{"id":11213,"date":"2022-09-21T16:38:43","date_gmt":"2022-09-21T14:38:43","guid":{"rendered":"https:\/\/www.culturalusa.com\/news\/?p=11213"},"modified":"2022-09-21T16:40:15","modified_gmt":"2022-09-21T14:40:15","slug":"australie-230-cetaces-sechouent-sur-une-plage-la-moitie-dentre-eux-presumes-morts","status":"publish","type":"post","link":"https:\/\/www.culturalusa.com\/news\/technologie\/australie-230-cetaces-sechouent-sur-une-plage-la-moitie-dentre-eux-presumes-morts\/","title":{"rendered":"Australie : 230 c\u00e9tac\u00e9s s&rsquo;\u00e9chouent sur une plage, la moiti\u00e9 d&rsquo;entre eux pr\u00e9sum\u00e9s morts"},"content":{"rendered":"<p>Sc\u00e8ne de d\u00e9solation en Australie o\u00f9 quelque <strong>230 dauphins-pilotes, aussi appel\u00e9s globic\u00e9phales<\/strong>, ont \u00e9t\u00e9 retrouv\u00e9s mercredi \u00e9chou\u00e9s sur la c\u00f4te ouest de la Tasmanie, et sont pr\u00e9sum\u00e9s morts pour pr\u00e8s de la moiti\u00e9 d&rsquo;entre eux.<\/p>\n<p>Des images a\u00e9riennes ont r\u00e9v\u00e9l\u00e9 que des dizaines de mammif\u00e8res marins \u00e9taient dispers\u00e9s le long d&rsquo;une vaste plage de sable au contact des eaux froides de l&rsquo;oc\u00e9an Austral.<\/p>\n<blockquote><p>Des habitants couvraient les animaux survivants avec des couvertures et les aspergeaient de seaux d&rsquo;eau pour les maintenir en vie, tandis que d&rsquo;autres c\u00e9tac\u00e9s \u00e0 proximit\u00e9 tentaient en vain de se d\u00e9gager, et que d&rsquo;autres gisaient morts.<\/p><\/blockquote>\n<p>Les c\u00e9tac\u00e9s se sont \u00ab\u00a0\u00e9chou\u00e9s pr\u00e8s de Macquarie Harbour\u00a0\u00bb, a d\u00e9clar\u00e9 le minist\u00e8re des Ressources naturelles et de l&rsquo;Environnement de l&rsquo;Etat de Tasmanie.<\/p>\n<p>\u00ab\u00a0Il semble qu&rsquo;environ la moiti\u00e9 des animaux soient vivants\u00a0\u00bb, a-t-il ajout\u00e9.<\/p>\n<p>Les autorit\u00e9s ont d\u00e9clar\u00e9 que des experts en conservation marine ainsi qu&rsquo;une \u00e9quipe disposant de mat\u00e9riel de sauvetage \u00e0 destination des c\u00e9tac\u00e9s \u00e9taient en route vers la zone.<\/p>\n<p>Ils tenteront de remettre \u00e0 flot les animaux suffisamment capables de survivre et transporteront probablement les carcasses vers le large, pour \u00e9viter d&rsquo;attirer les requins dans la zone.<\/p>\n<blockquote><p>Il y a presque deux ans jour pour jour, la zone a \u00e9t\u00e9 le th\u00e9\u00e2tre d&rsquo;un autre \u00e9chouage massif, impliquant pr\u00e8s de 500 dauphins-pilotes \u00e9chou\u00e9s.<\/p><\/blockquote>\n<p>Plus de 300 d&rsquo;entre eux sont alors morts, malgr\u00e9 les efforts de dizaines de b\u00e9n\u00e9voles qui ont lutt\u00e9 pendant des jours dans les eaux glaciales de la Tasmanie pour lib\u00e9rer les animaux.<\/p>\n<h3>Signaux de d\u00e9tresse<\/h3>\n<p>Les raisons de ces importants \u00e9chouages ne sont pas totalement connues.<\/p>\n<p>Des chercheurs ont sugg\u00e9r\u00e9 qu&rsquo;ils pourraient \u00eatre caus\u00e9s par des groupes de c\u00e9tac\u00e9s qui s&rsquo;\u00e9gareraient apr\u00e8s s&rsquo;\u00eatre nourris trop pr\u00e8s de la c\u00f4te.<\/p>\n<p>Les globic\u00e9phales \u00e9tant des animaux tr\u00e8s sociables, ils peuvent suivre les membres de leur groupe qui s&rsquo;\u00e9garent et se retrouvent en danger.<\/p>\n<p>Cela se produit parfois lorsque des animaux \u00e2g\u00e9s, malades ou bless\u00e9s nagent vers le rivage et que d&rsquo;autres c\u00e9tac\u00e9s du groupe les suivent, tentant de r\u00e9pondre aux signaux de d\u00e9tresse des animaux pi\u00e9g\u00e9s.<\/p>\n<p>D&rsquo;autres chercheurs estiment que les plages en pente douce &#8211; comme celles que l&rsquo;on trouve en Tasmanie &#8211; perturbent le sonar des dauphins-pilotes et leur font croire qu&rsquo;ils se trouvent au large.<\/p>\n<p>Cet \u00e9v\u00e9nement est survenu quelques heures apr\u00e8s qu&rsquo;une dizaine de jeunes cachalots ont \u00e9t\u00e9 retrouv\u00e9s morts, eux aussi \u00e9chou\u00e9s, sur l&rsquo;\u00eele King, entre la Tasmanie et l&rsquo;Australie continentale.<\/p>\n<p>La cause de la mort des cachalots pourrait \u00eatre une \u00ab\u00a0m\u00e9saventure\u00a0\u00bb, comme l&rsquo;\u00e9voque le biologiste Kris Carlyon de l&rsquo;agence de conservation de cet Etat insulaire aupr\u00e8s du journal local Mercury.<\/p>\n<p>C&rsquo;est \u00ab\u00a0la raison la plus courante des \u00e9chouages\u00a0\u00bb, d\u00e9taille-t-il. \u00ab\u00a0Ils ont pu chercher de la nourriture pr\u00e8s du rivage (&#8230;) ils ont peut-\u00eatre \u00e9t\u00e9 pris \u00e0 mar\u00e9e basse\u00a0\u00bb, selon M. Carlyon.