{"id":13704,"date":"2019-03-21T15:40:03","date_gmt":"2019-03-21T14:40:03","guid":{"rendered":"https:\/\/www.satt.fr\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/"},"modified":"2019-03-21T15:40:03","modified_gmt":"2019-03-21T14:40:03","slug":"actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science","status":"publish","type":"post","link":"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/","title":{"rendered":"acTTTus #1 de Toulouse Tech Transfer : des chercheurs toulousains publi\u00e9s dans \u00ab Science \u00bb"},"content":{"rendered":"<h4><strong>La c\u00e9l\u00e8bre revue scientifique <em>\u00ab\u00a0Science\u00a0\u00bb<\/em> s\u2019est fait l\u2019\u00e9cho r\u00e9cemment de r\u00e9sultats de recherche qui prouvent \u00e0 grande \u00e9chelle le processus de transmission d\u2019informations entre g\u00e9n\u00e9rations chez la drosophile. Des chercheurs du laboratoire \u00c9volution &amp; Diversit\u00e9 Biologique (UMR 5174, UPS\/CNRS\/IRD) et du Centre de Recherches sur la Cognition Animale (UPS\/CNRS) viennent de montrer que les drosophiles poss\u00e8dent toutes les capacit\u00e9s cognitives pour transmettre culturellement certaines informations d\u2019une g\u00e9n\u00e9ration \u00e0 l\u2019autre.<\/strong><\/h4>\n<p>L\u2019information qui est transmise au travers des g\u00e9n\u00e9rations ne se r\u00e9duit pas \u00e0 la seule information g\u00e9n\u00e9tique encod\u00e9e dans la s\u00e9quence de l\u2019ADN. Plusieurs chercheurs de cette \u00e9quipe soulignent, depuis plus de 10 ans, le fait qu\u2019il existe de tr\u00e8s nombreuses formes de transmission transg\u00e9n\u00e9rationnelle d\u2019informations qui participent au processus d\u2019adaptation et d\u2019\u00e9volution. En particulier, quand l\u2019information est apprise d\u2019autres individus, cela peut enclencher une transmission d\u2019informations entre g\u00e9n\u00e9rations, conduisant \u00e0 ce que l\u2019on appelle la transmission et l\u2019\u00e9volution culturelle. Le propre de la culture r\u00e9side dans la transmission d\u2019information entre g\u00e9n\u00e9rations par des processus purement sociaux. Gr\u00e2ce \u00e0 plusieurs processus de correction comme le conformisme (se comporter comme la majorit\u00e9) la variation entre individus peut \u00eatre transmise de mani\u00e8re stable sur de nombreuses g\u00e9n\u00e9rations.<\/p>\n<h4><strong>Conception d\u2019un dispositif exp\u00e9rimental innovant <\/strong><\/h4>\n<p>Afin de d\u00e9montrer ce processus chez la drosophile, les chercheurs ont d\u00e9velopp\u00e9 un dispositif hexagonal de d\u00e9monstration multiple (figure B) pour \u00e9tudier l\u2019apprentissage social (apprentissage \u00e0 partir de l\u2019observation du comportement des autres, qui peut impliquer par exemple de l\u2019imitation ou du copiage). Jusqu\u2019\u00e0 pr\u00e9sent de telles \u00e9tudes impliquant un grand nombre d\u2019individus ne pouvaient pas \u00eatre men\u00e9es car les chercheurs ne disposaient que de dispositifs artisanaux d\u2019observation o\u00f9 un seul individu pouvait observer le choix d\u2019un seul autre individu (figure A).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4288 \" src=\"https:\/\/www.toulouse-tech-transfer.com\/wp-content\/uploads\/2019\/02\/figure-a-300x221.png\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" srcset=\"https:\/\/www.toulouse-tech-transfer.com\/wp-content\/uploads\/2019\/02\/figure-a-300x221.png 300w, https:\/\/www.toulouse-tech-transfer.com\/wp-content\/uploads\/2019\/02\/figure-a.png 671w\" alt=\"\" width=\"355\" height=\"261\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4289 \" src=\"https:\/\/www.toulouse-tech-transfer.com\/wp-content\/uploads\/2019\/02\/figure-b-300x197.png\" sizes=\"auto, (max-width: 371px) 100vw, 371px\" srcset=\"https:\/\/www.toulouse-tech-transfer.com\/wp-content\/uploads\/2019\/02\/figure-b-300x197.png 300w, https:\/\/www.toulouse-tech-transfer.com\/wp-content\/uploads\/2019\/02\/figure-b.png 