{"id":154915,"date":"2026-01-12T17:15:22","date_gmt":"2026-01-12T17:15:22","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-y-evolucion-del-tamano-y-la-forma-en-las-diatomeas\/"},"modified":"2026-01-12T17:15:22","modified_gmt":"2026-01-12T17:15:22","slug":"caracterizacion-y-evolucion-del-tamano-y-la-forma-en-las-diatomeas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/caracterizacion-y-evolucion-del-tamano-y-la-forma-en-las-diatomeas\/","title":{"rendered":"Caracterizacion y evolucion del tama\u00f1o y la forma en las diatomeas."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Berta Rodriguez Sanchez <\/strong><\/h2>\n<p>Analizamos el tama\u00f1o y la forma de 7 especies de diatomeas pennadas procedentes de poblaciones naturales:  frustulia rhomboides (ehr.) De toni, navicula radisa kutz, navicula marina ralfs, gomphonema acuminatum var.  coronata (ehr) w smith, tabellaria fenestrata (lyngb) kutz, tabellaria flocculosa (roth) kutz y pinnularia gibba ehr. Mediante metodos morfometricos calculamos el coeficiente de forma, la relacion s\/v y las ecuaciones de crecimiento para cada poblacion. En general, las diatomeas de mayor tama\u00f1o en una especie dada presentan cf menores (0,39) mientras que en los individuos de menor tama\u00f1o ocurre lo contrario (0,65). El rango de la s\/v es mas restringido cuando el crecimiento es alometrico que si lo suponemos isometrico. El estudio del frustulo al microscopio electronico de transmision revela que el % de superficie valvar ocupada por los poros es mayor cuando la diatomea es mas larga. En cultivo, phaeodactylum tricornutum (bohlin) duplica su tasa de division y reduce significativamente su tama\u00f1o medio en presencia de pdgf respecto a una poblacion testigo.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizacion y evolucion del tama\u00f1o y la forma en las diatomeas.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizacion y evolucion del tama\u00f1o y la forma en las diatomeas. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Berta Rodriguez Sanchez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1991<\/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>Eduardo Jos\u00e9 Costas Costas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Tom\u00e1s Gonz\u00e1lez Villa <\/li>\n<li>Jaime Renau Piqueras (vocal)<\/li>\n<li>Victoria Lopez Rodas (vocal)<\/li>\n<li>Manuel Martinez Fernandez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Berta Rodriguez Sanchez Analizamos el tama\u00f1o y la forma de 7 especies de diatomeas pennadas procedentes de [&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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