{"id":84774,"date":"2000-01-06T00:00:00","date_gmt":"2000-01-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/biologia-evolutiva-del-genere-an-oro-cy-mbium-colchicaceae-a-sudafrica-occidental\/"},"modified":"2000-01-06T00:00:00","modified_gmt":"2000-01-06T00:00:00","slug":"biologia-evolutiva-del-genere-an-oro-cy-mbium-colchicaceae-a-sudafrica-occidental","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/biologia-evolutiva-del-genere-an-oro-cy-mbium-colchicaceae-a-sudafrica-occidental\/","title":{"rendered":"Biolog\u00eda evolutiva del g\u00e9nere an oro cy mbium (colchicaceae) a sudafrica occidental"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Nuria Membrives Fern\u00e1ndez <\/strong><\/h2>\n<p>El g\u00e9nero androcymbium (colchicaceae) incluye unas 50 especies con una distribuci\u00f3n geogr\u00e1fica disjunta en el continente africano: unas 40 especies en sud\u00e1frica (principalmente en la regi\u00f3n occidental), 4 en la cuenca mediterranea y 2 en las islas canarias. Todas las especies son end\u00e9micas de distribuci\u00f3n muy reducida, o de rango geogr\u00e1fico restringido.  el objetivo principal de esta tesis es realizar un estudio de gen\u00e9tica de poblaciones es una representaci\u00f3n de 32 pobalciones que pertenecen a 17 especies distribuidas en la zona occidental de la provincia del cabo en sud\u00e1frica para analizar las posibles interacciones de los niveles y distribuci\u00f3n de la variabilidad gen\u00e9tica con factores bi\u00f3ticos y abi\u00f3ticos. se analiza la influencia de los procesos de especiaci\u00f3n seg\u00fan la historia ambiental de las zonas disjuntas donde se distribuye el g\u00e9nero androcymbium, en la estructura gen\u00e9tica de las poblaciones. Para interpretar las posibles interacciones se estudian aspectos de la ecolog\u00eda, de la morfolog\u00eda, de la biolog\u00eda reproductiva y relaciones filogen\u00e9ticas.  el estudio de ciertos aspectos de la variabilidad morfol\u00f3gica y gen\u00e9tica en estas especies sudafricanas, junto a recientes estudios morfol\u00f3gicos, cariol\u00f3gicos, palinol\u00f3gicos, de variabilitat aloenzim\u00e1tica y filogen\u00e9ticos con rflps del cpdna, de las 6 especies del g\u00e9nero norteafricanas, puede representar un modelo paradigm\u00e1tico para evaluar como influyen ciertos factores en aspectos de la evoluci\u00f3n del g\u00e9nero. Los resultados que se obtengan pueden ser contrastados con otros g\u00e9neros y familias con una distribuci\u00f3n geogr\u00e1fica disjunta similar.  los niveles de variabilidad en un corto periodo en el proceso de evoluci\u00f3n, considerando las relaciones entre las especies y poblaciones sudafricanas, estan altamente correlacionados con el sistema de reproducci\u00f3n (90,9%). en cambio, cuando analizamos las caracter\u00edsticas de las dos zonas disjuntas, y por lo tan<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Biolog\u00eda evolutiva del g\u00e9nere an oro cy mbium (colchicaceae) a sudafrica occidental<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Biolog\u00eda evolutiva del g\u00e9nere an oro cy mbium (colchicaceae) a sudafrica occidental <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Nuria Membrives Fern\u00e1ndez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/06\/2000<\/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>Joan Pedrola Monfort<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: juli\u00ed\u00a0n Molero briones <\/li>\n<li>isabel Mateu andr\u00e9s (vocal)<\/li>\n<li>julia P\u00e9rez de paz (vocal)<\/li>\n<li>pere Arus gorina (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Nuria Membrives Fern\u00e1ndez El g\u00e9nero androcymbium (colchicaceae) incluye unas 50 especies con una distribuci\u00f3n geogr\u00e1fica disjunta en [&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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