695w\" alt=\"\" width=\"371\" height=\"243\" \/><\/p>\n<p>L\u2019hexagone permet de montrer \u00e0 des femelles de drosophiles na\u00efves (appel\u00e9es femelles observatrices) mises dans l\u2019ar\u00e8ne centrale six d\u00e9monstrations comportementales simultan\u00e9es. Dans le cas de l\u2019\u00e9tude r\u00e9cemment publi\u00e9e, les observatrices sont soumises \u00e0 6 d\u00e9monstrations (une par compartiment p\u00e9riph\u00e9rique) d\u2019une femelle choisissant entre deux m\u00e2les de ph\u00e9notype contrast\u00e9. C\u2019est donc un dispositif permettant aux femelles observatrices au centre de d\u00e9tecter s\u2019il existe une pr\u00e9f\u00e9rence majoritaire dans la population.<\/p>\n<p>Gr\u00e2ce \u00e0 ce dispositif, les chercheurs ont ainsi pu d\u00e9montrer pour la premi\u00e8re fois que ce conformisme est tr\u00e8s fort puisque les femelles construisent une pr\u00e9f\u00e9rence \u00e9quivalente et forte pour les m\u00e2les majoritairement pr\u00e9f\u00e9r\u00e9s pendant les d\u00e9monstrations tant qu\u2019il y avait une majorit\u00e9 d\u00e9tectable parmi les d\u00e9monstratrices. Ce r\u00e9sultat tr\u00e8s surprenant sugg\u00e8re que les drosophiles, et donc probablement beaucoup d\u2019organismes, ont une grande capacit\u00e9 \u00e0 d\u00e9tecter une tendance majoritaire, ce qui ouvre d\u2019importantes perspectives en particulier en termes de transmission culturelle et d\u2019\u00e9mergence de traditions locales arbitraires.<\/p>\n<p>Le dispositif innovant de l\u2019hexagone pourrait int\u00e9resser les laboratoires de recherche du domaine, il est disponible par le biais d\u2019un contrat de transfert de mat\u00e9riel aupr\u00e8s de <a href=\"https:\/\/www.toulouse-tech-transfer.com\/contact\/\">Toulouse Tech Transfer<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La c\u00e9l\u00e8bre revue scientifique \u00ab\u00a0Science\u00a0\u00bb s\u2019est fait l\u2019\u00e9cho r\u00e9cemment de r\u00e9sultats de recherche qui prouvent \u00e0 grande \u00e9chelle le processus de transmission d\u2019informations entre g\u00e9n\u00e9rations chez la drosophile. Des chercheurs du laboratoire \u00c9volution &amp; Diversit\u00e9 Biologique (UMR 5174, UPS\/CNRS\/IRD) et du Centre de Recherches sur la Cognition Animale (UPS\/CNRS) viennent de montrer que les drosophiles [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":13703,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[567,568],"tags":[],"class_list":["post-13704","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-en","category-successstories-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>acTTTus #1 de Toulouse Tech Transfer : des chercheurs toulousains publi\u00e9s dans \u00ab Science \u00bb - R\u00e9seau SATT<\/title>\n<meta name=\"description\" content=\"SATT Toulouse Tech Transfer : des chercheurs toulousains publi\u00e9s dans \u00ab Science \u00bb\" \/>\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.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fabienne PELTIER\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/\"},\"author\":{\"name\":\"Fabienne PELTIER\",\"@id\":\"https:\/\/www.satt.fr\/en\/#\/schema\/person\/7166531471a862b0b8ca60c67293add7\"},\"headline\":\"acTTTus #1 de Toulouse Tech Transfer : des chercheurs toulousains publi\u00e9s dans \u00ab Science \u00bb\",\"datePublished\":\"2019-03-21T14:40:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/\"},\"wordCount\":574,\"image\":{\"@id\":\"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.satt.fr\/wp-content\/uploads\/2019\/03\/MoucheTTT.png\",\"articleSection\":[\"News\",\"Success Stories\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/\",\"url\":\"https:\/\/www.satt.fr\/en\/actttus-1-de-toulouse-tech-transfer-des-chercheurs-toulousains-publies-dans-science\/\",\"name\":\"acTTTus #1 de Toulouse Tech Transfer : des chercheurs toulousains publi\u00e9s dans \u00ab Science \u00bb - 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