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Search Results: 1 - 10 of 222679 matches for " Manuel Martín-Vivaldi "
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Armed Rollers: Does Nestling’s Vomit Function as a Defence against Predators?
Deseada Parejo, Jesús M. Avilés, Aránzazu Pe?a, Lourdes Sánchez, Francisca Ruano, Carmen Zamora-Mu?oz, Manuel Martín-Vivaldi
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0068862
Abstract: Chemical defences against predators are widespread in the animal kingdom although have been seldom reported in birds. Here, we investigate the possibility that the orange liquid that nestlings of an insectivorous bird, the Eurasian roller (Coracias garrulus), expel when scared at their nests acts as a chemical defence against predators. We studied the diet of nestling rollers and vomit origin, its chemical composition and deterrent effect on a mammal generalist predator. We also hypothesized that nestling rollers, as their main prey (i.e. grasshoppers) do from plants, could sequester chemicals from their prey for their use. Grasshoppers, that also regurgitate when facing to a threat, store the harmful substances used by plants to defend themselves against herbivores. We found that nestling rollers only vomit after being grasped and moved. The production of vomit depended on food consumption and the vomit contained two deterrent chemicals (hydroxycinnamic and hydroxybenzoic acids) stored by grasshoppers and used by plants to diminish herbivory, suggesting that they originate from the rollers’ prey. Finally, we showed for the first time that the oral secretion of a vertebrate had a deterrent effect on a model predator because vomit of nestling rollers made meat distasteful to dogs. These results support the idea that the vomit of nestling rollers is a chemical defence against predators.
Antimicrobial Activity and Genetic Profile of Enteroccoci Isolated from Hoopoes Uropygial Gland
Magdalena Ruiz-Rodríguez, Eva Valdivia, Manuel Martín-Vivaldi, Antonio M. Martín-Platero, Manuel Martínez-Bueno, María Méndez, Juan M. Peralta-Sánchez, Juan J. Soler
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0041843
Abstract: Symbiotic microorganisms may be directly transferred from parents to offspring or acquired from a particular environment that animals may be able to select. If benefits for hosts vary among microbial strains, natural selection may favour hosts holding the most beneficial one. Enterococci symbionts living in the hoopoe (Upupa epops) uropygial gland are able to synthesise bacteriocins (antimicrobial peptides that inhibit the growth of competitor bacteria). We explored variability in genetic profile (through RAPD-PCR analyses) and antimicrobial properties (by performing antagonistic tests against ten bacterial indicator strains) of the different isolates obtained from the uropygial glands of hoopoe females and nestlings. We found that the genetic profile of bacterial isolates was related to antimicrobial activity, as well as to individual host identity and the nest from which samples were obtained. This association suggest that variation in the inhibitory capacity of Enterococci symbionts should be under selection.
Peritonitis bacteriana espontánea por Listeria monocytogenes en paciente con cirrosis hepática Spontaneous bacterial peritonitis by Listeria monocytogenes in a patient with liver cirrhosis
L. Diego,J. Martín-Vivaldi,F. Ramírez,M. J. Soria
Revista Espa?ola de Enfermedades Digestivas , 2005,
Abstract:
Consulta de alta resolución de digestivo en Andalucía: ?qué es y cómo debe funcionar?
