Las garrapatas de Uruguay : especies, hospedadores, distribución e importancia sanitaria

Se presenta una actualización de las especies de garrapatas de Uruguay. La lista comprende 31 especies que se clasificaron en las siguientes categorías: residentes (15 especies); probablemente residentes (3 especies); accidentales (1 especie); a confirmar (4 especies); diagnóstico erróneo (6 especies) y mención incorrecta (2 especies). Se indica la nueva posición sistemática de algunas especies, así como las sinonimias más relevantes, hospedadoras y distribución de las mismas en el país. Entre las especies de importancia sanitaria, Boophilus microplus continúa siendo la única especie con repercusión en la ganadería de nuestro país, en tanto que, con respecto a la salud humana, se ha detectado que Amblyomma triste es la especie de mayor importancia. Esta es la única especie incriminada en la transmisión de rickettsias al humano en Uruguay. Otras especies como Ornithodoros talaje, Ixodes pararicinus y Rhipicephalus sanguineys se identificaron como vectores potenciales de enfermedades para los animales y los humanos en Uruguay. Factores tales como el ingreso de animales portadores de microorganismos transmisibles por esas especies de garrapatas, cambios ecológicos y climáticos, y la colonización humana de ciertas áreas del país, pueden favorecer que tal riesgo potencial se transforme en real.The Iist of Uruguay tick species is actualized. The 31 Iisted specis were cIassified in the following categories: residents (15 species), probably residents (3) accidentals (1), to confirm (4), erroneous diagnosis (6), and mistaken records (2 species). The new systematic status of some species is clarified, and the more outstanding synonymies, the host and the geographical distribution within Uruguay are indicated. As regards the sanitary impact, Boophilu microplus is still the only species with economic significance to livestock whereas for human health Amblyomma triste is the most important species because is the only one involved with rickettsia's transmission in our country. Several other species, such a Ornithodoros talaje, lxodes pararicinus and Rhipicephalus sanguineus were identified as potential vector of diseases to animal and human. Factor as the introduction of transmissible microorganisms with carrier animals, ecological and climatic change and the human colonization of certain zone of the country, may occasione that this risk becomes a reality.EEA RafaelaFil: Venzal, José Manuel. Universidad de la República. CENUR Litoral Norte-Salto. Facultad de Veterinaria. Departamento de Parasitología; UruguayFil: Castro, Oscar. Universidad de la República. Facultad de Veterinaria. Departamento de Parasitología Veterinaria; UruguayFil: Cabrera, P.A. Universidad de la República. Facultad de Veterinaria. Departamento de Parasitología Veterinaria; UruguayFil: Souza, C.G. de. Universidad de la República. Facultad de Veterinaria. Departamento de Parasitología Veterinaria; UruguayFil: Guglielmone, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentin

Sub-terahertz, microwaves and high energy emissions during the December 6, 2006 flare, at 18:40 UT

The presence of a solar burst spectral component with flux density increasing with frequency in the sub-terahertz range, spectrally separated from the well-known microwave spectral component, bring new possibilities to explore the flaring physical processes, both observational and theoretical. The solar event of 6 December 2006, starting at about 18:30 UT, exhibited a particularly well-defined double spectral structure, with the sub-THz spectral component detected at 212 and 405 GHz by SST and microwaves (1-18 GHz) observed by the Owens Valley Solar Array (OVSA). Emissions obtained by instruments in satellites are discussed with emphasis to ultra-violet (UV) obtained by the Transition Region And Coronal Explorer (TRACE), soft X-rays from the Geostationary Operational Environmental Satellites (GOES) and X- and gamma-rays from the Ramaty High Energy Solar Spectroscopic Imager (RHESSI). The sub-THz impulsive component had its closer temporal counterpart only in the higher energy X- and gamma-rays ranges. The spatial positions of the centers of emission at 212 GHz for the first flux enhancement were clearly displaced by more than one arc-minute from positions at the following phases. The observed sub-THz fluxes and burst source plasma parameters were found difficult to be reconciled to a purely thermal emission component. We discuss possible mechanisms to explain the double spectral components at microwaves and in the THz ranges.Comment: Accepted version for publication in Solar Physic

Instantons in N=1/2 Super Yang-Mills Theory via Deformed Super ADHM Construction

We study an extension of the ADHM construction to give deformed anti-self-dual (ASD) instantons in N=1/2 super Yang-Mills theory with U(n) gauge group. First we extend the exterior algebra on superspace to non(anti)commutative superspace and show that the N=1/2 super Yang-Mills theory can be reformulated in a geometrical way. By using this exterior algebra, we formulate a non(anti)commutative version of the super ADHM construction and show that the curvature two-form superfields obtained by our construction do satisfy the deformed ASD equations and thus we establish the deformed super ADHM construction. We also show that the known deformed U(2) one instanton solution is obtained by this construction.Comment: 32 pages, LaTeX, v2: typos corrected, references adde

Aspergillus fumigatus MADS-Box Transcription Factor rlmA Is Required for Regulation of the Cell Wall Integrity and Virulence

Microbial Biotechnolog

Azimuthal anisotropy at RHIC: the first and fourth harmonics

We report the first observations of the first harmonic (directed flow, v_1), and the fourth harmonic (v_4), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC). Both measurements were done taking advantage of the large elliptic flow (v_2) generated at RHIC. From the correlation of v_2 with v_1 it is determined that v_2 is positive, or {\it in-plane}. The integrated v_4 is about a factor of 10 smaller than v_2. For the sixth (v_6) and eighth (v_8) harmonics upper limits on the magnitudes are reported.Comment: 6 pages with 3 figures, as accepted for Phys. Rev. Letters The data tables are at http://www.star.bnl.gov/central/publications/pubDetail.php?id=3