Timfish Posted October 7, 2012 Share Posted October 7, 2012 Interesting article on coral bleaching and pigment changes for photoprotection. Quote Link to comment Share on other sites More sharing options...
victoly Posted October 7, 2012 Share Posted October 7, 2012 Link it, and they will come. Quote Link to comment Share on other sites More sharing options...
Timfish Posted October 8, 2012 Author Share Posted October 8, 2012 My cats can read my mind why can't you all? Here's the link: http://deepseanews.com/2010/09/color-me-stressed Quote Link to comment Share on other sites More sharing options...
victoly Posted October 8, 2012 Share Posted October 8, 2012 That's a really interesting read with how it pertains to reefkeeping. They made the observation that right before bleaching that "dazzling colors" were displayed, something that SPS keepers shoot for. I guess it's a bit different in that they used high temperatures to induce the stress instead of ULNS, but it seems that there might be some correlation. I'm off to make a "temperature reactor" to get my SPS to color up Quote Link to comment Share on other sites More sharing options...
mFrame Posted October 8, 2012 Share Posted October 8, 2012 I know when my RBTA bleached a few years ago due to overheating it was gorgeous, a brilliant electric pink, for about two weeks. Then it went all ugly, depressing white and took six months to recover and return to its previous beautiful red. It seems like with SPS that it would be like balancing on a razor's edge to maintain. Quote Link to comment Share on other sites More sharing options...
victoly Posted October 8, 2012 Share Posted October 8, 2012 I wonder if the ULNS mechanism and the temperature mechanism are the same? Quote Link to comment Share on other sites More sharing options...
bige Posted October 8, 2012 Share Posted October 8, 2012 I wonder if the ULNS mechanism and the temperature mechanism are the same? I wonder that as well. Although it doesn't seem coral stay happy with the high temps. Quote Link to comment Share on other sites More sharing options...
Timfish Posted October 8, 2012 Author Share Posted October 8, 2012 I wonder if the ULNS mechanism and the temperature mechanism are the same? Probably not. With ULNS the coral is being starved so it cannot grow any Symbodinium sp. dinoflagellates. With temperature the coral actively expells the symbiotic algae it has and it's believed is attempting to exchange one species or variant of Symbodinium for another that is will work better at the higher temperature. Like Mike pointed out bleaching does not mean a certain death for a speciman. Quote Link to comment Share on other sites More sharing options...
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