{"id":16775,"date":"2002-08-05T00:00:00","date_gmt":"2002-08-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/variacion-genetica-y-morfologica-en-poblaciones-naturales-de-hemiuridos-marinos-digenea\/"},"modified":"2002-08-05T00:00:00","modified_gmt":"2002-08-05T00:00:00","slug":"variacion-genetica-y-morfologica-en-poblaciones-naturales-de-hemiuridos-marinos-digenea","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/zoologia\/variacion-genetica-y-morfologica-en-poblaciones-naturales-de-hemiuridos-marinos-digenea\/","title":{"rendered":"Variaci\u00f3n gen\u00e9tica y morfol\u00f3gica en poblaciones naturales de hemi\u00faridos marinos (digenea)"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Rom\u00e1n Vilas Peteiro <\/strong><\/h2>\n<p>Las poblaciones de helmintos endopar\u00e1sitos se caracterizan por altas tareas reproductivas que muchas veces son el resultado de mecanismos de reproducci\u00f3n clonal y autofecundaci\u00f3n generalizada. La g\u00e9nesis de una progenie muy numerosa en un breve espacio de tiempo, junto con la dispersi\u00f3n de su fuente de recursos, la poblaci\u00f3n hospedadora, favorecen la existencia de grandes fluctuaciones demogr\u00e1ficas en las poblaciones del par\u00e1sito. factores tales como la reproducci\u00f3n asexual, la inestabilidad demogr\u00e1fica de la poblaci\u00f3n y una estructura reproductiva muy influenciada por la fragmentaci\u00f3n del h\u00e1bitat, que es inherente al parasitismo, deber\u00edan dar lugar a tama\u00f1os de poblaci\u00f3n eficaces relativamente bajos y, por consiguiente, estar sometidas a fuertes efectos de deriva gen\u00e9tica. En estas condiciones son previsibles poblaciones gen\u00e9ticamente homog\u00e9neas, aunque considerablemente distanciadas desde el punto de vista gen\u00e9tico, incluso a una escala microespacial, siempre que pueda presuponerse un flujo g\u00e9nico interpoblacional escaso, lo cual es algo admisible para muchos par\u00e1sitos porque muestran pocas posibilidades de dispersi\u00f3n.  sin embargo, la complejidad de ciclos vitales y la diversidad ecol\u00f3gica de los helmintos par\u00e1sitos, podr\u00edan explicar una mayor variedad de estructuras gen\u00e9tico-poblacionales. En este trabajo se estudia la forma en que el ciclo heteroxeno de un trematodo par\u00e1sito de tele\u00f3steos marinos (conger conger y anguilla anguilla) afecta a la distribuci\u00f3n espacio-temporal de la variabilidad gen\u00e9tica de la poblaci\u00f3n parasitaria. Concretamente se ha analizado el efecto homogeneizante de una eventual participaci\u00f3n de hospedadores parat\u00e9nicos. para ello se ha estudiado mediante marcadores aloz\u00edmicos por electroforesis en gel de almid\u00f3n la variaci\u00f3n gen\u00e9tica de 7 poblaciones de tres especies del g\u00e9nero lecithochirium, as\u00ed como de 12 infrapoblaciones de la especie l.Fusiforme. Se ha extendido el estu<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Variaci\u00f3n gen\u00e9tica y morfol\u00f3gica en poblaciones naturales de hemi\u00faridos marinos (digenea)<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Variaci\u00f3n gen\u00e9tica y morfol\u00f3gica en poblaciones naturales de hemi\u00faridos marinos (digenea) <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Rom\u00e1n Vilas Peteiro <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 08\/05\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Esperanza Paniagua Crespo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Mart\u00ednez ubeira florencio cesar <\/li>\n<li>Carlos Feliu jose (vocal)<\/li>\n<li>diego Carlos Guevara benitez (vocal)<\/li>\n<li>cristina Cutillas barrios (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Rom\u00e1n Vilas Peteiro Las poblaciones de helmintos endopar\u00e1sitos se caracterizan por altas tareas reproductivas que muchas veces [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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