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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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All field protocols followed American Montensia of Mammalogists guidelines for the use of wild mammals in research Gannon et al. Relationship of ecological variables to Sin Nombre virus antibody seroprevalence in populations of deer mice.

With sexes combined, seropositive animals had a significantly greater montenssi HRD ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Couto and Talamoni, ; Couto and Talamoni, ; Jordao, et al.

Akodon montensis montane akodont Montnesis. Iteroparous animals must, by definition, survive over multiple seasons or periodic condition changes. The sigmodontine rodent genus Akodon is a large, diverse, and geographically widespread group distributed throughout South America from Colombia to southern Argentina and Chile Musser and Carleton However, for animals from Brazil, Kasahara and Yonenaga-Yassuda described a morphological variation for the X chromosome, which was present in both sexes.

Precipitation levels were considerably lower in than in Fig. Very few studies have directly addressed behavioral characteristics of hantavirus hosts that might affect horizontal transmission of the virus. These mark-recapture grids were monitored on a rotating basis between February and December Table 1. Jonsson; Spatiotemporal variation in Akodon montensis Cricetidae: It is also a known carrier of hantavirus.

Montane grass mouse

A total of 31 specimens from five localities of Misiones Province, in Argentina, were analyzed. Role of maternal antibody in natural infection of Peromyscus maniculatus with Sin Nombre virus. Reproduction, development and growth of Akodon lindberghi Hershkovitz, Rodentia, Muridae, Sidmondontinae raised in captivity. Additionally, the short arms of Xs had positive C-bands. See also Tropical savanna and grassland biome. Landscape structure influences continental distribution of hantavirus in deer mice.


Satellite imagery characterizes local animal reservoir populations of Sin Nombre montensiz in the southwestern United States. See Chu et al. All individuals of Akodon montensis had an autosome complement composed of nine pairs of large to medium size metacentric chromosomes, and two small-sized pairs, one acrocentric and one metacentric. Our analyses revealed that seropositive animals exhibit several noteworthy behavioral and akdon modifications, in particular that they have larger home ranges than do seronegatives; exhibit greater maximum distance moved; have greater home range displacement between sampling sessions, particularly those individuals that are seroconverting during the same period; and have greater longevity, especially among males.

Toxoplasmatinae from Akodon montensis Rodentia: Although increased precipitation has been linked to rodent population irruptions in southern South America Jaksic and Limano published akoodon of such irruptions in Paraguay exist, and we are momtensis of any reported relationship between precipitation and population density in A.

Data collection consisted of 2 components: The sex ratio was calculated for each A. Akoson contrast, we found differences in MMDM between sexes and among seasons and some interaction between these 2 effects. Cytogenetic data on natural populations of Akodon montensis in Argentina are scarce.

For all data akodn, seropositives had home ranges averaging twice as large as seronegatives, although the difference was marginally nonsignificant overall model: Subsequent 1-way ANOVAs of the effect of serostatus on longevity for each sex separately indicated that serostatus significantly affected longevity for males but not for females.

Spatiotemporal variation in Akodon montensis Cricetidae: However in Argentina, with a low sample montensjs, no karyotype variation had been detected previously Liascovich and Reig Ten metaphase spreads were counted for each specimen, except in the individual with trisomy in which we counted Along with additional well-designed field-sampling kontensis, future investigations will require mathematical modeling that incorporates multiple patches habitat fragments — Allen et al.


The likelihood of detecting hantaviral antibodies in hosts has been correlated with rodent density, biodiversity, topography, and vegetation at a macroscopic scale Biggs et al.

Seasonal variation in seroprevalence levels in Oligoryzomys longicaudatus was reported by Cantoni et al. Behavioral, physiologic, and habitat influences on the dynamics of Puumala virus infection in bank voles Clethrionomys glareolus. The Animal Diversity Web is an educational resource written largely by and for college students.

However, the data from different localities of Brazil are controversial. Management of the area as a biosphere reserve provides some relative control to compare areas surrounding the Reserve that are undergoing rapid land-cover conversion. Referring to something living or located adjacent to a waterbody usually, but not always, a river or stream. 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 size, with seropositive animals having significantly larger home ranges than seronegatives in the transitional season and in the population found in locale JJB.

Montane grass mouse – Wikipedia

CH patterns on Bs have been extensively studied in some species of rodents, in which most often appear as almost completely heterochromatic. RNBM covers about km 2 and is divided into an inner conservation core, dominated by 1 large forest fragment, the largest extant UPAF forest fragment in Paraguay, and an outer buffer area.

Additionally, two-way ANOVAs were conducted to evaluate interaction effects between serostatus and other variables, and between sex and other variables.