Observations on the biology of rodents in Uruguay /

Abstract

For financial assistance, I am indebted to the United States Army Medical Research and Development Command which provided support for the expedition under the auspices of Grant No. DA-MD-49-193-63-G82 to the Department of Mammalogy of the American Museum. In the spring of 1964, the University of Kansas awarded me a travel grant enabling me to visit the American Museum to examine specimens during a critical part of the study.

Population demography of Oxymycterus rufus (Rodentia: Cricetidae) inhabiting a patchy environment of the delta of the Parana River, Argentina

“…Since O. rufus is mainly an insectivorous species (Barlow 1969, Kravetz 1972, Dalby 1975, we have assessed food availability on the basis of the abundance of arthropods. Sampling of surface--dwelling arthropods was performed on a monthly basis in 1990, using 20 pitfall traps (four in each microhabitat), during 15 consecutive days.…”

“…Studies on O. rufus' feeding habits suggest this species to be mainly insectivorous even though it also preys on other invertebrates and eats plants (Barlow 1969, Kravetz 1972, Dalby 1975.…”

Vertex evoked potentials in a rating-scale detection task: relation to signal probability

“…Many subsequent studies have verified that the amplitude of the P3 evoked by one of a set of clearly discriminable, task-relevant stimuli 'increases as a function of increasing improbability, unexpectedness or uhpredictability (Tueting, Sutton, and Zubin, 1971;Squires, Hillyard, and Lindsay, 1973a;Donchin, Kubovy, Kutas, Johnson, and Herning, 1973;1,ilkinson and Ashby, 1973;Friedman, Hakerem, Sutton, and Fleiss, 1973;Squires, Squires, and Hillyard, 1974). Furthermore, it has been firmly established that a P3 component can aiSO belicited by infrequent omissions of an exp~ted stimulus from a repetitive sequence (Klinke, Fruhstorfer, and Finkenmeller, 1968;Barlow, 1969;Ruchkin and Sutton, 1973;Picton, Hillyard, and Galambos, 1974;Picton and Hillyard, 1974), thus suggesting that the relationship between P3 amplitude and event probability is similar whether the taskrelevant event is stimulus presence or stimulus absence.…”

High resolution images for 'Morphological and geographic definitions of the Sulawesian shrew rats Echiothrix leucura and E. centrosa (Muridae, Murinae), and description of a new species of sucking louse (Phthiraptera, Anoplura).' (Bulletin of the American Museum of Natural History, no. 391)

“…While some dietary components of Oxymycterus and Lophuromys overlap with those of Echiothrix, the former two enjoy a broader range of foods than the latter. Oxymycterus rufus (Suarez, 1994, reported as O. rutilans;Musser and Carleton [2005] explain why the name rufus should be used in place of rutilans) and O. nasutus (Barlow, 1969), for example, consume mainly insectsearthworms, snails, centipedes, plant tissues, and seeds are taken but comprise minor components of the diet. Lophuromys sikapusi, as reported by Dieterlen (2013b: 256) is:…”