{"id":44768,"date":"2026-10-03T06:33:02","date_gmt":"2026-10-03T04:33:02","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=44768"},"modified":"2026-10-07T09:55:53","modified_gmt":"2026-10-07T07:55:53","slug":"le-crabe-bleu-une-menace-sous-surveillance","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2026\/10\/03\/le-crabe-bleu-une-menace-sous-surveillance\/","title":{"rendered":"Le crabe bleu, une menace sous surveillance"},"content":{"rendered":"<div class=\"paragraph\">\n<p>M<i>es travaux portent sur les esp\u00e8ces marines invasives et leurs interactions avec les \u00e9cosyst\u00e8mes et les activit\u00e9s humaines. J\u2019anime deux conf\u00e9rences sur le crabe bleu lors du Village des sciences \u00e0 Marseille<\/i><i>\u00a0<\/i><i>\u00bb, <\/i>explique le chercheur, pour qui <i>\u00ab<\/i><i>\u00a0<\/i><i>la f\u00eate de la science est un extraordinaire moyen de rencontrer le grand public, diff\u00e9rent des initi\u00e9s habituels<\/i><i>\u00a0<\/i><i>\u00bb.<\/i><\/p>\n<p>Le concept de r\u00e9silience du syst\u00e8me alimentaire est longuement abord\u00e9. Mais que signifie-t-il r\u00e9ellement ? Pour Guillaume Marchessaux, <i>\u00ab<\/i><i>\u00a0<\/i><i>l\u2019id\u00e9e est de trouver des moyens de pouvoir maintenir une alimentation durable dans le temps. L\u2019alimentation doit int\u00e9grer le d\u00e9r\u00e8glement climatique. En mer, on sait qu\u2019il y a des populations de poissons qui sont en crise, en taille et en nombre, comme les sardines. L\u2019id\u00e9e est de faire conna\u00eetre des esp\u00e8ces aussi bonnes, et moins ch\u00e8res, car moins demand\u00e9es. Il faut \u00eatre pr\u00eat \u00e0 s\u2019adapter, \u00eatre ouvert d\u2019esprit. C\u2019est \u00e7a, la r\u00e9silience<\/i><i>\u00a0<\/i><i>\u00bb. <\/i>Le crabe bleu, esp\u00e8ce invasive arriv\u00e9e notamment par les eaux de ballast des navires, est un cas particulier car son impact s\u2019\u00e9tend \u00e0 tout un socio\u00e9-cosyst\u00e8me. <i>\u00ab<\/i><i>\u00a0<\/i><i>C\u2019est une esp\u00e8ce qui va impacter l\u2019activit\u00e9 de p\u00eache, perturber les actions de gestion de la biodiversit\u00e9 et c\u2019un vrai probl\u00e8me environnemental. \u00bb <\/i><\/p>\n<p>Il s\u2019agit du plus grand crustac\u00e9 des milieux lagunaires m\u00e9diterran\u00e9ens. Il ne poss\u00e8de pratiquement aucun pr\u00e9dateur naturel, hormis l\u2019homme. <i>\u00ab<\/i><i>\u00a0<\/i><i>Une femelle peut pondre 4<\/i><i>\u00a0<\/i><i>millions d\u2019\u0153ufs, avec un taux de survie de 4%. C\u2019est \u00e9norme. Il faut absolument qu\u2019on le p\u00eache pour arriver \u00e0 prot\u00e9ger le reste.<\/i><i>\u00a0<\/i><i>\u00bb <\/i>Le r\u00e9guler passe par sa consommation, mais pas uniquement. <i>\u00ab<\/i><i>\u00a0<\/i><i>Il est riche en chitine, on peut imaginer cibler l\u2019industrie pharmaceutique, mais aussi l\u2019alimentation pour animaux.<\/i><i>\u00a0<\/i><i>\u00bb<\/i><\/p>\n<\/p><\/div>\n<div class=\"paragraph\">\n<p><i>Espace Bargemon \u00e0 Marseille (2<\/i><i><sup>e<\/sup><\/i><i>), les 10 et 11<\/i><i>\u00a0<\/i><i>octobre, conf\u00e9rence<\/i><i>\u00a0<\/i><i>: \u00ab<\/i><i>\u00a0<\/i><i>Et si on mangeait du crabe bleu pour le r\u00e9guler<\/i><i>\u00a0<\/i><i>?<\/i><i>\u00a0<\/i><i>\u00bb<\/i><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"Mes travaux portent sur les esp&egrave;ces marines invasives et leurs interactions avec les &eacute;cosyst&egrave;mes et les activit&eacute;s humaines. J&rsquo;anime deux conf&eacute;rences sur le crabe bleu lors du Village des sciences &agrave; &#8230;","protected":false},"author":1,"featured_media":44769,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3926,3925,20],"tags":[182,952,2477,1550,2483,515,6545,1693,2731,5339,3967,298,222,562,6005,353,1342],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-44768","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil-merge","category-accueil-third","category-societe","tag-animaux","tag-conferences","tag-crabe-bleu","tag-dereglement-climatique","tag-fete-de-la-science","tag-gestion","tag-guillaume-marchessaux","tag-ird","tag-la-fete-de-la-science","tag-mio","tag-peche","tag-poissons","tag-region-sud-paca","tag-resilience","tag-sardines","tag-sciences","tag-stocks","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/44768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/comments?post=44768"}],"version-history":[{"count":1,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/44768\/revisions"}],"predecessor-version":[{"id":44770,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/44768\/revisions\/44770"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/44769"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=44768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=44768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=44768"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=44768"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=44768"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=44768"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=44768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}