{"id":29260,"date":"2022-03-16T15:01:00","date_gmt":"2022-03-16T14:01:00","guid":{"rendered":"https:\/\/naturzentrum-thurauen.ch\/?p=29260"},"modified":"2022-10-06T10:54:32","modified_gmt":"2022-10-06T08:54:32","slug":"les-anguilles-des-creatures-fascinantes-et-menacees","status":"publish","type":"post","link":"https:\/\/naturzentrum-thurauen.ch\/fr\/les-anguilles-des-creatures-fascinantes-et-menacees\/","title":{"rendered":"Les anguilles \u2013 des cr\u00e9atures fascinantes et menac\u00e9es"},"content":{"rendered":"\n

Triste spectacle au bord du Rhin<\/strong><\/p>\n\n\n\n

L\u2019anguille d\u2019Europe (Anguilla anguilla) est menac\u00e9e de disparition \u2013 notamment \u00e0 cause des dangers qu\u2019elle rencontre au cours de sa migration. Sur son long trajet jusqu\u2019aux eaux o\u00f9 elle pond, l\u2019anguille doit franchir plusieurs centrales hydro\u00e9lectriques, souvent avec des cons\u00e9quences mortelles. C\u2019est ainsi que des anguilles mortes \u00e9chouent r\u00e9guli\u00e8rement \u00e0 proximit\u00e9 du centre nature Thurauen tous les ans en hiver, la principale p\u00e9riode o\u00f9 les anguilles prennent le d\u00e9part.<\/p>\n\n\n\n

\"\"
Anguille morte au bord du vieux Rhin.<\/em><\/figcaption><\/figure>\n\n\n\n
<\/div>\n\n\n\n

Un parcours long et dangereux<\/strong><\/p>\n\n\n\n

L\u2019anguille parcourt un trajet de 6000 kilom\u00e8tres. Elle na\u00eet dans la mer des Sargasses, pr\u00e8s de la Floride. Les jeunes anguilles partent pour une migration de plusieurs ann\u00e9es vers les eaux douces. D\u00e8s que l\u2019anguille atteint la maturit\u00e9 sexuelle, elle quitte les eaux douces pour repartir vers la mer des Sargasses, o\u00f9 les anguilles pondent avant de mourir. Malheureusement, une grande partie des anguilles ne parvient plus \u00e0 rejoindre la mer, car en raison de la forme de leur corps, elles passent \u00e0 travers les grilles des centrales hydro\u00e9lectriques. Il arrive ainsi qu\u2019elles descendent avec le courant dans les turbines des centrales, o\u00f9 elles sont mortellement bless\u00e9es.<\/p>\n\n\n\n

\"\"
Les \u00e9tapes de la migration de l\u2019anguille d\u2019Europe. (Source\u00a0: picture-alliance\/ dpa-infografik)<\/em><\/figcaption><\/figure>\n\n\n\n
<\/div>\n\n\n\n

Fascination de l\u2019anguille<\/strong><\/p>\n\n\n\n

Son cycle de vie n\u2019est pas le seul aspect fascinant de l\u2019anguille\u00a0: gr\u00e2ce \u00e0 certaines techniques de reptation, les anguilles sont capables de surmonter de nombreux obstacles\u00a0; ainsi, elles parviennent par exemple \u00e0 remonter les chutes du Rhin\u00a0! Et s’il arrive que le cours d\u2019eau soit interrompu, les anguilles peuvent \u00e9galement effectuer de petits trajets \u00e0 terre sur le sol humide\u00a0; elles absorbent alors l\u2019oxyg\u00e8ne de l\u2019air par la peau.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le long du vieux Rhin, il arrive r\u00e9guli\u00e8rement que les promeneurs et promeneuses aper\u00e7oivent des anguilles mortes \u00e9chou\u00e9es. Elles ont \u00e9t\u00e9 mortellement bless\u00e9es par les turbines de la centrale hydro\u00e9lectrique et ne parviennent donc jamais \u00e0 leur but, la mer des Sargasses.<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[261],"tags":[],"class_list":["post-29260","post","type-post","status-publish","format-standard","hentry","category-flore-faune-suisse"],"_links":{"self":[{"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/posts\/29260","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/comments?post=29260"}],"version-history":[{"count":1,"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/posts\/29260\/revisions"}],"predecessor-version":[{"id":29267,"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/posts\/29260\/revisions\/29267"}],"wp:attachment":[{"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/media?parent=29260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/categories?post=29260"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/naturzentrum-thurauen.ch\/fr\/wp-json\/wp\/v2\/tags?post=29260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}