{"id":1545,"date":"2014-05-15T15:01:02","date_gmt":"2014-05-15T20:01:02","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=1545"},"modified":"2014-05-15T22:08:16","modified_gmt":"2014-05-16T03:08:16","slug":"why-dont-octopuses-tie-themselves-up-in-knots","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/why-dont-octopuses-tie-themselves-up-in-knots\/","title":{"rendered":"Why don\u2019t octopuses tie themselves up in knots?"},"content":{"rendered":"<div id=\"attachment_1546\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/11847079564_738048a775_b.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1546\" class=\"size-full wp-image-1546\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/11847079564_738048a775_b.jpg\" alt=\"A new study indicates that octopus skin exudes a compound that prevents it from getting stuck to the animal\u2019s own suckers. (Photo credit: Joe Parks, via Flickr)\" width=\"400\" height=\"312\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/11847079564_738048a775_b.jpg 400w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/11847079564_738048a775_b-300x234.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-1546\" class=\"wp-caption-text\">A new study indicates that octopus skin exudes a compound that prevents it from getting stuck to the animal\u2019s own suckers. (Photo credit: <a href=\"https:\/\/www.flickr.com\/photos\/parksjd\/11847079564\/\">Joe Parks, via Flickr<\/a>)<\/p><\/div>\n<p><span style=\"color: #000000;\">New research indicates that octopus skin exudes a chemical substance that repels its own suckers. <\/span><\/p>\n<p><span style=\"color: #000000;\">Octopus arms &#8211; which remain alive for up to an hour after amputation &#8211; do not grab octopus skin or objects covered in octopus skin, although they will grab skinned octopus parts. This suggests a chemical repulsion, though the researchers have yet to describe the exact substance responsible. <\/span><\/p>\n<p><span style=\"color: #000000;\">Interestingly, live octopus can override this reaction to grab and eat arms of their deceased kin. <\/span><\/p>\n<h4><span style=\"color: #000000;\">Videos <\/span><a style=\"color: #1155cc;\" href=\"http:\/\/www.eurekalert.org\/emb_releases\/2014-05\/cp-hod050714.php\" target=\"_blank\">available here<\/a><span style=\"color: #000000;\">.<\/span><\/h4>\n<p><a href=\"http:\/\/www.cell.com\/current-biology\/abstract\/S0960-9822(14)00462-X\" target=\"_blank\"><span style=\"text-decoration: underline;\"><span>Original research paper<\/span><\/span>\u00a0<\/a>published in the the Journal\u00a0<em>Current<\/em><em>\u00a0Biology<\/em><em>\u00a0<\/em>on\u00a0<strong>May 15, 2014<\/strong>.<\/p>\n<p><span style=\"text-decoration: underline;\"><span><strong>Names and affiliations of selected\u00a0authors<\/strong><\/span><\/span><\/p>\n<h4 dir=\"ltr\" style=\"color: #222222;\"><a style=\"color: #1155cc;\" href=\"http:\/\/www.octopus.huji.ac.il\/site\/index.html\" target=\"_blank\">Benny Hochner<\/a><span style=\"color: #000000;\">, Hebrew University of Jerusalem, Israel<\/span><\/h4>\n<h4 dir=\"ltr\" style=\"color: #222222;\"><a style=\"color: #1155cc;\" href=\"http:\/\/octopus.huji.ac.il\/site\/guylevy\/guylevy.html\" target=\"_blank\">Guy Levy<\/a><span style=\"color: #000000;\">, Hebrew University of Jerusalem, Israel<\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>New research indicates that octopus skin exudes a chemical substance that repels its own suckers. Octopus arms &#8211; which remain alive for up to an hour after amputation &#8211; do not grab octopus skin or objects covered in octopus skin, although they will grab skinned octopus parts. This suggests a chemical repulsion, though the researchers [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1546,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[25],"tags":[39,174,1471,113],"class_list":["post-1545","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest","tag-animal-behaviour","tag-animals","tag-biochemistry","tag-biology"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/11847079564_738048a775_b.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-oV","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=1545"}],"version-history":[{"count":1,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1545\/revisions"}],"predecessor-version":[{"id":1548,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1545\/revisions\/1548"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/1546"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=1545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=1545"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=1545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}