{"id":5199381,"date":"2012-10-25T20:04:52","date_gmt":"2012-10-25T18:04:52","guid":{"rendered":"https:\/\/www.ozono21.com\/blog\/?p=5199381"},"modified":"2026-02-18T12:48:56","modified_gmt":"2026-02-18T10:48:56","slug":"insecticidas-delfines-de-brasil","status":"publish","type":"post","link":"https:\/\/www.ozono21.com\/blog\/contaminacion\/insecticidas-delfines-de-brasil\/","title":{"rendered":"Encuentran restos de insecticidas en delfines de Brasil"},"content":{"rendered":"<p style=\"text-align: justify;\">\n<h2 style=\"text-align: justify;\"><strong><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-5199386\" style=\"margin: 20px 10px 20px 0px; border: 0px;\"  title=\"Delfin Cr\u00eda muerta. Encuentran restos de insecticidas en delfines de Brasil\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2012\/10\/Delfin-Cr\u00eda-muerta.png\" alt=\" insecticidas \" width=\"300\" height=\"202\" \/><a title=\"Ozono21 Desinfecci\u00f3n\" href=\"https:\/\/www.ozono21.com\/sectores-pagina\/empresariales\/desinfeccion-limpieza\/3\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Investigadores del Consejo Superior de Investigaciones Cient\u00edficas (CSIC) han dirigido una investigaci\u00f3n que ha encontrado restos de insecticidas en delfines de Brasil. Hasta ahora, los investigadores pensaban que los mam\u00edferos degradaban y expulsaban estos compuestos en su totalidad.<\/a><\/strong><\/h2>\n<\/p>\n<p>Fuente: ambientum (18\/7\/2012)<\/p>\n<p style=\"text-align: justify;\">Las mayores concentraciones <strong>se han localizado en las cr\u00edas<\/strong>, no preparadas para metabolizar estos compuestos. El estudio aparece en el \u00faltimo n\u00famero de la revista Environment International.<\/p>\n<p style=\"text-align: justify;\">En el trabajo, dirigido por la investigadora del CSIC Ethel Eljarrat, del Instituto de Diagn\u00f3stico Ambiental y Estudios del Agua (IDAEA), se han analizado <strong>muestras extra\u00eddas de 23 delfines hallados muertos<\/strong> varados en playas brasile\u00f1as o atrapados en redes de pesca.<\/p>\n<p style=\"text-align: justify;\">\u201cEstos contaminantes encontrados en los delfines son insecticidas piretroides, es decir, los de uso com\u00fan en los hogares y en los campos agr\u00edcolas. Hasta ahora <strong>se pensaba que estos compuestos se degradan en el organismo<\/strong> y se expulsan\u201d, detalla el investigador del CSIC y director de la investigaci\u00f3n, Dami\u00e0 Barcel\u00f3.<\/p>\n<p><strong>Diferencias entre las cr\u00edas y los ejemplares adultos<\/strong><\/p>\n<p style=\"text-align: justify;\">Los resultados muestran concentraciones de piretroides en los delfines adultos de 7,04 nanogramos por gramo de grasa en adultos y 68,4 nanogramos por gramo de grasa en las cr\u00edas. <strong>Los investigadores destacan la gran diferencia en las concentraciones de contaminantes entre los adultos y las cr\u00edas. Seg\u00fan se\u00f1alas los investigadores, \u201clas cr\u00edas han recibido los contaminantes por transmisi\u00f3n materna\u201d.<\/strong><\/p>\n<p style=\"text-align: justify;\">Para confirmar la transmisi\u00f3n de la madre a la cr\u00eda, se analizaron muestras de leche materna y de placentas de delf\u00edn. <strong>Los an\u00e1lisis mostraron que en la leche materna hab\u00eda entre 2 y 4,7 nanogramos de piretroides por gramo de grasa en la leche materna.<\/strong><\/p>\n<p style=\"text-align: justify;\">Adem\u00e1s, algo que<strong> refuerza la hip\u00f3tesis<\/strong>, es que se han encontrado entre 331 y 1.812 nanogramos por gramo de grasa en las placentas.<\/p>\n<p style=\"text-align: justify;\">\u201c<strong>En general, los piretroides se metabolizan y degradan<\/strong>, pero ahora queda claro que no se eliminan completamente, por lo que una parte que se acumula en el organismo\u201d, explica Eljarrat.