Herrerías Gutiérrez,J. M.; Argüelles Arias,F.; Martín Herrera,L.; Montero Domínguez,J. M.; Dios Vega,J. de; Martín-Vivaldi Martínez,R.; Domínguez Macías,A.; Maldonado Eloy-García,J.; Sánchez Cantos,A. M.; Romero Gómez,M.; Márquez Galán,J. L.;
Revista Espa?ola de Enfermedades Digestivas , 2008, DOI: 10.4321/S1130-01082008000100002
Abstract: introduction: the present concept in our healthcare system is that medical care should be given on an outpatient basis with hospitalization occurring only when essential. we therefore put forth the development of the "all in one" outpatient office or "high resolution" outpatient clinic. for such purpose we administered a questionnaire to various andalusian hospitals to define and determine those aspects necessary in the development of the aforementioned outpatient office. materials and methods: the questionnaire was filled out by 10 andalusian hospitals. this is a prospective-descriptive study of responses from all 10 participating hospitals. the 27 questions inquired on the existence of such an outpatient office and the infrastructure needed to develop this service: how many patients are seen, where is it physically located, where do patients come from, criteria for assigning patients to this medical office, condition of incoming patients, whether ultrasound scans are performed, whether an integrated hospital computer system exists, nursing staff, how many visits are required before coming to a diagnosis, and finally whether this type of outpatient office is needed, and if so, why. results: of all 10 hospitals, 5 of them had this type of clinic. all of them considered this type of outpatient service essential. the number of patients treated should be "10", in the hospital itself. there are differences as to whether patients should come from the emergency room or a primary care physician. it seems logical to assume that only patients who can be diagnosed via ultrasounds or endoscopy should be chosen. to allow an ultrasonogram the patient should visit the outpatient office in a state of "fasting" and with standard blood counts from the primary care physician. the outpatient clinic should have a computer system and its own nurse. according to participating hospitals this type of outpatient visits is very useful in our present healthcare system, as it allows higher lev
Results of a survey about specific inflammatory bowel disease units in Andalusia
Herrerías Gutiérrez,J. M.; Argüelles Arias,F.; Moreno Gallego,M.; Dios Vega,J. de; Martín-Vivaldi Martínez,R.; Domínguez Macías,A.; Sánchez Cantos,A. M.; Ferré álamo,A.; Manteca,R.; Vega Sáenz,J. L.; Romero Gómez,M.; Márquez Galán,J. L.;
Revista Espa?ola de Enfermedades Digestivas , 2009, DOI: 10.4321/S1130-01082009000300005
Abstract: background: inflammatory bowel disease (ibd) has become one of the most prevalent pathologies in gastroenterology units, which added to its clinical outcome, treatment, the complexity of affected patients and the need to be continuously updated for the correct management of the disease, have made essential the presence of specific ibd units in each hospital. objectives: the primary aims of this study were: a) to reveal the existence of these units in our area and how they work; and b) to draw conclusions regarding the necessary resources in these units and their aims. material and methods: in order to analyse the presence of these specialized units and the available resources in andalusian hospitals, a 24-question survey was designed, being answered by 11 hospitals. the evaluated questions included the number of days patients are attended and the number of physicians attending the unit, the number of available healthcare assistants, if emergencies are attended or not, if there is an activated telephone number for patient consultation, if a day care unit is available and if new treatments are easily accessible. results: a specific ibd unit is present in all studied hospitals attending more than 11 patients each, although in the 63.4% of the cases patients are not attended more than 3 days per week. on the other hand, the 81.8% of the included hospitals attend emergencies although only the 54.5% of them had a specific telephone number for patient attendance. conclusions: a specific ibd unit is present in many andalusian hospitals, although some deficiencies can be observed. the general opinion of this group is that these units are necessary in order to properly attend, monitorize and treat patients affected by ibd.
Rese a de "Mapa Geomorfológico de Sierra Nevada. Morfología glaciar y periglaciar" de Antonio Gómez Ortiz (coord.)
Maía Elena Martín Vivaldi Caballero
Cuadernos Geográficos , 2003,
Abstract:
La prevención en psiquiatría geriátrica: el momento del sentido común
Manuel Martín Carrasco
Revista Colombiana de Psiquiatría , 2009,
Abstract:
Los efectos sociales de la política inmigratoria
Manuel Martín Serrano
Política y Sociedad , 1993, DOI: -
Abstract: Sin resumen
Evaluación del estilo cognitivo ?Dependencia/independencia de campo? en el contexto de los problemas de ansiedad
Ramos Martín,Juan Manuel;
Clínica y Salud , 2006,
Abstract: simplicity, easiness and psychometric properties make the geft an attractive tool to assess field dependence. this tool has been used within the context of anxiety problems, where a relationship is observed with anxiety as a state but not as a trait. we used the geft along with the isra in a sample of 79 patients to check whether or not field dependence was a factor of vulnerability for anxiety. we also used it in a sample of 53 patients to check its impact on therapeutic progress. results show that field-dependent people have higher levels of anxiety (p=.018). field-independent people benefited more from treatment, specially their cognitive response system (p=.047). it is suggested to split the construct into sub-processes in order to achieve a better identification of mechanisms undergoing field-independent advantage to cope with anxiety.
?Qué significa ser buen padre?
Estalayo Martín,Luis Manuel;
Revista de la Asociación Espa?ola de Neuropsiquiatría , 2010, DOI: 10.4321/S0211-57352010000300005
Abstract: it's supported the need to consider the difference between the real, symbolic and imaginary parent that is described by psychoanalisis in the diagnostic evaluation of the "parental competency". the absence of these concepts can imply abrupt and shallow evaluations which are excessively focussed in phenomenological aspects.
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