Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/45232
Title: The inner galactic structure traced by molecular clouds associated with ultra-compact hii regions
Author: Moya-Raygoza, G.
Palomera-Avalos, V.
Chacon-Torres, N.M.
Becerra-Chiron, I.M.
Issue Date: 2006
Abstract: Homopteran vectors (e.g., leafhoppers) of plant pathogens are vessels for reproduction of cell wall-free bacteria. These vectors also serve as hosts for larval parasitoid dipterans, hymenopterans, and strepsipterans. However, no study has explored the relationship among these wall-free bacteria and parasitoid larvae within the insect host. We studied the corn stunt spiroplasma (CSS), Spiroplasma kunkelii Whitcomb (Mycoplasmatales: Spiroplasmataceae), a bacterium that originated from secondary symbionts that cause corn stunt disease in maize, Zea mays L., and its reproduction in the haemolymph of the corn leafhopper, Dalbulus maidis (Delong and Wolcott) (Homoptera: Cicadellidae). We also studied the dryinid parasitoid Gonatopus bartletti Olmi (Hymenoptera: Dryinidae), the larva of which feeds in the corn leafhopper haemolymph. Our results showed that when CSS and the wasp coexisted in D. maidis, the development of the parasitoid was not affected by S. kunkelii. Parasitoid development was successfully completed when leafhoppers acquired S. kunkelii before or after parasitism and when CSS had median (10 days) and long (20 days) incubation periods in the leafhopper before parasitization. The presence of S. kunkelii did not affect parasitoid development to the adult stage. However, polymerase chain reaction showed that the presence (survival) of S. kunkelii in the leafhopper was negatively affected by the parasitoid larva. Fewer leafhoppers had CSS before and after parasitization compared with leafhoppers that only acquired the CSS. This negative effect helps to explain the high parasitism rate by G. bartletti in D. maidis and the low presence of S. kunkelii in the corn leafhopper when CSS and the wasp parasitoid overlap throughout their geographic distribution. The parasitoid larva may negatively affect S. kunkelii by (1) producing antibacterial peptides that are toxic to CSS; (2) producing teratocytes that take nutrients from the host for larval development, but these nutrients are required by CSS; (3) affecting, indirectly, CSS through other symbiotic microorganisms; and (4) producing proteins with antibacterial activity that are present in the venom of the wasp parasitoid. " 2006 The Netherlands Entomological Society.",,,,,,"10.1111/j.1570-7458.2006.00409.x",,,"http://hdl.handle.net/20.500.12104/45232","http://www.scopus.com/inward/record.url?eid=2-s2.0-33646698846&partnerID=40&md5=8e64e1a1ce3836fa5763a2b432801548",,,,,,"3",,"Entomologia Experimentalis et Applicata",,"189
196",,"119",,"Scopus
WOS",,,,,,"Bacterium parasitoid interaction; Cicadellidae; Corn stunt disease; Dryinidae; Homoptera; Hymenoptera; Maize; Secondary symbionts",,,,,,"The parasitoid Gonatopus bartletti reduces presence of plant-pathogenic Spiroplasma kunkelii within the leafhopper vector Dalbulus maidis",,"Article" "46961","123456789/35008",,"Agraz, F.P., Centro de Estudios Especializados, FOCUS Salud México, Mexico, Universidad Iberoamericana, Mexico; García, R.R., Centro de Estudios Especializados, FOCUS Salud México, Mexico, Universidad Iberoamericana, Mexico, Universidad de Guadalajara, Mexico, C. S. J. de los Lagos No. 97, Tlalnepantla de Baz, CP 54020, Estado de Mexico, Mexico; Hernández, R.I.G., Universidad de Guadalajara, Mexico; Rodríguez, B.B., Hospitales Civiles de Guadalajara, Mexico",,"Agraz, F.P.
García, R.R.
Hernandez, R.I.G.
