{"id":19082,"date":"2022-01-17T16:49:13","date_gmt":"2022-01-17T16:49:13","guid":{"rendered":"https:\/\/www.africa-press.net\/niger\/politique\/la-plus-grande-colonie-de-reproduction-de-poissons-des-glaces-decouverte-en-antarctique"},"modified":"2022-01-17T17:24:45","modified_gmt":"2022-01-17T17:24:45","slug":"la-plus-grande-colonie-de-reproduction-de-poissons-des-glaces-decouverte-en-antarctique","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/la-plus-grande-colonie-de-reproduction-de-poissons-des-glaces-decouverte-en-antarctique","title":{"rendered":"La plus grande colonie de reproduction de poissons des glaces d\u00e9couverte en Antarctique"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Niger. <\/strong><\/span>Une concentration sans pr\u00e9c\u00e9dent de nids de poissons des glaces a \u00e9t\u00e9 d\u00e9couverte dans la mer de Weddel, selon Current Biology. Il s\u2019agit du site le plus important de ce type jamais d\u00e9crit par les chercheurs.<\/p>\n<p>Dans un rapport publi\u00e9 ce 13 janvier dans la revue am\u00e9ricaine Current Biology, les scientifiques font part d\u2019une d\u00e9couverte importante faite en mer de Weddel, pr\u00e8s des c\u00f4tes antarctiques.<\/p>\n<p>\u00c0 300 m\u00e8tres de profondeur, les auteurs ont pu observer une colonie de nidification de poissons des glaces qui s\u2019\u00e9tale sur 240 kilom\u00e8tres carr\u00e9s de fonds marins.<\/p>\n<p>Chacun des nids, qui se situent tous les 25 centim\u00e8tres, compterait en moyenne 1.700 \u0153ufs et est prot\u00e9g\u00e9 par un sp\u00e9cimen adulte. Au total, leur nombre est \u00e9valu\u00e9 \u00e0 60 millions, la biomasse de toute la colonie pouvant atteindre 60.000 tonnes.<\/p>\n<p>Selon les scientifiques, il s\u2019agit de la zone de reproduction la plus \u00e9tendue jamais recens\u00e9e \u00e0 n\u2019importe quelle profondeur. Les poissons des glaces vivent uniquement dans les eaux froides de l\u2019Antarctique et au sud de l\u2019Am\u00e9rique du Sud et sont dot\u00e9s d\u2019\u00e9normes c\u0153urs et d\u2019un sang transparent \u00e0 cause du manque de globules rouges et d\u2019h\u00e9moglobine.<\/p>\n<p>Les auteurs du rapport esp\u00e8rent que cette d\u00e9couverte exceptionnelle et le r\u00f4le biologique que joue cette colonie dans l\u2019\u00e9cosyst\u00e8me local pourraient favoriser la cr\u00e9ation d\u2019une aire prot\u00e9g\u00e9e r\u00e9gionale dans l\u2019oc\u00e9an Austral sous l\u2019\u00e9gide de la Convention sur la conservation de la faune et de la flore marines de l\u2019Antarctique (CCAMLR).<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/niger\">Niger<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Niger. Une concentration sans pr\u00e9c\u00e9dent de nids de poissons des glaces a \u00e9t\u00e9 d\u00e9couverte dans la mer de Weddel, selon Current Biology. Il s\u2019agit du site le plus important de ce type jamais d\u00e9crit par les chercheurs. Dans un rapport publi\u00e9 ce 13 janvier dans la revue am\u00e9ricaine Current Biology, les scientifiques font [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":19081,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[55,60,29],"class_list":["post-19082","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-niger","tag-niger"],"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>La plus grande colonie de reproduction de poissons des glaces d\u00e9couverte en Antarctique - niger<\/title>\n<meta name=\"description\" content=\"Une concentration sans pr\u00e9c\u00e9dent de nids de poissons des glaces a 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