{"id":17617,"date":"2019-02-05T20:00:07","date_gmt":"2019-02-05T19:00:07","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=17617"},"modified":"2019-01-08T05:18:34","modified_gmt":"2019-01-08T04:18:34","slug":"en-etudiant-de-livoire-delephant-des-chercheurs-decouvrent-de-ladn-de-mammouth","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/en-etudiant-de-livoire-delephant-des-chercheurs-decouvrent-de-ladn-de-mammouth\/","title":{"rendered":"En \u00e9tudiant de l&rsquo;ivoire d&rsquo;\u00e9l\u00e9phant, des chercheurs d\u00e9couvrent&#8230; de l&rsquo;ADN de mammouth"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>En \u00e9tudiant l\u2019ADN issu de pr\u00e9tendues d\u00e9fenses d\u2019\u00e9l\u00e9phants, des chercheurs \u00e9cossais ont eu la surprise d\u2019y d\u00e9celer des fragments attribu\u00e9s au mammouth. Une d\u00e9couverte fortuite qui met en lumi\u00e8re l\u2019action de ces sp\u00e9cialistes en g\u00e9n\u00e9tique de la conservation : prot\u00e9ger les \u00e9l\u00e9phants, ainsi que d\u2019autres groupes d\u2019animaux menac\u00e9s au Cambodge gr\u00e2ce \u00e0 l\u2019analyse de leur ADN.<\/p>\n<p>Les glaces de l\u2019Arctique en recelaient d\u00e9j\u00e0 d\u2019infimes fragments, mais voici que de l\u2019ADN de mammouth vient d\u2019\u00eatre d\u00e9cel\u00e9 dans ce qui \u00e9tait cens\u00e9 n\u2019\u00eatre que de l\u2019ivoire\u2026 d\u2019\u00e9l\u00e9phant ! Une d\u00e9couverte inattendue effectu\u00e9e dans le cadre d\u2019un projet innovant de lutte contre le trafic d\u2019ivoire.<\/p>\n<p>\u00ab\u00a0\u00c0 notre grande surprise, [\u2026] nous avons d\u00e9couvert des \u00e9chantillons [issus] du mammouth dans des bijoux vendus [au Cambodge]\u00a0\u00bb, d\u00e9voile dans un article publi\u00e9 par la BBC le docteur Alex Ball, \u00e0 la t\u00eate de l\u2019\u00e9quipe du WildGenes laboratory, un centre de recherche de la Royal Zoological Society of Scotland.<\/p>\n<p>\u00ab\u00a0Les propri\u00e9taires de [bijouteries] appellent \u00e7a de l\u2019ivoire d\u2019\u00e9l\u00e9phant, mais nous avons d\u00e9couvert qu\u2019il s\u2019agit en fait de mammouth. [Cet ivoire] est tout simplement issu de la toundra de l\u2019Arctique, d\u00e9terr\u00e9 dans le sol\u00a0\u00bb, explique Alex Ball. Une d\u00e9couverte fortuite qui met en lumi\u00e8re d\u2019une mani\u00e8re inattendue l\u2019action des scientifiques.<\/p>\n<p>Des mammouths aux \u00e9l\u00e9phants actuels<\/p>\n<p>Pas encore \u00e9teintes mais s\u00e9rieusement menac\u00e9es, les autres esp\u00e8ces de la famille \u00e0 laquelle appartenait jadis le mammouth &#8211; disparu il y a pr\u00e8s de 10.000 ans &#8211; concentrent en effet toute l\u2019attention des chercheurs du WildGenes laboratory. L\u2019\u00e9quipe de ce laboratoire s\u2019attelle \u00e0 prot\u00e9ger les \u00e9l\u00e9phants gr\u00e2ce \u00e0 une approche novatrice : l\u2019\u00e9tude de leur ADN.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>Bas\u00e9 au zoo d\u2019Edimbourg, le laboratoire participe \u00e0 la lutte contre le commerce ill\u00e9gal de l\u2019ivoire \u00e0 des milliers de kilom\u00e8tres de l\u2019\u00c9cosse : au Cambodge. Les chercheurs britanniques entendent fonder l\u2019un des tout premiers laboratoires de g\u00e9n\u00e9tique de la conservation du pays.<\/p>\n<p>\u00ab\u00a0L\u2019un des points-cl\u00e9 en ce qui concerne le Cambodge, est que nous n\u2019avons quasiment aucune information sur le commerce de l\u2019ivoire\u00a0\u00bb, d\u00e9plore Alex Ball. De pr\u00e9cieuses bases de donn\u00e9es qui font d\u00e9faut aux scientifiques, mais qu\u2019ils sont en passe de constituer gr\u00e2ce \u00e0 l\u2019\u00e9tude de l\u2019ADN contenu dans les d\u00e9fenses des pachydermes.<\/p>\n<p>\u00ab\u00a0En gros, nous pouvons d\u00e9composer la dentine et le calcium et extraire les cellules de l\u2019ivoire. Ensuite, nous pouvons identifier l\u2019individu sur lequel a pouss\u00e9 une d\u00e9fense donn\u00e9e\u00a0\u00bb, explique le chercheur britannique. Une identification fiable et pr\u00e9cise, qui permet aux scientifiques de remonter aux origines d\u2019un ivoire parfois issu d\u2019esp\u00e8ces rares, et surtout menac\u00e9es.