{"id":65182,"date":"2008-12-06T00:00:00","date_gmt":"2008-12-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/salmonidos-y-cambio-global\/"},"modified":"2008-12-06T00:00:00","modified_gmt":"2008-12-06T00:00:00","slug":"salmonidos-y-cambio-global","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/genetica-de-poblaciones\/salmonidos-y-cambio-global\/","title":{"rendered":"Salmonidos y cambio global"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Am\u00e9rica Garc\u00eda Valiente <\/strong><\/h2>\n<p>Los peces son particularmente sensibles a las oscilaciones clim\u00e1ticas. \u00e9stas pueden causar cambios demogr\u00e1ficos, modificaciones en las estrategias de reproducci\u00f3n, y alteraciones en los modelos de distribuci\u00f3n y de las cadenas alimenticias de las especies. Otros factores ligados a la actividad humana, como las pesquer\u00edas o la introducci\u00f3n de individuos ex\u00f3ticos en un ecosistema tambi\u00e9n afectan a la distribuci\u00f3n global de las comunidades pisc\u00edcolas.Dada la gran diversidad de estructuras poblacionales, la plasticidad en sus formas de vida y caracter\u00edsticas del ciclo vital los salm\u00f3nidos se toman en este trabajo como modelo para el estudio del cambio global.Las poblaciones de salm\u00f3n atl\u00e1ntico del sur de europa han incrementado el flujo g\u00e9nico entre r\u00edos vecinos y la contribuci\u00f3n a la reproducci\u00f3n de los machos de maduraci\u00f3n temprana, y como consecuencia la variabilidad gen\u00e9tica, en respuesta al aumento de las temperaturas. El retraso en la llegada a su r\u00edo natal y una mayor proporci\u00f3n de apareamientos entre cohortes son otras de las adaptaciones de estas poblaciones al calentamiento global.Por otra parte, los salm\u00f3nidos aclimatados en suram\u00e9rica han sido capaces de adaptarse con \u00e9xito a sus nuevos ecosistemas a pesar de la reducida variabilidad gen\u00e9tica exhibida por sus poblaciones. Algunas de estas poblaciones han experimentados una r\u00e1pida modificaci\u00f3n en su comportamiento migratorio y en otras caracter\u00edsticas del ciclo vital en respuesta a alteraciones en su h\u00e1bitat introducidas por los humanos. Se propone que las caracter\u00edsticas demogr\u00e1fica y del ciclo de vida de los salm\u00f3nidos parecen ser m\u00e1s importantes que la variabilidad gen\u00e9tica en su adaptaci\u00f3n al cambio global.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Salmonidos y cambio global<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Salmonidos y cambio global <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Am\u00e9rica Garc\u00eda Valiente <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Oviedo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/06\/2008<\/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>Eva Garc\u00eda V\u00e1zquez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: ram\u00f3n Giraldez ceballos escalera <\/li>\n<li>edward Beall (vocal)<\/li>\n<li>Ana rosa Linde arias (vocal)<\/li>\n<li>paloma Mor\u00e1n mart\u00ednez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Am\u00e9rica Garc\u00eda Valiente Los peces son particularmente sensibles a las oscilaciones clim\u00e1ticas. \u00e9stas pueden causar cambios demogr\u00e1ficos, [&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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