Fish use chemical camouflage from diet to hide from predators

December 10, 2014

A species of small fish uses coral-scented camouflage to hide from predators, a new study has shown, providing the first evidence of chemical camouflage from diet in fish. “This is the very first evidence of this kind of chemical crypsis from diet in a vertebrate,” said Rohan Brooker, a post-doctoral fellow in the School of Biology at the Georgia Institute of Technology in Atlanta. To read more, visit this link.

 

Reduced odor tracking in sharks as ocean acidification increases

September 10, 2014

These findings show that shark feeding could be affected by changes in seawater chemistry projected for the end of this century. Understanding the effects of ocean acidification on critical behaviors, such as prey tracking in large predators, can help determine the potential impacts of future ocean acidification on ecosystem function. To read more, click on this link.

 

Marine protected areas might not be enough to help overfished reefs recover

August 21, 2014

Damaged coral reefs emit chemical cues that repulse young coral and fish, discouraging them from settling in the degraded habitat, according to new research. The study shows for the first time that coral larvae can smell the difference between healthy and damaged reefs when they decide where to settle.

“If you’re setting up a marine protected area to seed recruitment into a degraded habitat, that recruitment may not happen if young fish and coral are not recognizing the degraded area as habitat,” said Danielle Dixson, an assistant professor in the School of Biology at the Georgia Institute of Technology in Atlanta, and the study's first author. Click on this link for more information.