{"id":222,"date":"2013-06-20T14:53:34","date_gmt":"2013-06-20T14:53:34","guid":{"rendered":"http:\/\/www.oceanblogs.org\/bioacid\/?p=222"},"modified":"2013-09-05T12:41:53","modified_gmt":"2013-09-05T12:41:53","slug":"das-sea-urchin-experiment","status":"publish","type":"post","link":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/2013\/06\/20\/das-sea-urchin-experiment\/","title":{"rendered":"Das (sea urchin) experiment"},"content":{"rendered":"

Previously on \u201dDas sea urchin experiment\u201d: One month ago, a crazy Belgian scientist has added sea urchin embryos into the mesocosms. A few days later, he was surprised to see that they survived \u201cinto the wild\u201d. Will urchin babies survive into this fierce environment?<\/p>\n

It\u2019s been a month now.<\/p>\n

Every week, I checked into the samples of zooplankton taken into each of the 10 mesocosms and could recover some of the sea urchin larvae. I was amazed to see that they were developing as well (or even better) than in the laboratory. To be honest, this was already quite a success and more than I expected. With this first preliminary experiment in the mesocosm world, I just wanted to test to potential of the mesocosms to test hypotheses developed into the lab. I was not expecting to have data that I could actually use. For once, I am very happy to be proved wrong.
\nBut it is even better than in my craziest dreams.<\/p>\n

Last week, the larvae started to develop a rudiment. After the sea urchin embryo has developed to a pluteus larva, a rudiment is formed on the left side of the larva and then metamorphoses into a juvenile after settlement.<\/p>\n

The formation of a juvenile ends the pelagic life of the sea urchin that settles on the bottom and starts a new life. The ideal experiment would end with my larvae settling, metamorphosing into a juvenile and starting a new benthic life. So imagine my surprise when I found my first juvenile in the samples of the week.<\/p>\n

\"Sea<\/a>

Juvenile sea urchin. Photo: Sam Dupont<\/p><\/div>\n

I now have data on survival, larval growth and settlement success and a fascinating story to tell. It seems that they were only settling (so far) into the control mesocosms, the development being delayed in the high CO2 treatments. This is opening a world of opportunity and crazy ideas are boiling inside my head. Ulf Riebesell and his crew have brought me to the \u201cdark side\u201d. I even decided to join the next mesocosm campaign next year. But for some reason, I have the voice of a dead supervisor in the back of my head whispering: \u201cnever repeat a successful experiment\u201d.<\/p>\n

Well, I will just ignore it. This is too much fun.<\/p>\n

By Sam Dupont<\/div>\n","protected":false},"excerpt":{"rendered":"

Previously on \u201dDas sea urchin experiment\u201d: One month ago, a crazy Belgian scientist has added sea urchin embryos into the mesocosms. A few days later, he was surprised to see that they survived \u201cinto the wild\u201d. Will urchin babies survive into this fierce environment? It\u2019s been a month now. Every week, I checked into the […]<\/p>\n","protected":false},"author":11,"featured_media":157,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-222","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/posts\/222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/comments?post=222"}],"version-history":[{"count":4,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/posts\/222\/revisions"}],"predecessor-version":[{"id":361,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/posts\/222\/revisions\/361"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/media\/157"}],"wp:attachment":[{"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/media?parent=222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/categories?post=222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/KOSMOS2013\/wp-json\/wp\/v2\/tags?post=222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}