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First Description of Shigella sonnei Harboring bla <sub>CTX-M-55 </sub>Outside Asia
( Jeannete Zurita ),( David Ortega-paredes ),( Pedro Barba ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.12
Shigella sonnei harboring bla <sub>CTX-M-55</sub> was isolated outside of Asia for the first time. The bla <sub>CTX-M-55</sub> gene was found to be downstream of ISEcp-1 and located in a ~130 kb conjugative plasmid belonging to the I1 incompatibility group. The strain was recovered from a 7-year-old Ecuadorian girl with watery diarrhea who had not travelled abroad. Recent local data describe the emergence of bla <sub>CTX-M-55 </sub>and other variants typically found in Asia in the Andean Region, suggesting that increased travel of humans and trade relationships with Asian countries are influencing the current Ecuadorian bacterial resistance situation.
Dinh T. Nguyen,Jesús Gómez-Zurita 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.1
A local survey of Chrysomelidae in a coastal area of some 10 km2 in the Núi Chúa National Park (Ninh Thuan, S Vietnam) yielded a remarkable number of Galerucinae. Most of them, up to 18 species, could be ascribed to the informal group Monoleptites, i.e. galerucines with very long first metatarsomere, longer than the remaining four combined. These representatives ofMonoleptites constitute a strongly supportedmonophyletic group based on a combined analysis of one mtDNA (cox1) and one nuclear (wnt) marker, and include up to thirteen species which are not recognisable as species previously described or reported fromVietnamor neighbouring countries. These species are described herein, including eleven species tentatively assigned to the genus Monolepta Chevrolat (M. decreta sp. nov., M. deminuta sp. nov., M. densopunctata sp. nov., M. dubia sp. nov., M. fluctuans sp. nov., M. fuscicorne sp. nov., M. interruptomarginata sp. nov., M. ochracea sp. nov., M. praetexta sp. nov., M. quotidiana sp. nov. and M. thomaswagneri sp. nov.) and two to the genus Paleosepharia Laboissière (P. frontis sp. nov. and P. nuichua sp. nov.). Moreover, the name Desbordelepta nom. nov. is proposed to remove the homonymy of Desbordesius Laboissière, 1936 nec Maindron, 1906, and the spermatheca of D. picea (Kimoto) andmale and female genitalia of M. dalatica Kimoto and M. semicostata Kimoto are described for the first time. Finally, a molecular analysis of putative diets based on the identification of chloroplastic psbA-trnH sequences obtained from total DNA extractions of the beetles, provides with some robust hypotheses for the diet of these animals, showing that they are polyphagous, and able to utilise a wide range of mainly eudicots in their environment. The results of this study roughly represent a 12% increase in the number of known species of the Monoleptites group in Vietnam and highlight the need for a profound revision of generic attributes in this group.
A STUDY OF THE PHOTOMETRIC VARIABILITY OF THE PECULIAR MAGNETIC WHITE DWARF WD 1953-011
Valyavin, G.,Antonyuk, K.,Plachinda, S.,Clark, D. M.,Wade, G. A.,Machado, Lester Fox,Alvarez, M.,Lopez, J. M.,Hiriart, D.,Han, Inwoo,Jeon, Young-Beom,Bagnulo, S.,Zharikov, S. V.,Zurita, C.,Mujica, R. IOP Publishing 2011 The Astrophysical journal Vol.734 No.1
<P>We present and interpret simultaneous new photometric and spectroscopic observations of the peculiar magnetic white dwarf WD 1953-011. The flux in the V-band filter and intensity of the Balmer spectral lines demonstrate variability with the rotation period of about 1.45 days. According to previous studies, this variability can be explained by the presence of a dark spot having a magnetic nature, analogous to a sunspot. Motivated by this idea, we examine possible physical relationships between the suggested dark spot and the strong-field magnetic structure (magnetic 'spot' or 'tube') recently identified on the surface of this star. Comparing the rotationally modulated flux with the variable spectral observables related to the magnetic 'spot,' we establish their correlation and therefore their physical relationship. Modeling the variable photometric flux assuming that it is associated with temperature variations in the stellar photosphere, we argue that the strong-field area and dark, low-temperature spot are comparable in size and located at the same latitudes, essentially overlapping each other with a possible slight longitudinal shift. In this paper, we also present a new, improved value of the star's rotational period and constrain the characteristics of the thermal inhomogeneity over the degenerate's surface.</P>