{"id":57928,"date":"2018-03-09T22:45:46","date_gmt":"2018-03-09T22:45:46","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/desarrollo-del-corazon-del-esturion-acipenser-naccarii\/"},"modified":"2018-03-09T22:45:46","modified_gmt":"2018-03-09T22:45:46","slug":"desarrollo-del-corazon-del-esturion-acipenser-naccarii","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/patologia-animal\/desarrollo-del-corazon-del-esturion-acipenser-naccarii\/","title":{"rendered":"Desarrollo del coraz\u00f3n del esturi\u00f3n acipenser naccarii"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Alejandro Guerrero Le\u00f3n <\/strong><\/h2>\n<p>En la presente tesis se describe el desarrollo embrionario del coraz\u00f3n del esturi\u00f3n (acipenser naccarii), desde la fertilizaci\u00f3n del huevo hasta el momento en que las c\u00e1maras cardiacas han establecido su estructura histol\u00f3gica definitiva. Tambi\u00e9n se describe y discute la aparici\u00f3n de defectos en la posici\u00f3n dorso-ventral del coraz\u00f3n en dos espec\u00edmenes afectos. en total se analizaron 388 individuos, embriones y alevines, de entre 1 y 90 d\u00edas post-eclosi\u00f3n. las t\u00e9cnicas empleadas fueron microscop\u00eda \u00f3ptica con tinciones histoqu\u00edmicas e inmunohistoqu\u00edmicas, as\u00ed como microscop\u00eda electr\u00f3nica de barrido y de transmisi\u00f3n.  os resultados incluyen una temporalizaci\u00f3n pormenorizada de los distintos estadios cardiog\u00e9nicos, la morfog\u00e9nesis de las distintas c\u00e1maras c\u00e1maras cardiacas, la formaci\u00f3n y diferenciaci\u00f3n del tracto de salida distal del coraz\u00f3n, el desarrollo del epicardio y la primera descripci\u00f3n de efectos en la posici\u00f3n dorso-ventral del coraz\u00f3n en esta especie.     las principales conclusiones que se derivan del estudio se pueden resumir como sigue:     1,- en el esturi\u00f3n, no se produce una inversi\u00f3n antero-posterior del coraz\u00f3n en las primeras etapas del desarrollo, como ocurre en tele\u00f3steos. En cambio, se produce una rotaci\u00f3n en c del tubo cardiaco, que se ha denominado asa primaria, no hom\u00f3loga al \u00abjogging\u00bb de tele\u00f3steos, \u00fanica en esta especie hasta el momento.     2,- el seno venoso del coraz\u00f3n embrionario del esturi\u00f3n drena los sinuosides hep\u00e1ticos de forma directa, sin interposici\u00f3n de un vaso, lo que constituye una disposici\u00f3n \u00fanica en los vertebrados.     3,- la diferenciaci\u00f3n de una capa ventricular compacta y otra esponjosa ocurre en el esturi\u00f3n en estadios relativamente tard\u00edos.     4,- el tracto de salida cardiaco embrionario del esturi\u00f3n presenta una porci\u00f3n proximal mioc\u00e1rdica y otra distal no mioc\u00e1rdiaca.      se pude afirmar que en los aacipenseriformes existe un verdadero bulbo arteri<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Desarrollo del coraz\u00f3n del esturi\u00f3n acipenser naccarii<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Desarrollo del coraz\u00f3n del esturi\u00f3n acipenser naccarii <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Alejandro Guerrero Le\u00f3n <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 13\/04\/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> Icardo De La Escalera Jos\u00e9 Manuel<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: valent\u00edn Sans coma <\/li>\n<li>Jos\u00e9 Antonio Hernando casal (vocal)<\/li>\n<li>adri\u00e1n Casinos pardos (vocal)<\/li>\n<li> Arqu\u00e9 gibernau Jos\u00e9 Mar\u00eda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Alejandro Guerrero Le\u00f3n En la presente tesis se describe el desarrollo embrionario del coraz\u00f3n del esturi\u00f3n (acipenser [&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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