{"id":1299,"date":"2013-09-10T14:32:06","date_gmt":"2013-09-10T18:32:06","guid":{"rendered":"http:\/\/www.borgodu.com\/?p=1299"},"modified":"2013-09-10T14:32:06","modified_gmt":"2013-09-10T18:32:06","slug":"clams-and-low-ph","status":"publish","type":"post","link":"https:\/\/sites.wp.odu.edu\/BORG\/2013\/09\/10\/clams-and-low-ph\/","title":{"rendered":"Clams and low pH"},"content":{"rendered":"<p>Becky Walawender from the Department of Biology here at ODU has been monitoring the soft\u00a0shell clams that were recruited into our tank\u00a0this spring. Here she describes the results so far.<\/p>\n<p>Soft-shell clams (<em><a href=\"http:\/\/en.wikipedia.org\/wiki\/Soft-shell_clam\">Mya<\/a>\u00a0a<\/em>renia) have fragile, thin shells made of calcium carbonate and are susceptible to breaking under the acidic conditions associated with excessive carbon dioxide. To test this, we placed 110 soft-shell clams into sediment and monitored their survival in five different pH levels (6.0, 6.5, 7.0, 7.5, 8.0). After two months, we noticed a decrease in survivorship of the clams in pH 6.0. Of the remaining 90 clams in the pH 6 tank (20 were removed for genetic analysis), 55 were confirmed dead, mortality in the other treatments was approximately 6-11 clams. The shells of the dead clams from pH 6.O became brittle and eroded through at the middle, below the umbo.<\/p>\n<p><a href=\"https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1300\" src=\"https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01-224x300.jpg\" alt=\"Clams from pH6\" width=\"224\" height=\"300\" srcset=\"https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01-224x300.jpg 224w, https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01-765x1024.jpg 765w, https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01-945x1265.jpg 945w, https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01-600x803.jpg 600w, https:\/\/sites.wp.odu.edu\/BORG\/wp-content\/uploads\/sites\/57\/2013\/09\/2013-08-14-11.20.01.jpg 1936w\" sizes=\"(max-width: 224px) 100vw, 224px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Becky Walawender from the Department of Biology here at ODU has been monitoring the soft\u00a0shell clams that were recruited into our tank\u00a0this spring. Here she describes the results so far. Soft-shell clams (Mya\u00a0arenia) have fragile, thin shells made of calcium carbonate and are susceptible to breaking under the acidic conditions associated with excessive carbon dioxide. [&hellip;]<\/p>\n","protected":false},"author":53,"featured_media":1300,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","wds_primary_category":0},"categories":[2,4,6],"tags":[],"_links":{"self":[{"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/posts\/1299"}],"collection":[{"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/users\/53"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/comments?post=1299"}],"version-history":[{"count":0,"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/posts\/1299\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/media\/1300"}],"wp:attachment":[{"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/media?parent=1299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/categories?post=1299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/BORG\/wp-json\/wp\/v2\/tags?post=1299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}