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.

Author: Taubar Voodooshicage
Country: Spain
Language: English (Spanish)
Genre: Art
Published (Last): 7 March 2017
Pages: 468
PDF File Size: 12.8 Mb
ePub File Size: 5.86 Mb
ISBN: 872-5-37020-474-7
Downloads: 14167
Price: Free* [*Free Regsitration Required]
Uploader: JoJora

Geographic Range Akodon montensis is found in the northeastern portion of Argentina, along the southeastern coast of Brazil, and throughout eastern Paraguay. Although the annual fluctuation in sex ratio could be expected to relate to an annual fluctuation in population abundance, we did not find this to be the case as neither population abundance nor density was found to vary significantly by season.

Nuestros resultados, en lo general, apoyan y abarcan estudios previos, demostrando que A. This maximum distance moved is calculated as the hypotenuse of a right triangle, the other 2 sides of which are the differences between the greatest and smallest values of row and column where an animal was encountered. Patterns of association with host and habitat: The same pattern was observed in several mammals, and particularly in individuals of Akodon montensis from Brazil Kasahara and Yonenaga-Yassuda ; Waters et al.

Fluctuating rodent populations and the risk to humans from rodent-borne disease. Total length of Akodon montensis ranges from 90 to mm, with hind feet ranging from 17 to 28 mm long, ears ranging from 11 to 21 mm long, and tails ranging from 32 to 98 mm long. Akodon montensis is found in the northeastern portion of Argentina, along the southeastern coast of Brazil, and throughout eastern Paraguay. For 1-way tests, F- value is shown for montesnis, and mean longevity is shown for seropositive and seronegative animals.

Montane grass mouse

Long-term studies of hantavirus reservoir populations in the southwestern United States: The B of Akodon montensis studied kontensis had identical morphology to those detected in Brazil Yonenaga-Yassuda et al. An interaction effect between serostatus and sex on longevity was significant in 1 locale R3B and 1 year We note that longevity, as measured in mark-recapture sampling such as this, can confound actual longevity with site fidelity.


False-positive occupancy models produce less-biased occupancy estimates for mnotensis rare and elusive bat species. Allozymic characterization and evolutionary relationships in the Brazilian Akodon cursor species group Rodentia-Cricetidae.

With seasons combined, males moved farther than females. Finally, Akodon montensis may play an important role in the seed dispersal of certain plant species as it is known to cache seeds throughout its home range. Limited reports exist regarding habitat Figueiredo and Fernandez ; Gentile and Fernandezabundance Bergallo and Magnussonfood habits Carvalho et al. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.

Though we edit our accounts for accuracy, we akdoon guarantee all information in those accounts. Reproductive strategies in Akodon azarae. These locales were chosen to represent a cross-section of potential micro-habitat types representing a continuum of human disturbance. Sex chromosomes of several rodents showed variation in the amount and distribution of heterochromatin Patton and Sherwood Longevity differed significantly according to serostatus in the dry season sexes akldonin males in the dry season, and in females in the wet season Table 5.

Line indicates F- value not estimable or no akodpn individuals were encountered.


Means with no letters indicate that 1 or both least-squared means were not estimable. The studied populations of Akodon montensis from Brazil showed high chromosome variability Kasahara and Yonenaga-Yassuda ; Fagundes et al. Individual characteristics in relation to Hantavirus infection —For all comparisons, seropositive animals had larger home ranges than seronegative ones Table 4.

Assessing space use in meadow voles: Means within the montensiss row followed by the same letter have nonsignificant differences on the basis of least-squares means of ranked values ; means within the same row followed by different letters have significantly different means of ranked values.


Role of maternal antibody in natural infection of Peromyscus maniculatus with Sin Nombre kaodon. Akodon montensis is a small rodent with a heavy body that is often described as closely resembling a vole. However, the number of positive signals varied between two and seven in different cells See Suppl. A discrete-time rodent—hantavirus model structured mobtensis infection and developmental akodpn.

Means within the same row followed by different letters have significantly different means of ranked values.

Within the buffer zone of the reserve are a number of inhabited areas, including indigenous Ache, Guarani and rural Paraguayan communities, minifundias small, subsistence farmslatifundias larger commercial farmsand estancias ranches. We cannot definitively exclude either of these possibilities on the basis of our data, and our provisional conclusion that fewer males akodoh females are present in the population during the transitional season needs further investigation.

Previous studies examining ecological variables e. These variables population abundance and density, sex ratio, and seroprevalence, and individual home range, home-range displacement, and longevity were transformed to normalized rank variables using the formula of Blomand these transformed variables were used in the analyses described below. Couto and Talamoni, ; Couto and Talamoni, ; Jordao, et al. If the capture was the first for the animal during the 8-night sampling session, a blood sample was obtained montensks retro-orbital bleeding and preserved in a 2-ml cryotube in liquid nitrogen.

Mean home-range values m 2 are shown for males and females and for seropositive and seronegative animals.