{"id":62249,"date":"2017-07-10T08:40:08","date_gmt":"2017-07-10T18:40:08","guid":{"rendered":"http:\/\/www.hawaii.edu\/news\/?p=62249"},"modified":"2019-03-08T13:27:50","modified_gmt":"2019-03-08T23:27:50","slug":"giant-sea-spiders","status":"publish","type":"post","link":"https:\/\/www.hawaii.edu\/news\/2017\/07\/10\/giant-sea-spiders\/","title":{"rendered":"Giant sea spiders use their legs as gills and their guts as hearts"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><div class=\"responsive-video-wrap\"><iframe loading=\"lazy\" width=\"620\" height=\"349\" src=\"https:\/\/www.youtube.com\/embed\/qEPKfEUSoho?rel=0&amp;showinfo=0\" title=\"Youtube video player\" allowfullscreen><\/iframe><\/div>\n<p class=\"clear-photo\">Sea spiders, a bizarre and ancient group of marine arthropods in the class Pycnogonida, breathe in a way not previously known to science, according to a study involving <a href=\"https:\/\/manoa.hawaii.edu\/\">University of <span aria-label=\"Hawaii\">Hawai&#699;i<\/span> at M\u0101noa<\/a> researcher <a href=\"https:\/\/manoa.hawaii.edu\/biology\/people\/amy-moran\"><strong>Amy Moran<\/strong><\/a> and zoology <abbr title=\"Doctor of Philosophy\">PhD<\/abbr> student <strong>Caitlin Shishido<\/strong>.<\/p>\n<figure id=\"attachment_62335\" aria-describedby=\"caption-attachment-62335\" style=\"width: 260px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-biology-giant-spider.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-biology-giant-spider-260x216.jpg\" alt=\"\" width=\"260\" height=\"216\" class=\"size-medium wp-image-62335\" srcset=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-biology-giant-spider-260x216.jpg 260w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-biology-giant-spider.jpg 620w\" sizes=\"auto, (max-width: 260px) 100vw, 260px\" \/><\/a><figcaption id=\"caption-attachment-62335\" class=\"wp-caption-text\">A dinner-plate-sized Antarctic sea spider. Photo by C. Shishido<\/figcaption><\/figure>\n<p>The study, published in the July 10 issue of <em><a href=\"http:\/\/www.cell.com\/current-biology\/home\">Current Biology<\/a><\/em>, was performed at McMurdo Station, Antarctica, while Moran and her team were there in the fall of 2016. Sea spiders in Antarctica can reach the size of dinner plates, part of a phenomenon known as &ldquo;polar gigantism.&rdquo; Most animals extract oxygen from the environment using specialized structures like gills and lungs, and distribute oxygen through their bodies using hearts and blood vessels. Sea spiders, distant marine relatives of land spiders, have no specialized structures to take up oxygen and their hearts are weak. Moran and her colleagues showed that sea spiders get oxygen through the surface of their legs and move it around their bodies while digesting their food with peristaltic contractions of the gut, which extends out to the end of all of the animal&#8217;s 8 to 12 legs.<\/p>\n<p>&ldquo;We are really excited about these results because they show that sea spiders solve one of life\u2019s biggest challenges&#8212;getting oxygen into the body and taking it where it needs to go&#8212;in a way that is new to science,&rdquo; said Moran. &ldquo;The next thing we would love to know is if this is unique to sea spiders, or if other animals also move oxygen with their guts and we just never knew about it.&rdquo;<\/p>\n<p>Jon Harrison, a professor of biology at Arizona State University not involved in the project, says &ldquo;This study beautifully demonstrates that sea spiders use their legs like gills and their guts like hearts, illustrating the important role of basic research in revealing very fundamental attributes of animal function.&rdquo;<\/p>\n<p>This work was funded by grants from the <a href=\"https:\/\/www.nsf.gov\/div\/index.jsp?div=OPP\">Division of Polar Programs<\/a> at the <a href=\"https:\/\/www.nsf.gov\/\">National Science Foundation<\/a>.<\/p>\n<figure id=\"attachment_62257\" aria-describedby=\"caption-attachment-62257\" style=\"width: 620px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-seaspiders-reserch.jpg\" alt=\"\" width=\"620\" height=\"413\" class=\"size-full wp-image-62257\" srcset=\"https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-seaspiders-reserch.jpg 620w, https:\/\/www.hawaii.edu\/news\/wp-content\/uploads\/2017\/07\/manoa-seaspiders-reserch-260x173.jpg 260w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><figcaption id=\"caption-attachment-62257\" class=\"wp-caption-text\"><abbr title=\"University of Hawaii\">糖心视频<\/abbr> M\u0101noa researcher Amy Moran dives with sea spiders in Antarctica. Photo by R. Robbins<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p><abbr title=\"University of Hawaii\">糖心视频<\/abbr> M\u0101noa&#8217;s Amy Moran and Caitlin Shishido discovered the ancient group of marine arthropods extract oxygen in a way new to science.<\/p>\n","protected":false},"author":16,"featured_media":62554,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,12],"tags":[254,308,175,9,56],"class_list":["post-62249","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","category-video","tag-biology","tag-college-of-natural-sciences","tag-marine-biology","tag-uh-manoa","tag-video-2","entry","has-media"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"University of Hawaii at M\u0101noa\u02bbs, Amy Moran and Caitlin Shishido discovered the ancient group of 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