{"id":90,"date":"2017-03-01T12:21:16","date_gmt":"2017-03-01T17:21:16","guid":{"rendered":"http:\/\/www.namonarchs.org\/?page_id=90"},"modified":"2018-03-09T12:17:44","modified_gmt":"2018-03-09T17:17:44","slug":"a-propos","status":"publish","type":"page","link":"https:\/\/www.namonarchs.org\/fr\/a-propos\/","title":{"rendered":"Du monarque"},"content":{"rendered":"<div class=\"about-species\">\n<div class=\"left\">\n<h3 class=\"headline-primary--grouped\">Le papillon monarque (<em>Danaus plexippus<\/em>) est une esp\u00e8ce migratrice de l\u2019Am\u00e9rique du Nord<\/h3>\n<p class=\"headline-secondary--grouped\">qui emprunte deux couloirs de migration. Au printemps, les papillons de la population de l\u2019Est quittent leur habitat d\u2019hivernage dans les for\u00eats d\u2019oyamels du centre du Mexique et se dirigent vers le nord-est jusqu\u2019\u00e0 leur habitat de reproduction dans le nord du Mexique, le Midwest des \u00c9tats-Unis et le sud du Canada; lors de leur migration automnale, ils s\u2019envolent vers le sud.<\/p>\n<p>Les populations de l\u2019Ouest (\u00e0 l\u2019ouest des Rocheuses), plus petites, migrent le long de la c\u00f4te de la Californie o\u00f9 elles hivernent.<\/p>\n<p>Durant ce ph\u00e9nom\u00e8ne de migration unique auquel participent plusieurs g\u00e9n\u00e9rations, les monarques ont besoin d\u2019ascl\u00e9piades (<em>Asclepias<\/em> sp.) pour se reproduire et se nourrir.<\/p>\n<p>Or, dans les zones agricoles, la majeure partie de leur habitat de reproduction et d\u2019alimentation a \u00e9t\u00e9 d\u00e9truit; les mesures de conservation visant la cr\u00e9ation, le r\u00e9tablissement ou la mise en valeur de cet habitat sur les terres agricoles pr\u00e9sentent un grand potentiel pour la conservation des monarques.<\/p>\n<\/div>\n<div class=\"right\">\n<h3 class=\"headline-primary--grouped\">Cycle de vie<\/h3>\n<p>La ponte des \u0153ufs est la premi\u00e8re \u00e9tape de la vie d\u2019un monarque. Dans la nature, une femelle peut pondre entre 300 et 400 \u0153ufs sur une p\u00e9riode de quelques semaines. Les \u0153ufs se transforment en chenilles (larves), qui se nourrissent exclusivement d\u2019ascl\u00e9piade. Les chenilles grossissent rapidement; au bout de 9 \u00e0 15 jours, leur masse est multipli\u00e9e par presque 2 700. Les chenilles passent par cinq mues successives (qu\u2019on appelle aussi stades larvaires).<\/p>\n<p>Elles quittent g\u00e9n\u00e9ralement l\u2019ascl\u00e9piade durant le cinqui\u00e8me stade, \u00e0 la recherche d\u2019un endroit sur\u00e9lev\u00e9 plus discret, o\u00f9 elles peuvent se nymphoser. On les qualifie de nymphes (ou de chrysalides) apr\u00e8s qu\u2019elles se sont extraites du squelette de la chenille. Au bout de 8 \u00e0 15 jours, le papillon adulte sort de l\u2019enveloppe de la chrysalide, et il est pr\u00eat \u00e0 se reproduire. Une fois f\u00e9cond\u00e9e, la femelle part \u00e0 la recherche d\u2019ascl\u00e9piades pour pondre ses \u0153ufs. (Adapted from <a href=\"http:\/\/www.mission-monarch.org\/monarchs-biology\/life-cycle\/\">Mission monarch<\/a>).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6570\" src=\"http:\/\/www.namonarchs.org\/wp-content\/uploads\/2017\/12\/Life-cycle-mp-fr.svg\" alt=\"\" width=\"1\" height=\"1\" \/><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le papillon monarque (Danaus plexippus) est une esp\u00e8ce migratrice de l\u2019Am\u00e9rique du Nord qui emprunte deux couloirs de migration. Au printemps, les papillons de la population de l\u2019Est quittent leur habitat d\u2019hivernage dans les for\u00eats d\u2019oyamels du centre du Mexique et se dirigent vers le nord-est jusqu\u2019\u00e0 leur habitat de reproduction dans le nord du [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6480,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-about.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-90","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Du monarque - Bo\u00eete \u00e0 outils pour la conservation du papillon monarque<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.namonarchs.org\/fr\/a-propos\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Du monarque - Bo\u00eete \u00e0 outils pour la conservation du papillon monarque\" \/>\n<meta property=\"og:description\" content=\"Le papillon monarque (Danaus plexippus) est une esp\u00e8ce migratrice de l\u2019Am\u00e9rique du Nord qui emprunte deux couloirs de migration. 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