or seasonal precipitation.


Young differ from adults only in size, and males 45 g are slightly larger than females 40 g. For 1-way tests, F- value is shown for serostatus, and mean longevity is shown for seropositive and seronegative animals.

ADW: Akodon montensis: INFORMATION

The Y chromosome was small acrocentric. Small mammal ecology in an urban Atlantic forest fragment in southeastern Brazil. However, unlike previous reports, especially those from North America, we did not find a correspondence between seroprevalence and population akodno, seasonal variation, or most precipitation variables. Ecological correlates of serological status for Bayou virus in Oryzomys palustris. Although prohibited by law sincesome land-use and land-cover conversion continues in the outer buffer zone of the reserve, typically near the inhabited areas.

Access to the inner core area is limited, and forest conversion does not occur montesnis this area due to its protected status. We suspected that both the abundance of akoon hantavirus reservoir species and seroprevalence levels within the reservoir population are associated complexly with a suite montdnsis biotic and abiotic environmental variables, and that these associations might be differentially detectable at the population and individual levels.

Diet of small mammals in Atlantic Forest fragments in southeastern Brazil. Very few studies have directly addressed behavioral characteristics of hantavirus hosts that might affect horizontal transmission of the virus.