Abstract

ABBA, Agustín M.  and  VIZCAINO, Sergio F.. Armadillos (Xenarthra: Dasypodidae) distribution in Buenos Aires province, Argentina. Mastozool. neotrop. [online]. 2011, vol.18, n.2, pp.185-206. ISSN 0327-9383.

In this paper we analyze the distribution of extant armadillos species in the Buenos Aires province. The information comes from fieldwork, literature and collections. The analyses contain temporal and spatial aspects. We obtained 401 georeferenced records from seven species. Dasypus hybridus and Chaetophractus villosus are the most common and widely distributed armadillos. C. villosus appears to be facilitated by new agricultural practices and D. hybridus shows an increase in habitat use. A movement was registered for Zaedyus pichiy in the southeast of the province, which can be explained by changes in climate conditions. For Chlamyphorus truncatus this review shows the need for further studies since its distribution area is being intensely degraded. The only extinct species, Tolypeutes matacus, probably disappeared due to climatic and environmental changes. Dasypus novemcinctus appeared in the province few years ago, in the ecoregion Delta e Islas del Paraná. The presence of Euphractus sexcinctus, Cabassous tatouay and Dasypus septemcinctus has not been verified. The history of armadillo's distribution presented in this paper reflects climate and environmental changes. We believe these are key taxa, and the monitoring of these species will allow us to observe and interpret trends related to the use and modification of the environment as well as the conditions of temperature and precipitation.

Keywords : Chaetophractus; Climatic and environmental changes; Dasypus; Tolypeutes; Zaedyus.

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