{"id":43,"date":"2021-10-20T02:34:12","date_gmt":"2021-10-20T02:34:12","guid":{"rendered":"http:\/\/depts.washington.edu\/scipos\/wordpress\/?p=43"},"modified":"2022-01-14T20:53:48","modified_gmt":"2022-01-14T20:53:48","slug":"lighting-up-life-bonus-story","status":"publish","type":"post","link":"https:\/\/depts.washington.edu\/scipos\/wordpress\/2021\/10\/20\/lighting-up-life-bonus-story\/","title":{"rendered":"Lighting up life, bonus story"},"content":{"rendered":"\n<p>Back in the land (sea?) of bioluminescence,&nbsp;<a href=\"http:\/\/www.sciencedaily.com\/releases\/2012\/04\/120426105707.htm\">a recent story on sharks may reveal some evolutionary background for hormonal control of their light emission<\/a>. These little sharks have a &#8220;luminescent liquid&#8221; in certain organs, and the main method of reducing the brightness displayed is to cover up the light-emitting cells\/organs with melanocytes, which can also be altered in&nbsp;<a href=\"http:\/\/oceana.org\/en\/blog\/2012\/01\/marine-monday-tasseled-wobbegong\">other sharks<\/a>&nbsp;and&nbsp;<a href=\"http:\/\/www.arkive.org\/spiny-butterfly-ray-\/gymnura-altavela\/image-G71556.html\">rays to aid camouflage<\/a>. It turns out, though, that different luminescent shark groups use the hormones differently, and the authors have a good guess as to which method is more ancestral.<\/p>\n\n\n\n<p>Some &#8220;lantern sharks&#8221; luminesce for the same reasons as anglerfish, to attract food sources, and some use their light to camouflage themselves against aquatic predators. The sky is bright, and a dark outline is easily seem from below. (See also&nbsp;<a href=\"http:\/\/creaturecast.org\/archives\/127-creaturecast-episode-1\">Creaturecast on Squid Iridescence<\/a>.) &#8212; KMP<\/p>\n\n\n\n<p>Claes JM, Ho H-C, Mallefet J. 2012. Control of luminescence from pygmy shark (<em>Squaliolus aliae<\/em>) photophores. J Exp Biol 215:1691-1699.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Back in the land (sea?) of bioluminescence,&nbsp;a recent story on sharks may reveal some evolutionary<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[7,1],"tags":[],"ppma_author":[22],"class_list":["post-43","post","type-post","status-publish","format-standard","hentry","category-community","category-scipos"],"authors":[{"term_id":22,"user_id":1,"is_guest":0,"slug":"scipos","display_name":"SciPos","avatar_url":{"url":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-content\/uploads\/2022\/06\/0bb1f4cb5ff99dd034602ced0e2534fc.png","url2x":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-content\/uploads\/2022\/06\/0bb1f4cb5ff99dd034602ced0e2534fc.png"},"author_category":"","user_url":"https:\/\/depts.washington.edu\/scipos\/wordpress\/","last_name":"","first_name":"","job_title":"","description":""}],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/posts\/43","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/comments?post=43"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/posts\/43\/revisions"}],"predecessor-version":[{"id":44,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/posts\/43\/revisions\/44"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/media?parent=43"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/categories?post=43"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/tags?post=43"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/depts.washington.edu\/scipos\/wordpress\/wp-json\/wp\/v2\/ppma_author?post=43"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}