{"id":82057,"date":"2000-01-01T00:00:00","date_gmt":"2000-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/cinetica-de-bioacumulacion-de-metales-pesados-y-estres-ecofisiologico-en-ulva-sp\/"},"modified":"2000-01-01T00:00:00","modified_gmt":"2000-01-01T00:00:00","slug":"cinetica-de-bioacumulacion-de-metales-pesados-y-estres-ecofisiologico-en-ulva-sp","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/cinetica-de-bioacumulacion-de-metales-pesados-y-estres-ecofisiologico-en-ulva-sp\/","title":{"rendered":"Cinetica de bioacumulacion de metales pesados y estres ecofisiologico en ulva  sp."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Barraza Sandoval Jos\u00e9 Enrique <\/strong><\/h2>\n<p>Se determin\u00f3 la capacidad de bioconcentraci\u00f3n de cd, co, cu, cr, ni, pb y zn en discos (d=19.0 mm) de ulva sp.; Tambi\u00e9n, se midi\u00f3 el estr\u00e9s producido por los mismos en la fotos\u00edntesis neta, respiraci\u00f3n, fluorescencia de clorofila (pam-2000), tasa de crecimiento, as\u00ed como, se utilizaron \u00edndices toxicol\u00f3gicos para caracterizar la relaci\u00f3n bioconcentraci\u00f3n vs. Estr\u00e9s.  los discos de ulva sp. Presentaron mayor afinidad por pb que por el resto de metales. Lo contrario ocurri\u00f3 con zn. Las cin\u00e9ticas de bioconcentraci\u00f3n de cd se ajustaron a modelos de michaelis menten, los dem\u00e1s elementos presentaron tendencias lineales de incorporaci\u00f3n, en la mayor\u00eda de los casos.  mediante la tasa fotosint\u00e9tica neta y la fluorescencia de clorofila, se determin\u00f3 que el aparato fotosint\u00e9tico de ulva sp. Fue inhibido por la mayor\u00eda de los metales con excepci\u00f3n de co y ni. De igual manera ocurri\u00f3 en la respiraci\u00f3n, aunque ocurri\u00f3 evidencia de estimulaciones por parte de pb, cr y zn.  la mayor\u00eda de los metales inhibieron el crecimiento de los discos, aunque se consider\u00f3 que tambi\u00e9n influy\u00f3 la actividad saprobia y los per\u00edodos estacionales de crecimiento de ulva sp. el ti50 y la ci50 indican que el cu fue el metal de mayor potencia t\u00f3xica  sobre la fotos\u00edntesis neta y fluorescencia de clorofila del alga. Por el contrario, co y ni no presentaron inhibici\u00f3n evidente en estos par\u00e1metros. Los otros \u00edndices (maxci50, minci50, cmat, pnec y tmr) no aportaron informaci\u00f3n toxicol\u00f3gica adecuada.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Cinetica de bioacumulacion de metales pesados y estres ecofisiologico en ulva  sp.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Cinetica de bioacumulacion de metales pesados y estres ecofisiologico en ulva  sp. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Barraza Sandoval Jos\u00e9 Enrique <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/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>Alejo Carballeira Oca\u00f1a<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Carlos Real rodriguez <\/li>\n<li>Jes\u00fas Lopez perez (vocal)<\/li>\n<li>rodolfo Barreiro lozano (vocal)<\/li>\n<li>abelardo Gomez parra (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Barraza Sandoval Jos\u00e9 Enrique Se determin\u00f3 la capacidad de bioconcentraci\u00f3n de cd, co, cu, cr, ni, pb [&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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