<\/p>\n<p>\u00ab\u00a0De nouvelles m\u00e9thodes\u00a0\u00bb qui passent toutes par une \u00e9tude ADN, quelle qu\u2019en soit l\u2019origine. Pour les quelque 250 \u00e0 500 \u00e9l\u00e9phants d\u2019Asie vivant encore au Cambodge, c\u2019est ainsi non-pas \u00e0 partir de leurs d\u00e9fenses, mais plut\u00f4t de leurs excr\u00e9ments que les scientifiques parviennent \u00e0 extraire de l\u2019ADN. De quoi leur permettre de dresser un tableau pr\u00e9cis de l\u2019\u00e9tat de cette population tr\u00e8s fragile. Qu\u2019il soit issu des glaces de l\u2019Arctique, de pr\u00e9cieuses d\u00e9fenses d\u2019ivoire, ou de d\u00e9jections ; l\u2019ADN des pachydermes semble d\u00e9cid\u00e9ment constituer l\u2019un des principaux espoirs pour permettre leur sauvegarde.<\/p>\n<p>source : <a href=\"https:\/\/www.maxisciences.com\/mammouth\/en-etudiant-de-l-ivoire-d-elephant-des-chercheurs-decouvrent-de-l-adn-de-mammouth_art42448.html?fbclid=IwAR0Kpar_nVi0M5LrZzrVx7rtobIfnnMcll5H0FjVBe8okZlgcZlxwALokvY\" target=\"_blank\" rel=\"noopener\">https:\/\/www.maxisciences.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"17617\">(3265)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>En \u00e9tudiant l\u2019ADN issu de pr\u00e9tendues d\u00e9fenses d\u2019\u00e9l\u00e9phants, des chercheurs \u00e9cossais ont eu la surprise d\u2019y d\u00e9celer des fragments attribu\u00e9s&#8230;<\/p>\n","protected":false},"author":1,"featured_media":17618,"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,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"En \u00e9tudiant de l'ivoire d'\u00e9l\u00e9phant, des chercheurs d\u00e9couvrent... de l'ADN de mammouth @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[33],"tags":[954,4195,6094,951,5697],"class_list":["post-17617","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archeologie","tag-adn","tag-elephant","tag-ivoire","tag-mammouth","tag-taille","wpcat-33-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/taille_mammouth-elephant.jpg?fit=542%2C226&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4A9","jetpack-related-posts":[{"id":6194,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-monde-ressuscite\/","url_meta":{"origin":17617,"position":0},"title":"Un Monde ressuscit\u00e9","author":"Admin","date":"28 avril 2015","format":false,"excerpt":"Nous venons de franchir un pas historique. Verrons-nous bient\u00f4t ressusciter les mammouths laineux, avec leurs d\u00e9fenses impressionnantes et leur pelage \u00e9pais\u2009? Esp\u00e8ce disparue depuis 4 000 ans, son ADN a \u00e9t\u00e9 r\u00e9cemment reconstitu\u00e9. Seulement 80 % de son g\u00e9nome avaient pu \u00eatre retrouv\u00e9s par des scientifiques en 2008. Une \u00e9tude,\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":716,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-mammouth-renait-de-ses-cendres\/","url_meta":{"origin":17617,"position":1},"title":"Le mammouth rena\u00eet de ses cendres","author":"Admin","date":"15 janvier 2012","format":false,"excerpt":"On en entend parler depuis des ann\u00e9es mais, cette fois, l\u2019annonce est officielle : d\u2019ici cinq ans, un mammouth laineux devrait voir le jour, \u00ab ressuscit\u00e9 \u00bb par des scientifiques japonais! Akira Iritani, g\u00e9n\u00e9ticien et professeur \u00e0 l\u2019universit\u00e9 de Kyoto, s\u2019appr\u00eate \u00e0 cloner ce pachyderme en utilisant des cellules de\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":18668,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-cellules-de-mammouth-laineux-ravivees-28-000-ans-apres\/","url_meta":{"origin":17617,"position":2},"title":"Des cellules de mammouth laineux \u00ab raviv\u00e9es \u00bb 28.000 ans apr\u00e8s","author":"Admin","date":"22 avril 2019","format":false,"excerpt":"Des