Rodriguez, B.B.",,"2007",,"Suicide attempts and suicides are fifty times more frequent at psychiatric hospitals. The aim of this work was to evaluate the impact of a lethal suicide attempt on both mental health professionals and patients attending a psychiatric centre. An opportunity study was made by means of opinion questionnaires, a brief suicide risk evaluation, and with both Beck's suicide ideation and hopelessness scales. Results show that mental health professionals informed a medium training level to cope with this kind of events; those who observed a suicide attempt were more affected personally than those who did not; and their main needs were related to job security and a specific training to act when a suicide attempt occurs. Although patients showed a significant improvement fifteen days later, a clinical and statistical increase of hopelessness was also reported (7.3+5.74 vs. 14.88+2.26; t=4.20, gl=8, p=.003). We can conclude that work organization plays a crucial role in the impact of suicide attempts, which is usually negative and affects both patients and mental health professionals.",,,,,,,,,"http://hdl.handle.net/20.500.12104/45182","http://www.scopus.com/inward/record.url?eid=2-s2.0-38049100804&partnerID=40&md5=292533a4c2e38bb228d7253ca5eb2228",,,,,,"3",,"Psicologia Conductual",,"543
556",,"15",,"Scopus
WOS",,,,,,"Crisis intervention; Mental health services; Psychological impact; Suicide",,,,,,"The impact of patient suicide on psychiatric unit teams [La crisis de una unidad médico psiquiátrica ante un intento suicida]",,"Article" "46945","123456789/35008",,"Hernández Castañeda, R., Centro Universitario de los Valles, Universidad de Guadalajara, Carretera Ameca-Guadalajara Km 45.5, 46600 Ameca, Jalisco, Mexico",,"Hernandez Castaneda, R.",,"2008",,"This article is a qualitative case study describing the experience of Angélica an international graduate student from Latin America, who received her doctorate at the University of New Mexico in the United States. Her case demonstrated how administrators and faculty learn about the experience and struggles endured by international students, especially those who learned English a short time before admission to graduate studies. While a single case is understandably idiographic in nature and inevitably requires a larger sample, from the analysis of Angélica's case and the analysis of the relevant literature common topics emerged persuading me to conclude that the issues that commonly impact the life of international students have to do with: 1) second language problems; 2) the quality of academic advisement received; 3) the availability of financial support; 4) the level of integration into their academic program; and 5) the level of cultural adjustment in their host country.",,,,,,,,,"http://hdl.handle.net/20.500.12104/45166","http://www.scopus.com/inward/record.url?eid=2-s2.0-56649118831&partnerID=40&md5=21979846debb16e02d1a736c1df5b31c",,,,,,"2",,"Revista Electronica de Investigacion Educativa",,"1
16",,"10",,"Scopus
ScIELO",,,,"Education & Educational Research",,"Educational counseling; Financial support; Foreign student; Second languages; Student adjustment",,"Estudiantes extranjeros; segundo idioma; asesoramiento académico; adaptación del estudiante; apoyo financiero",,,,"The graduate experience: Living and studying abroad (A case study)",,"Article" "46968","123456789/35008",,"Luna, A., Instituto Nacional de Astrofísica, óptica y Electrónica, Apdo. Postal 51 y 216, Tonantzintla, Puebla, Mexico; Ortega, M.L., Instituto de Astronomía y Meteorología, Dpto. Física, Universidad de Guadalajara, Mexico; De La Fuente, E., Colegio de Educación Profesional Técnica, CONALEP-Chipilo, Km 15.5, Carretera Federal Puebla-Atlixco, Mexico",,"Luna, A.
Ortega, M.L.
De La Fuente, E.",,"2008",,"We are testing a method to solve for the distances of a sample of ultra-compact (UC) HII regions with IRAS colors and CS(J=2-1) detection. The ambiguity in their kinematical distances is solved using Monte-Carlo simulations. We simulated heliocentric longitude-Radius (l-R) on Galactic plane distributions, and their respective longitude-VelocityLSR (l-VLSR) projections using synthetic associated molecular clouds. The best Galactic distribution is selected by comparison with observed CO maps. Preliminary results for the Galactic quadrant IV are presented. " 2008: Instituto de Astronomía.
URI: http://hdl.handle.net/20.500.12104/45189
http://www.scopus.com/inward/record.url?eid=2-s2.0-70649111471&partnerID=40&md5=15bf1d38a578272e90c349bfaa89e3ff
Appears in Collections:Producción científica UdeG

Files in This Item:
There are no files associated with this item.


Items in RIUdeG are protected by copyright, with all rights reserved, unless otherwise indicated.