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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In conclusion, chromosome data for Akodon montensis showed high variability in all studied populations throughout montenssis geographic range. In males, we observed only the Xa; but in Brazilian populations males with both X types were found Kasahara and Yonenaga-Yossuda However, certain species depart from this pattern Graphodatsky et al.

Fragmentation effects on population density of three rodent species in secondary Atlantic rainforest, Brazil.

Population dynamics of pamas mice Akodon azarae: Viability of the critically endangered African wild ass Equus africanus population on Messir Plateau Eritrea. In Brazil and Argentina, two morphologies for the X chromosome were observed: Our finding of an absence of response of either population levels or seroprevalence to seasonality or to short-term precipitation patterns may be characracteristic of humid neotropical or subtropical systems with less pronounced seasonality and systems such as ours with low precipitation predictability Fig.


Longevity differed significantly according to serostatus in the dry montesnis sexes combinedin males in the dry season, and in females in the wet season Table 5.

Seasonal variation in prevalence of antibody to hantaviruses in rodents from southern Argentina. Five specimens four females and one male had 25 chromosomes in all analyzed cells due to the presence of a small submetacentric B chromosome Fig.

Estimation of Akodon montensis population and individual parameters. Montensiis, it is a known vector for hantaviruses. Throughout the study presence of antibodies to Andes virus by IFA was used as an indicator of reservoir serostatus. In Akodon montensis the frequency of individuals with Bs appears to vary among localities, but several populations were studied with low sample size. Home-range displacement was calculated as the straight-line distance between the UD centroid of an individual during 1 trapping session and the centroid during a subsequent session.

Akodon montensis montane akodont Facebook. Individual characteristics in relation to Hantavirus infection —For all comparisons, seropositive animals had larger home ranges than seronegative ones Table 4. Adult mass ranges from 19 to 57 g, with a mean of 42 g.

In this work both Montensls and Xs presented CH in the pericentromeric regions.

IUCN Red List of Threatened Species

Akodon montensis is found in the northeastern portion of Argentina, along the southeastern coast of Brazil, and throughout eastern Paraguay. Using remotely sensed data to identify areas at risk for hantavirus pulmonary syndrome. alodon


Chromosome preparations were obtained from bone marrow and testes Ford and Hamerton ; Evans et al. We used akoeon Huggins closed-capture model, allowing variable capture probabilities among sampling events trapping nights and constraining the probability of capture and recapture to be equal.

Additionally, two XY females and two variants of montenssis X chromosomes were found. F- values with d. Acknowledgements We thank to Marcelo Cavicchia and to several members of the LGE for the cooperation in the fieldwork. Biodiversity loss and emerging infectious disease: Incidence of plague associated with increased winter—spring precipitation in New Mexico.

Montane grass mouse

Finally, in the present paper we report for the first time a trisomy of chromosome 11 in a single individual. We accepted main or interaction effects to be significant only when the overall model was significant.

The Royal Society Analyses of individual-level characteristics. Chromosome pairs with positive signals after silver staining. In our study population density varied considerably among our 3 sampling locales and akodn our 2 sampling years. In contrast to the studies of Anyamba et al.