Captura de un paiño de swinhoe Oceanodroma monorgis en el islote de ses Bledes, Cabrera

Paíño de Swinhoe Oceanodroma monorhis capturado y anillado en el islote de Ses Bledes, archipiélago de Cabrera, en agosto de 1997. Esta especie tiene su área de nidificación en el mar de Japón y en el mar de la China, y durante la dispersión postnupcial las aves se dirigen hacia el océano Indico. Hay más de 10 registros de capturas en el Paleártico Occidental, y el ejemplar de Ses Bledes es tercero para el mediterráneo. Se presenta una descripción detallada del individuo capturado y se indican los principales rasgoS morfológicos y biométricos que permitieron la identificación.Petrell de Swinhoe Oceanodroma monorhis capturat i anellat a l'illot de ses Bledes, arxipièlag de Cabrera, l'agost de 1997. Aquesta espècie té la seva àrea de nifificació al mar del Japó i al mar de la Xina, i durant la dispersió postnupcial les aus es dirigeixen cap a l'oceà Índic. Hi ha més de 10 registres de captures al Paleàrtic occidental. L'exemplar de ses Bledes és el tercer al Mediterrani. Se'n presenta una descripció detallada i se n'indiquen els principals trets morfològics i biomètrics que en permeteren la identificació.A Swinhoe's Storm-petrel Oceanodroma monorhis caught on the islet of Ses Bledes, Cabrera. A winhoe's Storm-petrel Oceanograma monorhis was caught and ringed on the islet of Ses Bledes, Cabrera Archipielago (Balearic Islands) in the early morning of 13th August 1997. This species breeds in the Sea of Japan and China and during postbreeding dispersal move to the Indian Ocean. There are more than 10 captures in the Western Palearctic and the specimen caught on Ses Bledes in the third for the Mediterranean. A detailed description of the bird is given, including morphological characteristics and biometrics, which permitted specific identification

Low Dose Aerosol Fitness at the Innate Phase of Murine Infection Better Predicts Virulence amongst Clinical Strains of Mycobacterium tuberculosis

Background: Evaluation of a quick and easy model to determine the intrinsic ability of clinical strains to generate active TB has been set by assuming that this is linked to the fitness of Mycobacterium tuberculosis strain at the innate phase of the infection. Thus, the higher the bacillary load, the greater the possibility of inducting liquefaction, and thus active TB, once the adaptive response is set. Methodology/Principal Findings: The virulence of seven clinical Mycobacterium tuberculosis strains isolated in Spain was tested by determining the bacillary concentration in the spleen and lung of mice at weeks 0, 1 and 2 after intravenous (IV) inoculation of 10 4 CFU, and by determining the growth in vitro until the stationary phase had been reached. Cord distribution automated analysis showed two clear patterns related to the high and low fitness in the lung after IV infection. This pattern was not seen in the in vitro fitness tests, which clearly favored the reference strain (H37Rv). Subsequent determination using a more physiological low-dose aerosol (AER) inoculation with 10 2 CFU showed a third pattern in which the three best values coincided with the highest dissemination capacity according to epidemiological data. Conclusions/Significance: The fitness obtained after low dose aerosol administration in the presence of the innate immune response is the most predictive factor for determining the virulence of clinical strains. This gives support to a mechanism o

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements