Fish ask for help by releasing chemical substance

Research shows that when prey fish are caught by predators, they will release chemical cues, a distress call which will greatly enhance their chance for survival. The findings are published by researchers from Uppsala University, Sweden and James Cook University in Australia in Proceedings of the Royal Society B. The fish harbour a chemical substance under their skin and it will be released once injured. The chemical will affect the fish nearby and they will be fearful then escape immediately. However, the benefits to the sender have not been identified. Scientists have debated the evolutionary origin of chemical alarm cues in fish for many years. The chemical substance provides obvious benefits to surrounding fish, but the senders seem to have little benefits. The study shows that the chemical cue attracts more predators to the places. When caught by predators, the small damselfish have little chance to run away and not eating by the predators. But when other predators come, preys have more time to escape. The results of the research indicate that fish may benefit from the production and release of chemical alarm cues, and highlight the important role of chemical cues in predator-prey interactions on coral reefs. It indicates that coral reef fish have equipped with a various clever strategies to survive during long evolutionary time. You may like this>>>http://www.cusabio.com/ELISA-Kit/Rat-leukotriene-B5LT-B5-ELISA-kit-1081315.html