Warming oceans drive fish deeper

Melbourne, Aug 8 (IANS) In response to rise in sea surface temperature, fish go deeper into water to escape the heat, says a new study.

The finding that throws light on what to expect if predictions of ocean warming as a result of climate change come to pass.

The researchers from James Cook University in Queensland, Australia tagged 60 redthroat emperor fish at Heron Island in the southern Great Barrier Reef.

The fish were equipped with transmitters that identified them individually and signaled their depth to an array of receivers around the island.

The experiment monitored fish for up to a year and found the fish were less likely to be found on the reef slope on warmer days.

The research team considered temperature, air pressure rainfall, wind and moon phases as reasons for the shift, but discovered the only significant correlation was with temperature – the redthroat emperor were consistently monitored when water was less than 24 degrees Celsius.

Most studies looked at the effect ocean warming would have on fish biology, not on how they would distribute themselves to compensate for higher temperatures, said lead researcher Leanne Currey.

“This is a commercially important fish and we are looking at a significant depth shift,” she said.

The findings appeared in the journal Coral Reefs.

 

Leave a Reply

Please enter your comment!

The opinions, views, and thoughts expressed by the readers and those providing comments are theirs alone and do not reflect the opinions of www.mangalorean.com or any employee thereof. www.mangalorean.com is not responsible for the accuracy of any of the information supplied by the readers. Responsibility for the content of comments belongs to the commenter alone.  

We request the readers to refrain from posting defamatory, inflammatory comments and not indulge in personal attacks. However, it is obligatory on the part of www.mangalorean.com to provide the IP address and other details of senders of such comments to the concerned authorities upon their request.

Hence we request all our readers to help us to delete comments that do not follow these guidelines by informing us at  info@mangalorean.com. Lets work together to keep the comments clean and worthful, thereby make a difference in the community.

Please enter your name here