chercheurs japonais sont parvenus \u00e0 restaurer quelques fonctions de noyaux de cellules de mammouth laineux en les implantant dans des ovocytes de souris. Une \u00e9ni\u00e8me tentative qui vise \u00e0 ressusciter cette esp\u00e8ce embl\u00e9matique. Le retour du mammouth est un mythe toujours bien vivace et les scientifiques n'en finissent plus\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mammouth.jpeg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":14792,"url":"https:\/\/www.laterredufutur.com\/accueil\/dici-2-ans-un-mammouth-laineux-reviendra-a-la-vie\/","url_meta":{"origin":17617,"position":3},"title":"D&rsquo;ici 2 ans, un mammouth laineux reviendra \u00e0 la vie","author":"Admin","date":"5 mars 2017","format":false,"excerpt":"Ressusciter des esp\u00e8ces disparues depuis des milliers d'ann\u00e9es en utilisant leur ADN pour f\u00e9conder des embryons en laboratoire\u2026 Non, ce n'est pas du synopsis d'une c\u00e9l\u00e8bre saga adapt\u00e9e par Steven Sielberg au cin\u00e9ma dont il est question ici, mais bien d'une exp\u00e9rience qui est en train d'avoir lieu, en ce\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/mammouth.jpg?fit=645%2C320&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/mammouth.jpg?fit=645%2C320&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/mammouth.jpg?fit=645%2C320&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":10320,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-homme-compte-faire-renaitre-des-mammouth-dici-7-ans\/","url_meta":{"origin":17617,"position":4},"title":"Un homme compte faire rena\u00eetre des mammouth d&rsquo;ici 7 ans","author":"Admin","date":"3 janvier 2016","format":false,"excerpt":"Biologiste mol\u00e9culaire \u00e0 l\u2019Universit\u00e9 d\u2019Harvard aux \u00c9tats-Unis, Georges Church compte faire rena\u00eetre une esp\u00e8ce \u00e9teinte de la surface de la Terre il y a 4 000 ans, le mammouth, et ce d\u2019ici \u00e0 sept ans seulement par le biais d\u2019une m\u00e9thode controvers\u00e9e. Le projet du biologiste mol\u00e9culaire Georges Church est\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/mammouth.jpg?fit=645%2C320&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/mammouth.jpg?fit=645%2C320&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/01\/mammouth.jpg?fit=645%2C320&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":24602,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-foret-prehistorique-au-nord-du-groenland\/","url_meta":{"origin":17617,"position":5},"title":"Une for\u00eat pr\u00e9historique au nord du Groenland !","author":"Admin","date":"18 d\u00e9cembre 2022","format":false,"excerpt":"Au nord du Groenland, une for\u00eat pr\u00e9historique abritait des mastodontes, des rennes, des li\u00e8vres et une v\u00e9g\u00e9tation abondante. D\u00e8s 2006, Eske Willerslev et les membres de son laboratoire se sont aventur\u00e9s dans le nord du Groenland avec une foreuse pour extraire des carottes de s\u00e9diments de la formation Kap K\u00f8benhavn.\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/foret-suede.jpg?fit=960%2C638&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/foret-suede.jpg?fit=960%2C638&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/foret-suede.jpg?fit=960%2C638&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/foret-suede.jpg?fit=960%2C638&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/17617","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=17617"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/17617\/revisions"}],"predecessor-version":[{"id":17619,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/17617\/revisions\/17619"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/17618"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=17617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=17617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=17617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}