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We employed a live-trapping grid encompassing several discrete vegetation patches to analyze spatial differences in the demographic structure of an Oxymycterus rufus (Fischer, 1814) population living on the delta of the Parana River, Argentina. Abundance, residence and reproduction of both females and males have been associated with microhabitats where food (measured through the availability of arthropods)...
Population dynamics of five rodent species were studied, from March 1991 to August 1994, in an area located in the ecotonal steppe of northwestern Patagonia, Argentina {at about 40°S). Seasonal and annual fluctuations in population numbers were found in all sigmodontine species. The reproductive period, sex ratio and longevity of the five species were also studied. Abrothrix xanthorhinus (Waterhouse,...
Genetic characteristics of the natural populations of domestic cat Fells siluestris /'. catus Linnaeus, 1758 were studied in four cities (Barcelona, Catalonia; Palma on Majorca, Balearic islands; Rimini, Italy; Buenos Aires, Argentina) at microgeographic level. The application of different analytical techniques in different population structures (colonies and subpopulations) showed that the degree...
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