{"id":66664,"date":"2018-03-09T22:55:00","date_gmt":"2018-03-09T22:55:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/study-of-male-reproductive-physiology-and-sperm-conservation-in-the-european-eel-anguilla-anguilla-l\/"},"modified":"2018-03-09T22:55:00","modified_gmt":"2018-03-09T22:55:00","slug":"study-of-male-reproductive-physiology-and-sperm-conservation-in-the-european-eel-anguilla-anguilla-l","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/reproduccion-animal\/study-of-male-reproductive-physiology-and-sperm-conservation-in-the-european-eel-anguilla-anguilla-l\/","title":{"rendered":"Study of male reproductive physiology and sperm conservation in the european eel ( anguilla anguilla, l.)"},"content":{"rendered":"<h2>Tesis doctoral de <strong> David S\u00e1nchez Pe\u00f1arranda <\/strong><\/h2>\n<p>La anguila europea es una especie de gran importancia comercial en la acuicultura europea, pero el dram\u00e1tico descenso de las poblaciones naturales ha provocado la inclusi\u00f3n de esta especie en la lista cites (convenci\u00f3n del comercio internacional de especies en peligro de la fauna y flora salvaje). Considerando esta situaci\u00f3n, se hace necesaria m\u00e1s investigaci\u00f3n en el control reproductivo. el presente documento contiene 5 estudios que se pueden dividir en dos partes principales: la primera, una descripci\u00f3n del proceso de la maduraci\u00f3n artificial de la anguila, seguida por una segunda parte centrada en el de desarrollo de t\u00e9cnicas para la evaluaci\u00f3n de la calidad esperm\u00e1tica, y la conservaci\u00f3n del esperma. una vez fijado el tratamiento hormonal en anteriores estudios, nosotros hemos estudiado la evoluci\u00f3n de la calidad esperm\u00e1tica a lo largo del periodo de espermiaci\u00f3n, tratando de determinar las semanas con mayor porcentaje de muestras con alta calidad esperm\u00e1tica. Para la evaluaci\u00f3n de la calidad esperm\u00e1tica los par\u00e1metros analizados fueron los siguientes: porcentaje de c\u00e9lulas vivas, motilidad, y morfometr\u00eda de la cabeza del espermatozoide. El porcentaje de c\u00e9lulas vivas fue medido poniendo a punto t\u00e9cnicas de tinci\u00f3n fluorescentes, mientras que la medida del tama\u00f1o de la cabeza fue llevado a cabo por un programa inform\u00e1tico (sistema asma), pero este an\u00e1lisis present\u00f3 problemas debido a la especial forma de la cabeza del espermatozoide de esta especie. Para validar esta t\u00e9cnica fue necesario comparar los resultados obtenidos por el sistema asma con los obtenidos por el microscopio electr\u00f3nico de barrido. distintos machos que recibieron el mismo tratamiento hormonal mostraron diferentes respuestas en cuanto al nivel de desarrollo gonadal y calidad esperm\u00e1tica. Para entender qu\u00e9 factores pod\u00edan influir en en estos factores, se realiz\u00f3 por primera vez la descripci\u00f3n de la maduraci\u00f3n de machos de anguila europea, analizando la expresi\u00f3n de gnrhs y gonadotropinas, los n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Study of male reproductive physiology and sperm conservation in the european eel ( anguilla anguilla, l.)<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Study of male reproductive physiology and sperm conservation in the european eel ( anguilla anguilla, l.) <\/li>\n<li><strong>Autor:<\/strong>\u00a0 David S\u00e1nchez Pe\u00f1arranda <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 25\/07\/2008<\/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>Luz M\u00aa P\u00e9rez Igualada<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: gonzalo Mart\u00ednez rodr\u00edguez <\/li>\n<li>Jos\u00e9 Miguel Cerda reverter (vocal)<\/li>\n<li>elsa alexandra Cabrita (vocal)<\/li>\n<li>paz Herraez ortega (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de David S\u00e1nchez Pe\u00f1arranda La anguila europea es una especie de gran importancia comercial en la acuicultura europea, [&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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