Mariano Sanchez

Seasonal patterns in the diet of frugivorous bats in the subtropical rainforests of Argentina

Abstract The principal goal of our research is to evaluate the dietary variation of the frugivorous bats in two contrasting subtropical rainforests in Argentina (montane rainforest in the NW with a strong seasonality and lowland rainforest in the NE with a mild seasonality). Diet was estimated on the basis of over 1000 dietary records collected along two seasonal annual cycles. Our results indicated that the dominant frugivorous bats exhibit a marked seasonality in the use of fruit resources and that some plants represent keystone resources in periods of general food scarcity. The NW bat ensemble response to fruit phenology was a strong decrease in the capture rate toward the end of the dry season. The NE bat ensemble did not show the same seasonal pattern, and we hypothesize that other variables are probably more important to determine bat abundance. Diet of bats varied in response to spatial changes in the availability of their preferred fruits. For instance, the use of Solanum, Piper, and other fruits by Sturnira bats appeared to be coupled with patterns of diversity and density of these resources.

Mammalia, Chiroptera Blumenbach, 1779: new locality records, filling gaps, and geographic distribution maps from northern Argentina

We report new records for 254 specimens of 19 species of bats from 15 genera and three of the four families of Argentine bats (Phyllostomidae, Vespertilionidae, and Molossidae). Sixty one new distributional records were also added to eight provinces of Argentina and to the Puna, Monte of mountains and valleys, Yungas forests, Dry and Humid Chaco, Pampas, Fields and Weedlands, and Paranean forests ecoregions. We add only one new bat species to an ecoregion: the first report of Promops nasutus for the Monte of mountains and valleys

New records of bat ectoparasites (Diptera, Hemiptera and Siphonaptera) from northern Argentina

New species of bat-ectoparasite insects are added to the fauna of Argentina and distributional limits are extended for others, based on information obtained from 21 species of bats collected. New data is reported for the distribution of 23 species of bat ectoparasites, of which 17 belong to the Order Diptera [14 Streblidae: Anastrebla caudiferae Wenzel, Anatrichobius scorzai Wenzel, Aspidoptera phyllostomatis (Perty), Megistopoda aranea (Coquillett), M. proxima (Sèguy), Metelasmus pseudopterus Coquillett, Noctiliostrebla aitkeni Wenzel, N. dubia (Rudow), Paradyschiria fusca Speiser, Paradyschiria sp., Strebla chrotopteri Wenzel, Strebla diaemi Wenzel, Trichobius parasiticus Gervais y Xenotrichobius noctilionis Wenzel, and three Nycteribiidae: Basilia carteri Scott, B. plaumanni Scott y B.neamericana Schuurmans Stekhoven (Jr)], three belong to the Order Siphonaptera [one Ischnopsyllidae: Myodopsylla isidori (Weyenbergh), one Tungidae: Rhynchopsyllus pulex Haller, and one Stephanocircidae: Craneopsylla m. minerva (Rothschild)] and three belong to Order Hemiptera [two Polyctenidae: Hesperoctenes fumarius (Westwood) and H. vicinus Jordan, and one Cimicidae: Latrocimex spectans Lent]. Some records are new for Argentina, while others are new for the provinces of Corrientes, Chaco, Entre Ríos, Jujuy, Misiones and Salta. Also new host-parasite relationships are reported.

LIDI Multi Robot Environment: Support software for concurrency learning in CS1

An interactive visual environment for teaching the concepts of concurrence and parallelism in an introductory course to algorithms is presented. The Lidi MultiRobot Environment (LMRE) is an evolution of the Visual Da Vinci environment that is extensively used in the introductory course to programming in several universities in Argentina.