{"id":84966,"date":"2000-12-06T00:00:00","date_gmt":"2000-12-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/patrones-ecomorfologicos-relacionados-con-la-migracion-de-las-aves-passeriformes\/"},"modified":"2000-12-06T00:00:00","modified_gmt":"2000-12-06T00:00:00","slug":"patrones-ecomorfologicos-relacionados-con-la-migracion-de-las-aves-passeriformes","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/patrones-ecomorfologicos-relacionados-con-la-migracion-de-las-aves-passeriformes\/","title":{"rendered":"Patrones ecomorfologicos relacionados con la migracion de las aves passeriformes."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ricardo Gomez Calmaestra <\/strong><\/h2>\n<p>La conducta migratoria es considerada una importante presi\u00f3n selectiva que, a priori, puede ser responsable de la aparici\u00f3n y mantenimiento de modificaciones adaptativas en la morfolog\u00eda. En el aparato locomotor, se esperar\u00edan modificaciones funcionalmente ventajosas, implicando disminuci\u00f3n en los costes del vuelo. A partir de esta hip\u00f3tesis general, se analiza la morfolog\u00eda externa, \u00f3sea y muscular del aparato locomotor de un amplio conjunto de aves passeriformes (32 especies pertenecientes a 8 familias diferentes). Se plantea un conjunto de predicciones sobre cada sistema funcional, y teniendo en cuenta que los caracteres convergentes pueden ser hom\u00f3logos o an\u00e1logos, se emplean m\u00e9todos de an\u00e1lisis filogen\u00e9tico. los resultados obtenidos indican que la migraci\u00f3n es uno de los factores que ha contribuido al modelado evolutivo del dise\u00f1o morfol\u00f3gico que hoy observamos en las aves passeriformes migradoras, modificado adaptativamente para minimizar los costes del vuelo activo. Atendiendo a morfolog\u00eda externa, presentan mayor aspect ratio y envergadura, as\u00ed como marcada tendencia hacia mayores longitudes alares. Aunque esperable, los migrantes no poseen menores cargas alares. En cuanto a morfolog\u00eda \u00f3sea, los migrantes poseen mayores dimensiones esternales y coracoides m\u00e1s largo, lo que incrementa la superficie de inserci\u00f3n para los m\u00fasculos de vuelo. La variabilidad de las longitudes y anchuras m\u00ednimas de los huesos de ambas extremidades no est\u00e1 relacionada con la conducta migratoria. Los migrantes se caracterizan por presentar el m\u00fasculo pectoral (responsable de la depresi\u00f3n alar, principal movimiento para progresar un vuelo) m\u00e1s fuerte y pesado. Sin embargo, no se observan diferencias en el m\u00fasculo supracoracoideo (el principal elevador de las alas), hecho esperable dado el car\u00e1cter autom\u00e1tivo de este movimiento durante el vuelo activo. Existe una clara tendencia hacia la disminuci\u00f3n del peso de la extremidad po<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Patrones ecomorfologicos relacionados con la migracion de las aves passeriformes.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Patrones ecomorfologicos relacionados con la migracion de las aves passeriformes. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ricardo Gomez Calmaestra <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/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>Eulalia Moreno Ma\u00f1as<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 Luis Telleria Jorge <\/li>\n<li>mario D\u00edaz esteban (vocal)<\/li>\n<li>Andr\u00e9s Barbosa alcon (vocal)<\/li>\n<li>Juan  Carlos Senar jorda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ricardo Gomez Calmaestra La conducta migratoria es considerada una importante presi\u00f3n selectiva que, a priori, puede ser [&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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