{"id":3502,"date":"2013-12-21T16:15:12","date_gmt":"2013-12-21T14:15:12","guid":{"rendered":"http:\/\/wildtravel.ro\/bird\/becasseau-sanderling-calidris-alba\/"},"modified":"2023-12-28T20:06:30","modified_gmt":"2023-12-28T18:06:30","slug":"becasseau-sanderling-calidris-alba","status":"publish","type":"bird","link":"https:\/\/wildtravel.ro\/fr\/bird\/becasseau-sanderling-calidris-alba\/","title":{"rendered":"B\u00e9casseau sanderling (Calidris alba)"},"content":{"rendered":"<h1 align=\"justify\"><\/h1>\n<p>Le <strong>B\u00e9casseau sanderling<\/strong> (<em>Calidris alba<\/em>) est une esp\u00e8ce de limicoles appartenant \u00e0 la famille des Scolopacidae et \u00e0 la sous-famille des Calidridinae.<\/p>\n<p>Il passe l&rsquo;\u00e9t\u00e9 et niche dans les r\u00e9gions autour du cercle polaire arctique et migre sur de longues distances migrants hivernant jusqu&rsquo;en Am\u00e9rique du Sud, Europe du Sud, en Afrique et en Australie. Tr\u00e8s gr\u00e9gaire en hiver, il forme parfois de grands groupes dans les vasi\u00e8res c\u00f4ti\u00e8res ou sur les plages de sable fin.<img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-39780 alignright\" src=\"http:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/ab-300x145.jpg\" alt=\"\" width=\"492\" height=\"238\" srcset=\"https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/ab-300x145.jpg 300w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/ab-1024x496.jpg 1024w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/ab-768x372.jpg 768w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/ab-1536x744.jpg 1536w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/ab-2048x991.jpg 2048w\" sizes=\"(max-width: 492px) 100vw, 492px\" \/><\/p>\n<p>Une \u00e9tude sur ses r\u00e9ponses \u00e9cophysiologiques \u00e0 l&rsquo;environnement d&rsquo;hivernage faite sous 4 types de sites situ\u00e9s \u00e0 des latitudes diff\u00e9rentes (New Jersey et Texas aux USA), Punta Chame au Panama, et Puerto Viejo au P\u00e9rou) a montr\u00e9 que ses d\u00e9penses \u00e9nerg\u00e9tiques quotidienne (DEE pour <em>\u00ab\u00a0Daily energy expenditure\u00a0\u00bb<\/em>) dont \u00e9t\u00e9 fortement influenc\u00e9e par la temp\u00e9rature de l&rsquo;eau et de l&rsquo;air (\u00ab\u00a0environnement thermique\u00a0\u00bb), avec 4,2 fois le taux m\u00e9tabolique de base au New Jersey, 2,8 au Texas, 2,1 au Panama, et de 2,7 dans P\u00e9rou (soit respectivement 200, 135, 100, et 129 kJ\/j pour un nombre d&rsquo;individus \u00e9tudi\u00e9s qui \u00e9tait de n = 10, 5, 10, et 16 respectivement.<br \/>\nComme attendu, le budget-temps consacr\u00e9 au repos et \u00e0 l&rsquo;alimentation variait en cons\u00e9quence, avec jusqu&rsquo;\u00e0 90\u00a0% du temps pass\u00e9 \u00e0 l&rsquo;alimentation et au repos (L&rsquo;alimentation occupait 55\u00a0% de son temps dans le New Jersey, 90\u00a0% au Texas, 40\u00a0% au Panama, et 45\u00a0% au P\u00e9rou, ce qui sugg\u00e8re que le sanderling trouve le plus difficilement sa nourriture au Texas par rapport aux 3 autres sites \u00e9tudi\u00e9s.<\/p>\n<p>Sa masse corporelle totale et son taux de graisse corporelle augmentent lin\u00e9airement alors que la temp\u00e9rature ext\u00e9rieure diminue, mais, en raison d&rsquo;une augmentation synchrone de ses d\u00e9penses \u00e9nerg\u00e9tiques, le temps de survie en cas de privation de nourriture n&rsquo;augmente que tr\u00e8s l\u00e9g\u00e8rement. Les sanderling vivent dans des conditions individuellement diff\u00e9rentes selon le gradiant g\u00e9ographique o\u00f9 ils passent leur temps de non-reproduction avec une DEE et des r\u00e9serves alimentaires principalement d\u00e9termin\u00e9e par la temp\u00e9rature de l&rsquo;environnement, et des s budgets-temps adapt\u00e9s \u00e0 leurs besoins. <img decoding=\"async\" class=\"wp-image-39775 alignleft\" src=\"http:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/g2-300x151.jpg\" alt=\"\" width=\"427\" height=\"215\" srcset=\"https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/g2-300x151.jpg 300w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/g2-1024x514.jpg 1024w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/g2-768x386.jpg 768w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/g2-1536x771.jpg 1536w, https:\/\/wildtravel.ro\/wp-content\/uploads\/2013\/12\/g2-2048x1028.jpg 2048w\" sizes=\"(max-width: 427px) 100vw, 427px\" \/><\/p>\n<p>Le B\u00e9casseau sanderling b\u00e9n\u00e9ficie d&rsquo;une protection totale sur le territoire fran\u00e7ais depuis l&rsquo;arr\u00eat\u00e9 minist\u00e9riel du 17 avril 1981 relatif aux oiseaux prot\u00e9g\u00e9s sur l&rsquo;ensemble du territoire. Il est donc interdit de le d\u00e9truire, le mutiler, le capturer ou l&rsquo;enlever, de le perturber intentionnellement ou de le naturaliser, ainsi que de d\u00e9truire ou enlever les \u0153ufs et les nids, et de d\u00e9truire, alt\u00e9rer ou d\u00e9grader son milieu. Qu&rsquo;il soit vivant ou mort, il est aussi interdit de le transporter, colporter, de l&rsquo;utiliser, de le d\u00e9tenir, de le vendre ou de l&rsquo;acheter.<\/p>\n<div align=\"justify\"><\/div>\n<div align=\"justify\"><\/div>\n<div align=\"justify\"><\/div>\n<div align=\"justify\"><\/div>\n<div align=\"justify\">foto: Mihai Baciu<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le B\u00e9casseau sanderling (Calidris alba) est une esp\u00e8ce de limicoles appartenant \u00e0 la famille des Scolopacidae et \u00e0 la sous-famille des Calidridinae. Il passe l&rsquo;\u00e9t\u00e9 et niche dans les r\u00e9gions autour du cercle polaire arctique et migre sur de longues distances migrants hivernant jusqu&rsquo;en Am\u00e9rique du Sud, Europe du Sud, en Afrique et en Australie. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":21527,"template":"","meta":{"_acf_changed":false},"categories":[],"tags":[],"birdwatching":[],"class_list":["post-3502","bird","type-bird","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>B\u00e9casseau sanderling (Calidris alba) - Voyage sauvage dans le delta du Danube<\/title>\n<meta name=\"description\" content=\"Le B\u00e9casseau sanderling (Calidris alba) est une esp\u00e8ce de limicoles appartenant \u00e0 la famille des Scolopacidae et\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wildtravel.ro\/fr\/bird\/becasseau-sanderling-calidris-alba\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e9casseau sanderling (Calidris alba) - 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