{"id":96775,"date":"2018-03-11T10:17:08","date_gmt":"2018-03-11T10:17:08","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/biogeografa%c2%ada-ecologa%c2%ada-y-estado-de-conservacion-de-las-va%c2%adboras-ibericas-v-aspis-v-latastei-y-v-seoanei-en-una-zona-de-contacto-en-el-norte-peninsular\/"},"modified":"2018-03-11T10:17:08","modified_gmt":"2018-03-11T10:17:08","slug":"biogeografa%c2%ada-ecologa%c2%ada-y-estado-de-conservacion-de-las-va%c2%adboras-ibericas-v-aspis-v-latastei-y-v-seoanei-en-una-zona-de-contacto-en-el-norte-peninsular","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/taxonomia-animal\/biogeografa%c2%ada-ecologa%c2%ada-y-estado-de-conservacion-de-las-va%c2%adboras-ibericas-v-aspis-v-latastei-y-v-seoanei-en-una-zona-de-contacto-en-el-norte-peninsular\/","title":{"rendered":"Biogeograf\u00eda, ecolog\u00eda y estado de conservaci\u00f3n de las v\u00edboras ib\u00e9ricas (v. aspis, v. latastei y v. seoanei) en una zona de contacto en el norte peninsular"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Fernando Martinez Freiria <\/strong><\/h2>\n<p>El objetivo de esta tesis doctoral fue estudiar la influencia de los factores ambientales y ecol\u00f3gicos en el mantenimiento de la \u00fanica zona de contacto conocida (el alto ebro) entre las tres especies de v\u00edboras ib\u00e9ricas (vipera aspis, v. Latastei y v. Seoanei). se determin\u00f3 la distribuci\u00f3n local, la selecci\u00f3n de h\u00e1bitats y la variaci\u00f3n en la frecuencia de alelos de las tres especies; la variaci\u00f3n geogr\u00e1fica en la morfolog\u00eda y su relaci\u00f3n con factores ambientales, los rasgos ecol\u00f3gicos y termorregulativos de las especies en coexistencia. las tres especies se distribuyen alop\u00e1tricamente pero el par mediterr\u00e1neo aspis-latastei contacta en una zona de simpatr\u00eda, con espec\u00edmenes morfol\u00f3gicamente intermedios. Esta \u00e1rea de transici\u00f3n medioambiental es una zona de integraci\u00f3n morfol\u00f3gica entre aspis-latastei, donde la variabilidad morfol\u00f3gica est\u00e1 correlacionada con variables clim\u00e1ticas. Existe flujo gen\u00e9tico entre las dos especies y los ejemplares intermedios son h\u00edbridos. H\u00edbridos y parentales tienen nichos ecol\u00f3gicos similares, lo que lleva a un alto solapamiento del \u00e1rea de potencial distribuci\u00f3n de los primeros y de simpatr\u00eda de los segundos.  las dos especies e h\u00edbridos coexisten bajo un escenario de elevada competencia interespec\u00edfica con segregaci\u00f3n de nicho espacial y temporal, donde v. Latastei parece tener ventajas reproductivas y los h\u00edbridos demogr\u00e1ficas. La eficacia reproductora de los h\u00edbridos es intermedia entre los parentales, sugiriendo la ocurrencia de selecci\u00f3n end\u00f3gena.  la zona de simpatr\u00eda es una zona de transici\u00f3n de las condiciones t\u00e9rmicas, demasiado c\u00e1lida para v. Aspis y fr\u00eda para v. Latastei. Los h\u00edbridos son m\u00e1s term\u00f3filos y usan h\u00e1bitats intermedios, lo que constituye una ventaja para ellos. Esto parece causar las desventajas reproductivas de v. Aspis y demogr\u00e1ficas de v. Latastei. la zona de simpatr\u00eda se ajusta a una zona h\u00edbrida de tensi\u00f3n, constituyendo una barrera para la dispersi\u00f3n y el intercambio gen\u00e9tico de v. Aspis y v. Latastei.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Biogeograf\u00eda, ecolog\u00eda y estado de conservaci\u00f3n de las v\u00edboras ib\u00e9ricas (v. aspis, v. latastei y v. seoanei) en una zona de contacto en el norte peninsular<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Biogeograf\u00eda, ecolog\u00eda y estado de conservaci\u00f3n de las v\u00edboras ib\u00e9ricas (v. aspis, v. latastei y v. seoanei) en una zona de contacto en el norte peninsular <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Fernando Martinez Freiria <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 23\/10\/2009<\/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>Miguel Lizana Avia<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: salvador jos\u00e9 Peris \u00e1lvarez <\/li>\n<li>Juan  Manuel Pleguezuelos gomez (vocal)<\/li>\n<li>neftali Sillero pablos (vocal)<\/li>\n<li>marco A. l. zuffi (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Fernando Martinez Freiria El objetivo de esta tesis doctoral fue estudiar la influencia de los factores ambientales [&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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