{"id":38360,"date":"1998-01-07T00:00:00","date_gmt":"1998-01-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/evolucion-de-la-variabilidad-fenotipica-y-genetica-durante-el-desarrollo-del-pez-mosquito-gambusia-holbrooki\/"},"modified":"1998-01-07T00:00:00","modified_gmt":"1998-01-07T00:00:00","slug":"evolucion-de-la-variabilidad-fenotipica-y-genetica-durante-el-desarrollo-del-pez-mosquito-gambusia-holbrooki","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/evolucion-de-la-variabilidad-fenotipica-y-genetica-durante-el-desarrollo-del-pez-mosquito-gambusia-holbrooki\/","title":{"rendered":"Evolucion de la variabilidad fenotipica y genetica durante el desarrollo del pez mosquito (gambusia holbrooki)."},"content":{"rendered":"<h2>Tesis doctoral de <strong> \u00e1ngeles Longa Portabales <\/strong><\/h2>\n<p>En el presente trabajo se analiza el comportamiento de la varianza fenot\u00edpica para cinco caracteres morfol\u00f3gicos (altura, di\u00e1metro del ojo, longitud de la cabeza, longitud est\u00e1ndar y peso), desde el nacimiento hasta la madurez sexual, en peces de la especie gambusia holbrooki procedentes de dos poblaciones naturales de galicia, con objeto de demostrar la existencia de variabilidad gen\u00e9tica, principalmente de tipo aditivo, para dichos caracteres a lo largo de la ontogenia. El principal objetivo es conocer la din\u00e1mica de las distintas fuentes de variaci\u00f3n durante la ontogenia, lo cual es imprescindible para elegir caracter\u00edsticas y edades que puedan ser utilizadas en programas de gen\u00e9tica aplicada, adem\u00e1s de tener implicaciones evolutivas en las poblaciones naturales de peces. Por otro lado, se contrasta el patr\u00f3n de comportamiento de las heredabilidade y \u00abevolvabilities\u00bb durante el crecimiento y al inicio de la madurez sexual para los citados caracteres morfom\u00e9tricos y para un rasgo vital (edad a la madurez).  los resultados obtenidos indican fluctuaci\u00f3n de los par\u00e1metros gen\u00e9ticos estimados a lo largo de la ontogenia; apreci\u00e1ndose un valor m\u00e1ximo de variabilidad gen\u00e9tica a edades intermedias (generalmente a los 30 d\u00edas) y dos m\u00ednimos: uno al d\u00eda de edad y otro al inicio de la madurez sexual; lo que demuestra la importancia de hacer estimaciones de los par\u00e1metros gen\u00e9ticos a distintas fases vitales. Adem\u00e1s se concluye que el comportamiento de las heredabilidades y \u00abevolvabilities\u00bb no es paralelo ni a la madurez ni a lo largo del desarrollo; por tanto, la utilizaci\u00f3n de par\u00e1metros gen\u00e9ticos distintos permite valorar con m\u00e1s eficacia la evoluci\u00f3n de la variaci\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Evolucion de la variabilidad fenotipica y genetica durante el desarrollo del pez mosquito (gambusia holbrooki).<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Evolucion de la variabilidad fenotipica y genetica durante el desarrollo del pez mosquito (gambusia holbrooki). <\/li>\n<li><strong>Autor:<\/strong>\u00a0 \u00e1ngeles Longa Portabales <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/07\/1998<\/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 San Miguel Salan<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Gonzalo \u00e1lvarez Jurado <\/li>\n<li>Mar\u00eda Del Carmen Carracedo Cabanas (vocal)<\/li>\n<li>Pelayo Casares Guillen (vocal)<\/li>\n<li>Jaime Montes Perez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de \u00e1ngeles Longa Portabales En el presente trabajo se analiza el comportamiento de la varianza fenot\u00edpica para cinco [&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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