<\/p>\n<p style=\"text-align: justify;\">La investigadora del CSIC a\u00f1ade: \u201c<strong>El uso constante de piretroides en la agricultura y en los hogares, y su dispersi\u00f3n en el entorno, hace que las concentraciones en el mar, por m\u00ednimas que sean, acaben llegando a los peces y a los delfines.<\/strong> Adem\u00e1s, creemos que los delfines no est\u00e1n preparados para metabolizar esos compuestos cuando son cr\u00edas, sino que su organismo empieza a degradarlos y expulsarlos cuando se convierten en ejemplares adultos\u201d.<\/p>\n<p style=\"text-align: justify;\"><strong>El uso de los piretroides<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong><a title=\"Ozono elimina Insectos\" href=\"https:\/\/www.ozono21.com\/actualidad-interna\/ozono-ataca-mata-insectos\/29\/\" target=\"_blank\" rel=\"noopener noreferrer\">Los piretroides son insecticidas de uso com\u00fan, presentes en productos como los dispositivos anti mosquitos, las f\u00f3rmulas anti piojos o algunos insecticidas de uso hort\u00edcola. Tambi\u00e9n se usan a mayor escala en algunos pa\u00edses, como Brasil, para el control de la malaria y el dengue.<\/a><\/strong><\/p>\n<p style=\"text-align: justify;\">Los piretroides se degradan al <strong>ser expuestos a la luz solar<\/strong>, y en el medio ambiente acaban por desaparecer por degradaci\u00f3n.<\/p>\n<p style=\"text-align: justify;\">Para localizar los delfines se ha contado con la colaboraci\u00f3n de<strong> tres universidades de Brasil<\/strong> y la ONG Projecto BioPesca.<\/p>\n<table border=\"3\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td align=\"center\" bgcolor=\"#3b7cff\" width=\"600\" height=\"25\"><strong><a title=\"Acci\u00f3n 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><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><big><\/p>\n<ul>\n<li><strong><a title=\"Los insecticidas suponen un peligro para los r\u00edos europeos\" rel=\"bookmark\" href=\"https:\/\/www.ozono21.com\/blog\/contaminacion\/los-insecticidas-suponen-un-peligro-para-los-rios-europeos\/\" target=\"_blank\" rel=\"noopener noreferrer\">Los insecticidas suponen un peligro para los r\u00edos europeos<\/a><\/strong><\/li>\n<li><strong><a title=\"Suicidio masivo de delfines en Ir\u00e1n\" href=\"https:\/\/www.ozono21.com\/blog\/agua\/suicidio-masivo-de-delfines-en-iran\/\" target=\"_blank\" rel=\"noopener noreferrer\">Suicidio masivo de delfines en Ir\u00e1n<\/a><\/strong><\/li>\n<li><strong><a title=\"La sobrepesca y la contaminaci\u00f3n tambi\u00e9n matan a los delfines del Mediterr\u00e1neo\" href=\"https:\/\/www.ozono21.com\/blog\/agua\/la-sobrepesca-y-la-contaminacion-tambien-matan-a-los-delfines-del-mediterraneo\/\" target=\"_blank\" rel=\"noopener noreferrer\">La sobrepesca y la contaminaci\u00f3n tambi\u00e9n matan a los delfines del Mediterr\u00e1neo<\/a><\/strong><\/li>\n<\/ul>\n<p><\/big><\/p>\n<table border=\"3\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td align=\"center\" bgcolor=\"#3b7cff\" width=\"600\" height=\"25\"><strong><a title=\"Videos YouTube\" href=\"https:\/\/www.youtube.com\/user\/ozono21\/videos?sort=p&amp;view=0&amp;flow=grid\" target=\"_blank\" 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><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/P><\/p>\n<p style=\"text-align: center;\"><iframe loading=\"lazy\" width=\"640\" height=\"480\" src=\"https:\/\/www.youtube.com\/embed\/wFUSTEcovXw\" 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_5199381\" class=\"pvc_stats total_only  \" data-element-id=\"5199381\" 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>Investigadores del Consejo Superior de Investigaciones Cient\u00edficas (CSIC) han dirigido una investigaci\u00f3n