{"id":1092,"date":"2021-08-18T23:10:33","date_gmt":"2021-08-18T23:10:33","guid":{"rendered":"https:\/\/www.africa-press.net\/sao-tome-e-principe\/?p=1092"},"modified":"2021-08-18T23:07:50","modified_gmt":"2021-08-18T23:07:50","slug":"crabe-bleu-invasion-biologique-en-mediterranee","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/sao-tome-e-principe\/toutes-les-actualites\/crabe-bleu-invasion-biologique-en-mediterranee","title":{"rendered":"Crabe bleu : invasion biologique en M\u00e9diterran\u00e9e"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong><a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a> &#8211; <a href=\"https:\/\/www.africa-press.net\/sao-tome-e-principe\">S\u00e3o Tom\u00e9 e Pr\u00edncipe<\/a>. <\/strong><\/span><b>C\u2019est l\u2019histoire d\u2019un crabe am\u00e9ricain qui envahit la M\u00e9diterran\u00e9e, et il est loin d\u2019\u00eatre le seul. Plusieurs esp\u00e8ces venues d\u2019ailleurs menacent aujourd&rsquo;hui la biodiversit\u00e9. Comment limiter ce ph\u00e9nom\u00e8ne ?<\/b><\/p>\n<p>Lorsqu\u2019ils quittent un port, les ferries ou les cargos remplissent leur cale avec de l\u2019eau pour maintenir leur \u00e9quilibre &#8211; on appelle cela le ballast. Mais il embarquent aussi par la m\u00eame occasion algues, micro-organismes ou encore \u0153ufs de poisson : bref, tout un \u00e9cosyst\u00e8me qui sera rejet\u00e9 dans le port d\u2019arriv\u00e9e. Le crabe bleu est l&rsquo;une de ces 900 esp\u00e8ces voyageuses qui ont \u00e9lu domicile en M\u00e9diterran\u00e9e, au d\u00e9triment de la biodiversit\u00e9 locale. Avec le changement climatique et une mer qui se r\u00e9chauffe, il prolif\u00e8re.<\/p>\n<p><b>Les p\u00eacheurs \u00e0 la rescousse<\/b><\/p>\n<p>Le crabe bleu n&rsquo;a qu&rsquo;un \u201csuper pr\u00e9dateur\u201d, explique Christophe Guinot, p\u00eacheur dans la lagune de Leucate : il s&rsquo;agit du poulpe. Mais cet animal mange tout sur son passage et laisse derri\u00e8re lui un d\u00e9sert de biodiversit\u00e9. Une femelle peut porter plus de 2 millions d\u2019\u0153ufs et se reproduire plusieurs fois par an. Si rien n\u2019est fait pour les retirer, une v\u00e9ritable colonisation est en marche. Et si nous, les hommes, mangions le crabe bleu, comme c\u2019est le cas aux \u00c9tats-Unis ? L\u2019arme de lutte principale serait alors la p\u00eache.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; S\u00e3o Tom\u00e9 e Pr\u00edncipe. C\u2019est l\u2019histoire d\u2019un crabe am\u00e9ricain qui envahit la M\u00e9diterran\u00e9e, et il est loin d\u2019\u00eatre le seul. Plusieurs esp\u00e8ces venues d\u2019ailleurs menacent aujourd&rsquo;hui la biodiversit\u00e9. Comment limiter ce ph\u00e9nom\u00e8ne ? Lorsqu\u2019ils quittent un port, les ferries ou les cargos remplissent leur cale avec de l\u2019eau pour maintenir leur \u00e9quilibre &#8211; [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":1091,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,20,10],"tags":[36,55,108,105,104,111,106,109,107,56,110],"class_list":["post-1092","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-top-nouvelles","category-toutes-les-actualites","tag-africa-press","tag-africa-press-sao-tome-e-principe","tag-biodiversite","tag-ecologie","tag-environnement","tag-maritime","tag-mer-mediterranee","tag-oceans","tag-peche","tag-sao-tome-e-principe","tag-transports"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Crabe bleu : invasion biologique en M\u00e9diterran\u00e9e - S\u00e3o Tom\u00e9 e Pr\u00edncipe<\/title>\n<meta name=\"description\" content=\"C\u2019est l\u2019histoire d\u2019un crabe am\u00e9ricain qui envahit la M\u00e9diterran\u00e9e, et il est loin d\u2019\u00eatre le seul. 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