Catalogue of the ectoparasitic insects of the bats of Argentina

Taxonomy and distribution of the ectoparasitic insects of bats from Argentina, are reviewed. Seventeen species of Diptera (six of Nycteribiidae and eleven of Streblidae), six species of Siphonaptera (four ofIschnopsyllidae, one of Pulicidae, and one ofStephanocircidae), and seven species of Hemiptera (Polyctenidae) are known presently for Argentina. The information was obtained by reviewing the literature and collecting in the field between 1989 and 1998. The specimens collected in the field were compared with the type material deposited at the Field Museum of Natural History (CHNM).En este primer catalogo de insectos ectoparasitos de murcielagos de la Argentina, se ofrece informacion sobre taxonomia y distribucion. Se conocen actualmente en el pais 17 especies de Diptera (seis de Nycteribiidae yonce de Streblidae), seis de Siphonaptera (cuatro de Ischnopsyllidae, una de Pulicidae y una de Stephanocircidae) y siete especies de Hemiptera (Polyctenidae). Se consulto numerosa literatura sobre los distintos grupos y se reviso abundante material obtenido en viajes de campana realizados desde 1989 a 1998, a numerosas localidades de la Argentina. Se realizaron comparaciones con material tipo del Field Museum of Natural History (CHNM)

La Formación de Bellmunt (Unidad del Cadí, Pirineo oriental): aportaciones bioestratigráficas de los sistemas lacustres y palustres asociados

The Bellmunt Fm is an alluvial synorogenic unit which was deposited under the influence of the southward displacement of succesive pyrenean nappes. This unit includes, in the boundary between its lower and middle part, many lacustrine and palustrine beds with an abundant fossil fauna and flora. This fossil record allows to recognize thepaleoenviromental andpaleoclimatic scenary. Charophytes and fossil mammals indicate a Middle and Lower Bartonian age for this Formation

Presencia de cetáceos frente a la Segunda Región de Chile = The presence of cetaceans off northern Chilean coast

Although some 35 species of cetaceans have been reported for chilean waters, the amount of published data remains very limited. Historical information on the cetofauna of northern Chile is next to inexistent. Presented here is a preliminary compilation of cetaceans recorded from sightings. strandings and by-catches, off the coast of the Second Region of Chile (210 27' S to 260 07' SI between 1980 and 1986. Evidence for the following species is available; Eubalaena australis, Balaenoptera acutorostrata, B, edeni and/or B. borealis. Phocoena spinipinnis, Delphinus delphis, Lagenorhynchus obscurus, Tursiops truncatus, Ussodelphis peronii, Globicephala melaena, G. macrorhynchus, Orcinus orca, Grampus griseus, Physeter macrocephalus. Twenty nine cetaceen specimens conserved at the Instituto de Investigaciones Oceanol6gicas (Universidad de Antofagasta) are listed. The urgent need for future systematical collection of specimens and sighting data in the study area is expressed

Detección de virus Chikungunya y Zika en animales: Revisión sistemática y meta-análisis

La primera descripción de muchas enfermedades arbovirales se produjo en primer lugar en animales, incluidos múltiples alfavirus y flavivirus, como el Chikungunya (CHIKV) y el Zika (ZIKV), respectivamente. Sin embargo, todavía faltan estudios que evalúen el papel de algunas especies como reservorio, especialmente después de las intensas epidemias que acontecieron en las Américas desde 2014. Objetivo: Reconocer potenciales reservorios animales de los virus del Chikungunya y Zika. Materiales y métodos

Predicting the current distribution of the chacoan peccary (catagonus wagneri) in the gran Chaco