que ha encontrado restos de insecticidas en delfines de Brasil. Hasta ahora, los investigadores pensaban que los mam\u00edferos degradaban y expulsaban estos compuestos en su totalidad. Fuente: ambientum &hellip; <a href=\"https:\/\/www.ozono21.com\/blog\/contaminacion\/insecticidas-delfines-de-brasil\/\">Sigue leyendo <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5199381\" class=\"pvc_stats total_only  \" data-element-id=\"5199381\" 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},"author":1,"featured_media":5199386,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[17,13],"tags":[68,23,20,65,74,36],"class_list":["post-5199381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-contaminacion","category-medioambiente","tag-agua","tag-animales","tag-contaminacion-2","tag-desinfeccion","tag-medioambiente","tag-toxinas-2"],"a3_pvc":{"activated":true,"total_views":3027,"today_views":0},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Insecticidas en delfines de Brasil<\/title>\n<meta name=\"description\" content=\"Insecticidas en delfines de Brasil. Los investigadores pensaban que los mam\u00edferos degradaban y expulsaban, insecticidas en su totalidad\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ozono21.com\/blog\/contaminacion\/insecticidas-delfines-de-brasil\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Insecticidas en delfines de Brasil\" \/>\n<meta property=\"og:description\" content=\"Insecticidas en delfines de Brasil. Los investigadores pensaban que los mam\u00edferos degradaban y expulsaban, insecticidas en su totalidad\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ozono21.com\/blog\/contaminacion\/insecticidas-delfines-de-brasil\/\" \/>\n<meta property=\"og:site_name\" content=\"- Blog Ozono21\" \/>\n<meta property=\"article:published_time\" content=\"2012-10-25T18:04:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-18T10:48:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2012\/10\/Delfin-Cr\u00eda-muerta-e1436610455792.png\" \/>\n\t<meta property=\"og:image:width\" content=\"298\" \/>\n\t<meta property=\"og:image:height\" content=\"180\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"INVESTIGACION Ozono21\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"INVESTIGACION Ozono21\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/\"},\"author\":{\"name\":\"INVESTIGACION Ozono21\",\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/#\\\/schema\\\/person\\\/16639932c214a173193498aee8204d12\"},\"headline\":\"Encuentran restos de insecticidas en delfines de Brasil\",\"datePublished\":\"2012-10-25T18:04:52+00:00\",\"dateModified\":\"2026-02-18T10:48:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/\"},\"wordCount\":559,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/wp-content\\\/uploads\\\/2012\\\/10\\\/Delfin-Cr\u00eda-muerta-e1436610455792.png\",\"keywords\":[\"Agua\",\"Animales\",\"Contaminaci\u00f3n\",\"DESINFECCION\",\"MedioAmbiente\",\"Toxinas\"],\"articleSection\":[\"Contaminaci\u00f3n\",\"MedioAmbiente\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/\",\"url\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/\",\"name\":\"Insecticidas en delfines de Brasil\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/contaminacion\\\/insecticidas-delfines-de-brasil\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/wp-content\\\/uploads\\\/2012\\\/10\\\/Delfin-Cr\u00eda-muerta-e1436610455792.png\",\"datePublished\":\"2012-10-25T18:04:52+00:00\",\"dateModified\":\"2026-02-18T10:48:56+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.ozono21.com\\\/blog\\\/#\\\/schema\\\/person\\\/16639932c214a173193498aee8204d12\"},\"description\":\"Insecticidas en delfines de Brasil. 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