<\/p>\n<h3>\u00ab\u00a0C&rsquo;est la th\u00e9orie pour l&rsquo;instant\u00a0\u00bb<\/h3>\n<p>Les \u00e9chouages sont \u00e9galement fr\u00e9quents en Nouvelle-Z\u00e9lande, pays voisin de l&rsquo;Australie.<\/p>\n<p>Quelque 300 animaux y sont concern\u00e9s chaque ann\u00e9e, selon les donn\u00e9es officielles, et il n&rsquo;est pas rare qu&rsquo;un m\u00eame \u00e9chouage implique des groupes de 20 \u00e0 50 dauphins-pilotes.<\/p>\n<p>Un seul \u00e9chouage peut \u00e9galement concerner plusieurs centaines d&rsquo;animaux lorsqu&rsquo;un groupe important de mammif\u00e8res marins est impliqu\u00e9, comme cela a \u00e9t\u00e9 le cas en 2017 lorsque 700 dauphins-pilotes se sont \u00e9chou\u00e9s ensemble sur la c\u00f4te n\u00e9o-z\u00e9landaise.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sc\u00e8ne de d\u00e9solation en Australie o\u00f9 quelque 230 dauphins-pilotes, aussi appel\u00e9s globic\u00e9phales, ont \u00e9t\u00e9 retrouv\u00e9s mercredi \u00e9chou\u00e9s sur la c\u00f4te ouest de la Tasmanie, et sont pr\u00e9sum\u00e9s morts pour pr\u00e8s de la moiti\u00e9 d&rsquo;entre eux. Des images a\u00e9riennes ont r\u00e9v\u00e9l\u00e9 que des dizaines de mammif\u00e8res marins \u00e9taient dispers\u00e9s le long d&rsquo;une vaste plage de sable [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11214,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[2457,2458,208,2459,2460],"class_list":["post-11213","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologie","tag-230-cetaces","tag-australie","tag-climat","tag-dauphins-pilotes","tag-globicephales"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Sc\u00e8ne de d\u00e9solation en Australie o\u00f9 quelque 230 dauphins-pilotes, aussi appel\u00e9s globic\u00e9phales, ont \u00e9t\u00e9 retrouv\u00e9s mercredi \u00e9chou\u00e9s sur la c\u00f4te ouest de la Tasmanie, et sont pr\u00e9sum\u00e9s morts pour pr\u00e8s de la moiti\u00e9 d&#039;entre eux. Des images a\u00e9riennes ont r\u00e9v\u00e9l\u00e9 que des dizaines de mammif\u00e8res marins \u00e9taient dispers\u00e9s le long d&#039;une vaste plage de sable\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Team\"\/>\n\t<meta name=\"keywords\" content=\"230 c\u00e9tac\u00e9s,australie,climat,dauphins-pilotes,globic\u00e9phales\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.culturalusa.com\/news\/technologie\/australie-230-cetaces-sechouent-sur-une-plage-la-moitie-dentre-eux-presumes-morts\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.9\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Cultura Lusa - Revue de Presse\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Australie : 230 c\u00e9tac\u00e9s s\u2019\u00e9chouent sur une plage, la moiti\u00e9 d\u2019entre eux pr\u00e9sum\u00e9s morts | Magazine Cultura Lusa\" \/>\n\t\t<meta property=\"og:description\" content=\"Sc\u00e8ne de d\u00e9solation en Australie o\u00f9 quelque 230 dauphins-pilotes, aussi appel\u00e9s globic\u00e9phales, ont \u00e9t\u00e9 retrouv\u00e9s mercredi \u00e9chou\u00e9s sur la c\u00f4te ouest de la Tasmanie, et sont pr\u00e9sum\u00e9s morts pour pr\u00e8s de la moiti\u00e9 d&#039;entre eux. Des images a\u00e9riennes ont r\u00e9v\u00e9l\u00e9 que des dizaines de mammif\u00e8res marins \u00e9taient dispers\u00e9s le long d&#039;une vaste plage de sable\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.culturalusa.com\/news\/technologie\/australie-230-cetaces-sechouent-sur-une-plage-la-moitie-dentre-eux-presumes-morts\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/www.culturalusa.com\/news\/wp-content\/uploads\/2022\/09\/230-cetaces-echoues-en-australie.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/www.culturalusa.com\/news\/wp-content\/uploads\/2022\/09\/230-cetaces-echoues-en-australie.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-09-21T14:38:43+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-09-21T14:40:15+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Australie : 230 c\u00e9tac\u00e9s s\u2019\u00e9chouent sur une plage, la moiti\u00e9 d\u2019entre eux pr\u00e9sum\u00e9s morts | Magazine Cultura Lusa\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Sc\u00e8ne de d\u00e9solation en Australie o\u00f9 quelque 230 dauphins-pilotes, aussi appel\u00e9s globic\u00e9phales, ont \u00e9t\u00e9 retrouv\u00e9s mercredi \u00e9chou\u00e9s sur la c\u00f4te ouest de la Tasmanie, et sont pr\u00e9sum\u00e9s morts pour pr\u00e8s de la moiti\u00e9 d&#039;entre eux. 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