{"id":60107,"date":"2018-03-09T22:47:56","date_gmt":"2018-03-09T22:47:56","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/filogenia-molecular-del-genero-fissurella-en-el-paca%c2%adfico-sudoriental\/"},"modified":"2018-03-09T22:47:56","modified_gmt":"2018-03-09T22:47:56","slug":"filogenia-molecular-del-genero-fissurella-en-el-paca%c2%adfico-sudoriental","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/filogenia-molecular-del-genero-fissurella-en-el-paca%c2%adfico-sudoriental\/","title":{"rendered":"Filogenia molecular del g\u00e9nero fissurella en el pac\u00edfico sudoriental"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Olivares Paz Alberto Nicol\u00e1s <\/strong><\/h2>\n<p>Las relaciones filogen\u00e9ticas de las especies clasificadas en el g\u00e9nero fissurella, y con distribuci\u00f3n en el pac\u00edfico sudoriental, han sido inferidas a partir del an\u00e1lisis de las secuencias parcial nucleot\u00eddica de los genes mitocondriales del citocromo b (cytb), subunidad 1 de la nadh deshidrogenasa (nd1) y arnr 16s, y de los genes nucleares del complejo robisomal arnr 18s-its1-arnr 5.8s-its2-arnr 28s e histona h3. Adem\u00e1s, se ha procedido a la caracterizaci\u00f3n de patrones de rapds para dichas especies. tales inferencias discrepan y son incompatibles con la actual clasificci\u00f3n y taxonom\u00eda, basada en caracteres morfol\u00f3gicos. En particular, se han detectado grupos que presentan relaciones en politom\u00eda, siendo consideradas como \u00abcomplejo latimarginata\u00bb (f.Latimarginata, f.Cumingi, f.Oriens y f.Bridgesii) y \u00abcomplejo costata-picta\u00bb (f.Picta y f.Costata), lo que plantea una revisi\u00f3n formal de su taxonom\u00eda. los datos paleontol\u00f3gicos, la dataci\u00f3n de eventos de la historia evolutiva a trav\u00e9s de la calibraci\u00f3n de un reloj molecular para el cytb (valor medio de 2,77% de divergencia por cada mill\u00f3n de a\u00f1os), y las relaciones filogen\u00e9ticas inferidas indican un escenario probable de la evoluci\u00f3n de las especies de fissurella del pac\u00edfico sudoriental. La colonizaci\u00f3n del pac\u00edfico, a partir de una forma ancestral atl\u00e1ntica, tendr\u00eda lugar en el plioceno, desde el atl\u00e1ntico a trav\u00e9s de la regi\u00f3n caribe\u00f1a. La elevaci\u00f3n del istmo de panam\u00e1, conducir\u00eda al aislamiento de las especies atl\u00e1nticas y pac\u00edficas posibilitando su aislamiento y diferenciaci\u00f3n gen\u00e9tica. Dicho cierre, junto con enfriamientos plioc\u00e9nicos, y los posteriores eventos de glaciaci\u00f3n pleistoc\u00e9rnicas son motores de la especiaci\u00f3n en el pac\u00edfico sudoriental. la estructura gen\u00e9tica poblaciones de f.Crassa, f.Limbata y del complejo f.Latimarginata &#8211; f.Cumingi indica un elevado flujo g\u00e9nico entre las \u00e1reas muestreadas. Los niveles de diversidad gen\u00e9tica y la historia demogr\u00e1fic<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Filogenia molecular del g\u00e9nero fissurella en el pac\u00edfico sudoriental<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Filogenia molecular del g\u00e9nero fissurella en el pac\u00edfico sudoriental <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Olivares Paz Alberto Nicol\u00e1s <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/07\/2007<\/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>Manuel Rey M\u00e9ndez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: manuel Freire rama <\/li>\n<li>carmen Gonzalez sotelo (vocal)<\/li>\n<li> P\u00e9rez mar\u00edn ricardo isaac (vocal)<\/li>\n<li>alejandro Guerra  d\u00edaz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Olivares Paz Alberto Nicol\u00e1s Las relaciones filogen\u00e9ticas de las especies clasificadas en el g\u00e9nero fissurella, y con [&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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