{"id":111571,"date":"2024-10-07T23:08:10","date_gmt":"2024-10-07T16:08:10","guid":{"rendered":"https:\/\/hotvideos24.online\/?p=111571"},"modified":"2024-10-07T23:08:10","modified_gmt":"2024-10-07T16:08:10","slug":"comb-jellies-fuse-together-when-injured-study-finds-marine-life","status":"publish","type":"post","link":"https:\/\/hotvideos24.online\/?p=111571","title":{"rendered":"Comb jellies fuse together when injured, study finds | Marine life"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<\/p>\n<div>\n<p class=\"dcr-1eu361v\">It might not be what the Spice Girls envisaged when they sang 2 Become 1, but scientists have found comb jellies do actually fuse together if they are injured.<\/p>\n<p class=\"dcr-1eu361v\">Researchers studying a species of the gelatinous marine invertebrates known as \u201csea walnuts\u201d said they made the discovery after spotting an unusually shaped individual in the laboratory tank.<\/p>\n<p class=\"dcr-1eu361v\">\u201cI was very excited,\u201d said Dr Oscar Arenas, co-author of the work, from the University of California, Berkeley.<\/p>\n<p class=\"dcr-1eu361v\"><a href=\"https:\/\/dx.doi.org\/10.1016\/j.cub.2024.07.084\" data-link-name=\"in body link\">Writing in the journal Current Biology<\/a>, the team reports that, among other features, the creature appeared to have two \u201caboral ends\u201d, or backsides.<\/p>\n<p class=\"dcr-1eu361v\">In addition, Arenas said, the animal had two mouths \u2013 something the team had never seen before.<\/p>\n<p class=\"dcr-1eu361v\">\u201cThis led us to wonder if it was the result of two independent animals fusing,\u201d he said. \u201cThat same night, we began trying to replicate this observation.\u201d<\/p>\n<p class=\"dcr-1eu361v\">The team took pairs of sea walnuts \u2013 collected from different sites at different times \u2013 and, for each, removed part of the side of the body. Each pair was then pinned together overnight with their injuries touching.<\/p>\n<p class=\"dcr-1eu361v\">The results revealed that, in nine out of 10 cases, the individuals had fused.<\/p>\n<p class=\"dcr-1eu361v\">\u201cOnce we realised we could consistently reproduce the fusion, we shortened the time, and eventually we found the fusion occurred within a few hours in a petri dish,\u201d Arenas said.<\/p>\n<p class=\"dcr-1eu361v\">The team notes it is not the first time the grafting of comb jellies \u2013 or ctenophores \u2013 has been reported, but they say their experiments expand upon such observations.<\/p>\n<p class=\"dcr-1eu361v\">Among other findings, the team found when they prodded one side of the fused creature both individuals jerked and contracted, a result that suggests the nervous systems of the pair might have merged, they say.<\/p>\n<p class=\"dcr-1eu361v\">Arenas said the finding was exciting because very little is known about the ctenophore nervous system.<\/p>\n<p class=\"dcr-1eu361v\">\u201cMoreover, given that ctenophores are now considered descendants of the ancestors of all other animals, studying how their nervous system works is crucial for understanding the basic principles of neuronal function,\u201d he said.<\/p>\n<p class=\"dcr-1eu361v\">\u201cBeyond that, our observations suggest that ctenophores might serve as an excellent model for investigating evolutionary processes of self-recognition systems and advancing our understanding of tissue grafting and regeneration in many tissues, including the nervous system.\u201d<\/p>\n<p class=\"dcr-1eu361v\">The idea that the nervous systems had merged was supported by the discovery that, one hour after the comb jellies were paired, their muscle contractions started to synchronise. An experiment involving six fused pairs suggested 95% of contractions within each pair were completely synchronous after two hours.<\/p>\n<p class=\"dcr-1eu361v\">The researchers found that when they fed fluorescently labelled food to one of the comb jellies, particles passed into the digestive system of the other. The digested waste products, however, were expelled from both anuses in an unsynchronised manner.<\/p>\n<p class=\"dcr-1eu361v\">Arenas said the study suggested comb jellies had few mechanisms for distinguishing their own tissues from those of others of the same species.<\/p>\n<p class=\"dcr-1eu361v\">\u201cI am convinced that it provides insight into the molecular mechanism of how single cells recognise themselves when they coalesce to become multicellular animals.\u201d<\/p>\n<\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<br \/><div data-type=\"_mgwidget\" data-widget-id=\"1660802\">\r\n<\/div>\r\n<script>(function(w,q){w[q]=w[q]||[];w[q].push([\"_mgc.load\"])})(window,\"_mgq\");\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/www.theguardian.com\/environment\/2024\/oct\/07\/comb-jellies-fuse-together-when-injured-study-finds\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It might not be what the Spice Girls envisaged when they sang 2 Become 1, but scientists have found comb jellies do actually fuse together if they are injured. Researchers &hellip; <a href=\"https:\/\/hotvideos24.online\/?p=111571\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8628],"tags":[],"class_list":["post-111571","post","type-post","status-publish","format-standard","hentry","category-science","entry"],"_links":{"self":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/111571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=111571"}],"version-history":[{"count":0,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/111571\/revisions"}],"wp:attachment":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=111571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=111571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=111571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}