{"id":820,"date":"2010-05-14T08:08:05","date_gmt":"2010-05-14T15:08:05","guid":{"rendered":"http:\/\/blogs.oregonstate.edu\/breakingwaves\/?p=820"},"modified":"2010-05-14T08:13:25","modified_gmt":"2010-05-14T15:13:25","slug":"fast-growing-marine-invasive-found-in-oregon-waters","status":"publish","type":"post","link":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/2010\/05\/14\/fast-growing-marine-invasive-found-in-oregon-waters\/","title":{"rendered":"Fast-growing marine invasive found in Oregon waters"},"content":{"rendered":"<p><a href=\"http:\/\/blogs.oregonstate.edu\/breakingwaves\/files\/2010\/05\/trunicate-invasive.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-821\" style=\"margin: 5px\" title=\"New invasive found in Oregon waters\" src=\"http:\/\/blogs.oregonstate.edu\/breakingwaves\/files\/2010\/05\/trunicate-invasive-300x225.jpg\" alt=\"Didemnum vexillum\" width=\"300\" height=\"225\" srcset=\"https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/181\/files\/2010\/05\/trunicate-invasive-300x225.jpg 300w, https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/181\/files\/2010\/05\/trunicate-invasive.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>An aggressive, invasive aquatic organism that is on the state\u2019s most dangerous species list has been discovered in both Winchester Bay and Coos Bay, and scientists say this \u201ccolonial tunicate\u201d \u2013 <em>Didemnum vexillum<\/em> \u2013 has serious economic and environmental implications.<\/p>\n<p>Its propensity to foul surfaces of boats, fishing nets, water intakes, docks and buoys could make it costly to control, and its ability to smother shellfish beds and sensitive marine environments threatens other marine life.<\/p>\n<p>\u201cThis is not a welcome addition to our bays and now the clock is ticking,\u201d said Sam Chan, Oregon Sea Grant&#8217;s\u00a0 invasive species specialist at Oregon State University and chair of the Oregon Invasive Species Council. \u201cThe fouling potential from tunicate invasions can be severe, given its ability to reproduce asexually by budding, or breaking off as fragments, and through sexual reproduction where tadpoles emerge, swim and attach themselves to surfaces to form new colonies.&#8221;<\/p>\n<p>The <em>Didemnum <\/em>invertebrates were first discovered earlier this year\u00a0 in Winchester Bay, and later in Coos Bay. They are native to Japan and can live from the estuary to the continental shelf. In calm water, colonies may grow in long, beard-like expanses on substrates such as docks, mooring lines, boat hulls and aquaculture infrastructure.<\/p>\n<p>In faster currents, <em>Didemnum <\/em>forms low, undulating mats overgrowing seabeds of pebbles, boulders and jetty rock. The organisms will grow over, and choke clams, oysters, mussels, anemones and other marine creatures by covering their feeding siphons, and can serve as a barrier between bottom-feeding fish and their prey.<br \/>\n<a href=\"http:\/\/oregonstate.edu\/ua\/ncs\/archives\/2010\/may\/invasive-\u201ctunicate\u201d-appears-oregon\u2019s-coastal-waters\" target=\"_blank\">Read more &#8230;<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An aggressive, invasive aquatic organism that is on the state\u2019s most dangerous species list has been discovered in both Winchester Bay and Coos Bay, and scientists say this \u201ccolonial tunicate\u201d \u2013 Didemnum vexillum \u2013 has serious economic and environmental implications. &hellip; <a href=\"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/2010\/05\/14\/fast-growing-marine-invasive-found-in-oregon-waters\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":208,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1223969],"tags":[],"class_list":["post-820","post","type-post","status-publish","format-standard","hentry","category-invasive-species"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p64BdL-de","_links":{"self":[{"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/posts\/820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/users\/208"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/comments?post=820"}],"version-history":[{"count":4,"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/posts\/820\/revisions"}],"predecessor-version":[{"id":824,"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/posts\/820\/revisions\/824"}],"wp:attachment":[{"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/media?parent=820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/categories?post=820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev.blogs.oregonstate.edu\/breakingwaves\/wp-json\/wp\/v2\/tags?post=820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}