{"id":5192994,"date":"2009-07-07T22:05:05","date_gmt":"2009-07-07T23:05:05","guid":{"rendered":"https:\/\/www.ozono21.com\/blog\/5192994\/sin-categoria\/demuestran-que-el-canibalismo-sexual-en-la-tarantula-mediterranea-beneficia-a-las-hembras\/"},"modified":"2026-01-28T20:33:13","modified_gmt":"2026-01-28T18:33:13","slug":"demuestran-que-el-canibalismo-sexual-en-la-tarantula-mediterranea-beneficia-a-las-hembras","status":"publish","type":"post","link":"https:\/\/www.ozono21.com\/blog\/animales\/demuestran-que-el-canibalismo-sexual-en-la-tarantula-mediterranea-beneficia-a-las-hembras\/","title":{"rendered":"Demuestran que el canibalismo sexual en la tar\u00e1ntula mediterr\u00e1nea beneficia a las hembras"},"content":{"rendered":"<p style=\"text-align: justify;\">\n<h2 style=\"text-align: justify;\"><strong><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-5193476\" style=\"MARGIN: 50px 10px 40px 20px; border: 0px;\" title=\"Demuestran que el canibalismo sexual en la tar\u00e1ntula mediterr\u00e1nea beneficia a las hembras\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2009\/07\/tar\u00e1ntula-mediterr\u00e1nea.jpg\" alt=\" tar\u00e1ntula \" width=\"226\" height=\"223\" \/><a title=\"Ozono21 Soluciones\" href=\"https:\/\/www.ozono21.com\/soluciones.php?d=sec&amp;s=5\" target=\"_blank\" rel=\"noopener noreferrer\">Demuestran que el canibalismo sexual en la tar\u00e1ntula mediterr\u00e1nea beneficia a las hembras <\/p>\n<p>Un tercio de las hembras de la tar\u00e1ntula mediterr\u00e1nea (Lycosa tarantula) se alimenta del macho en lugar de aparearse con \u00e9l.<\/a><\/strong><\/h2>\n<p><\/P><\/p>\n<p style=\"text-align: justify;\"><strong>Los experimentos demostraron que el canibalismo sexual ocurre de modo frecuente en la naturaleza y que su pr\u00e1ctica beneficia a la hembra, que aumenta as\u00ed su \u00e9xito reproductivo:<\/strong> aquellas que se alimentan de machos tienen m\u00e1s descendencia y de mayor calidad que las que s\u00f3lo se alimentan de presas.<\/P><\/p>\n<p>Fuente: CSIC (22\/10\/2008)<\/p>\n<p style=\"text-align: justify;\">Los investigadores hallaron adem\u00e1s que la pr\u00e1ctica es m\u00e1s frecuente cuanto mayor es el n\u00famero de machos disponibles y por parte de hembras que ya tienen esperma almacenado de un encuentro anterior (apareamiento y fecundaci\u00f3n no ocurren a la vez en las ara\u00f1as, sino que las hembras almacenan el esperma en su interior hasta que los huevos est\u00e1n listos para ser fecundados).<\/p>\n<p style=\"text-align: justify;\"><strong>Hasta ahora, las evidencias de canibalismo sexual en animales eran escasas y dif\u00edciles de interpretar.<\/strong> \u201cCasi todos los datos proced\u00edan de experimentos de laboratorio, que no siempre reflejan de manera fiable el comportamiento en libertad\u201d, <strong>explica Jordi Moya, de la Estaci\u00f3n Experimental de Zonas \u00c1ridas (CSIC, Almer\u00eda).<\/strong><\/p>\n<p style=\"text-align: justify;\">En esta ocasi\u00f3n, los investigadores han trabajado con animales en libertad dentro de parcelas controladas de las zonas semi-des\u00e9rticas de Almer\u00eda, el h\u00e1bitat natural de esta especie. \u201cSe trata de la primera vez que se realizan estos experimentos en condiciones naturales\u201d, contin\u00faa el investigador. \u201cEs por tanto la primera evidencia fiable de que el canibalismo sexual ocurre con frecuencia en la naturaleza, al menos en una especie, y que beneficia a las hembras\u201d.<\/p>\n<p style=\"text-align: justify;\"><strong>Los investigadores barajan la hip\u00f3tesis de que la escasa disponibilidad de alimento en las zonas \u00e1ridas donde habita esta especie es la que propicia este comportamiento. Se tratar\u00eda de una estrategia de las hembras para paliar el hambre y tener nutrientes y recursos energ\u00e9ticos suficientes para engordar los huevos y asegurar la descendencia.<\/strong><\/p>\n<p style=\"text-align: justify;\">En estos momentos realizan nuevos estudios para comprobar si las hembras mejor nutridas son menos propensas a atacar a los machos.<\/p>\n<p style=\"text-align: justify;\"><strong>En la investigaci\u00f3n han participado adem\u00e1s investigadores de la Universidad Aut\u00f3noma de Madrid y la Universidad de Illinois (Chicago, Estados Unidos).<\/strong><\/p>\n<table border=\"3\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td bgcolor=\"#3b7cff\" height=\"25\" width=\"600\" align=\"center\"><strong><a title=\"Actualidad ACCION del OZONO\" href=\"https:\/\/www.ozono21.com\/actualidad-interna\/accion-del-ozono\/423\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2014\/06\/Noticias-Relacionadas.png\" alt=\"Noticias Relacionadas\" width=\"600\" height=\"25\" border=\"0\" \/><\/a><\/strong>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><big><strong><\/p>\n<ul>\n<li><a title=\"SEXUAL\" target=\"_blank\" href=\"https:\/\/www.ozono21.com\/blog\/?s=sexual\" rel=\"noopener noreferrer\">SEXUAL<\/a><\/li>\n<\/ul>\n<p><\/strong><\/big><\/p>\n<table border=\"3\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td bgcolor=\"#3b7cff\" height=\"25\" width=\"600\" align=\"center\"><strong><a title=\"Videos YouTube\" target=\"_blank\" href=\"https:\/\/www.youtube.com\/user\/ozono21\/videos?sort=p&amp;view=0&amp;flow=grid\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2014\/06\/Videos-Youtube.png\" alt=\"Videos Youtube\" width=\"600\" height=\"25\" border=\"0\" \/><\/a><\/strong>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p style=\"TEXT-ALIGN: center\"><iframe loading=\"lazy\" width=\"588\" height=\"480\" src=\"https:\/\/www.youtube.com\/embed\/v5qrxek61lA\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5192994\" class=\"pvc_stats total_only  \" data-element-id=\"5192994\" style=\"\"><i class=\"pvc-stats-icon small\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Demuestran que el canibalismo sexual en la tar\u00e1ntula mediterr\u00e1nea beneficia a las hembras Un tercio de las hembras de la tar\u00e1ntula mediterr\u00e1nea (Lycosa tarantula) se alimenta del macho en lugar de aparearse con \u00e9l. Los experimentos demostraron que el canibalismo &hellip; <a href=\"https:\/\/www.ozono21.com\/blog\/animales\/demuestran-que-el-canibalismo-sexual-en-la-tarantula-mediterranea-beneficia-a-las-hembras\/\">Sigue leyendo <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5192994\" class=\"pvc_stats total_only  \" data-element-id=\"5192994\" style=\"\"><i class=\"pvc-stats-icon small\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 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