Bleached corals ruin fish camouflage


	Bleached corals ruin fish camouflage

ofcapri

10-22-2009 11:02 AM

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tags:

nature

ofcapri says:

“This study is the first to show a direct link between coral bleaching, predator behaviour and prey-fish susceptibility.”

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/9ef51ee5-89e2-42ce-860f-437eb947b675/13233618-7D17-448D-B44A-5F479DC5898D/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.nature.com/news/2009/091021/full/news.2009.1023.html" href="http://www.nature.com/news/2009/091021/full/news.2009.1023.html" style="font-size: 11px;">www.nature.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><H1 class="heading entry-title">Bleached corals ruin fish camouflage</H1></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/www.nature.com/img/03772703-ADAF-44AF-A5C7-018FC0B86ACE" alt="Damselfish" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><SPAN class="imagedescription">You can run but you can't hide, little damsel.<SPAN class="imagecredit">Getty</SPAN></SPAN></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><P class="intro">No hiding place from ecosystem collapse on the reef.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><P>Fish that usually camouflage themselves among colourful coral reefs are losing their ability to hide from predators as corals are bleached by Earth's acidifying oceans.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><P>Bleaching often leads to coral death, and is a stress response to two key factors: increasing ocean acidity, caused by uptake of carbon dioxide from the atmosphere, and a rise in ocean temperature. It's all too apparent that ecosystems near bleached corals tend to collapse, but the reasons why are not fully understood.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/news/2009/091021/full/news.2009.1023.html"><P>The corals were either healthy, bleached, recently dead from bleaching or long-dead and covered with thick green algae. After the damselfish had spent an hour acclimatizing to their surroundings, a predatory reef fish, the dottyback (<SPAN class="i">Pseudochromis fuscus</SPAN>), was introduced into each aquarium for 75 hours.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/13233618-7D17-448D-B44A-5F479DC5898D/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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