The Chacoan peccary (Catagonus wagneri), or Tagua, an endemic species living in the Chaco eco¬region, is endangered by highly increasing deforestation rates across the region, particularly in the last decade. This situation highlights the need to better understand the current distribution of the species, as well as how environmental conditions affect habitat suitability. This study predicts the distribution of the Chacoan peccary and evaluates the current environmental conditions in the Chaco for this species. Using six environmental variables and 177 confirmed occurrence records (from 2000 to 2015) provided by researchers, we developed a Species Distribution Model (SDM) applying the Maxent algorithm. The final model was highly accurate and significant (p < 0.001; AUC 0.860 ± 0.0268; omission error 1.82 %; post¬hoc validation of omission error using independent presence¬only records 1.33 %), predicting that 46.24 % of the Chaco is suitable habitat for the Chacoan peccary, with the most important areas concentrated in the middle of Paraguay and northern Argentina. Land cover, isothermality and elevation were the variables that better explained the habitat suitability for the Chacoan peccary. Despite some portions of suitable areas occurring inside protected areas, the borders and the central portions of suitable areas have recently suffered from intensive deforestation and development, and most of the highly suitable areas for the species are not under protection. The results provide fundamental insights for the establishment of priority Chacoan peccary conservation areas within its rangeFil: Paschoaletto Micchi, Katia Maria. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil. Conservation Breeding Specialist Group Brazilian network; BrasilFil: Silva Angelieri, Cintia Camila. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; BrasilFil: Altrichter, Mariana. Prescott College; Estados UnidosFil: Desbiez, Arnaud. Royal Zoological Society of Scotland. Edimburgo; Reino Unido. Conservation Breeding Specialist Group Brazilian network; BrasilFil: Yanosky, Alberto. Asociación Guyra Paraguay. Asunción; ParaguayFil: Campos Krauer, Juan Manuel. Centro Chaqueño para la Conservación y la Investigación; ParaguayFil: Torres, Ricardo Jose. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Camino, Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaFil: Cabral, Hugo. Asociación Guyra Paraguay. Asunción; ParaguayFil: Cartés, José. Asociación Guyra Paraguay. Asunción; ParaguayFil: Cuellar, Rosa Leny. Fundación Kaa Iya; BoliviaFil: Gallegos, Marcelo. Secretaría de Ambiente de la Provincia de Salta. Programa Guardaparques; ArgentinaFil: Giordano, Anthony J.. No especifica;Fil: Decarre, Julieta. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Recursos Biológicos; ArgentinaFil: Maffei, Leonardo. Wildlife Conservation Society. Lima; PerúFil: Neris, Nora. Universidad Nacional de Asunción; ParaguayFil: Saldivar Bellassai, Silvia. Itaipu Binacional; ParaguayFil: Wallace, Robert. Wildlife Conservation Society. New York; Estados UnidosFil: Lizarraga, Leónidas. Delegación Regional Noroeste. Sistema de Información de Biodiversidad de la Administración de Parques Nacionales. Salta; ArgentinaFil: Thompson, Jeffrey. Universidad Nacional de Asunción; ParaguayFil: Velilla, Mariela. Universidad Nacional de Asunción; Paragua

Sobre la edad oligocénica inferior del yacimiento de Sanpedor (Cuenca del Ebro, provincia de Barcelona)

Un muestreo intensivo del clasico yacimiento de mamíferos fósiles de Santpedor ha dado como resultado la presencia de Theridomys aff. aquatilis, Gliravus aff. priscus, Eucricetodon atavus y Pseudoltinomys gaillardi. Esta asociación permite atribuir los niveles de yacimiento  al Oligoceno inferior mas bajo (nivel de Hoogbutsel)

Inseticidas piretróides no controle de pragas.

A piretrina, uma mistura crua de piretróides naturais é, talvez, o mais antigo dos inseticidas e, 135 anos após a sua introdução, tem ainda deslocado muitos de seus novos competidores, especialmente em uso doméstico devido a sua baixa toxidade para mamiferos. A forma mais comum nas quais os piretróides naturais são usados é como extrato de piretro, obtido por tração das flores por meio de solventes,como o metanol e a acetona, obtendo-se uma solução de piretróides,ceras e pigmentos, que serão separados.bitstream/item/55157/1/DOC-01-0001.pd