Navigation Links
Man-made noise makes fish more susceptible to predators
Date:8/6/2014

Despite their reputation as slippery customers, a new study has shown that eels are losing the fight to survive when faced with marine noise pollution such as that of passing ships.

Scientists from the Universities of Exeter and Bristol found that fish exposed to playback of ship noise lose crucial responses to predator threats.

The study, published today in the journal Global Change Biology, found European eels were 50% less likely to respond to an ambush from a predator, while those that did had 25% slower reaction times. Those that were pursued by a predator were caught more than twice as quickly when exposed to the noise.

Lead author Dr Steve Simpson, Senior Lecturer in Marine Biology & Global Change at the University of Exeter, said: "Our findings demonstrate that acute acoustic events, such as the noise of a passing ship, may have serious impacts on animals with direct consequences for life-or-death behavioural responses. If these impacts affect whole populations then the endangered eel, which has seen a 90% crash in abundance over the past 20 years due to climate change, may have one more problem to deal with as they cross busy coastal areas."

To understand what may cause this loss of crucial anti-predator behaviour, the team also tested physiology and spatial behaviour, and found heightened stress levels (increased ventilation and metabolic rate) and reduced lateralised behaviour (right-left preferences) when eels were subjected to playback of ship noise.

Co-author Dr Andy Radford, Reader in Behavioural Ecology at the University of Bristol, explains: "The fact that eels were affected physiologically and spatially suggests that other important functions may also be affected. We focused on anti-predator responses as, unlike impacts on movement or feeding, there is no way to compensate for being eaten after the disturbance goes away."

This study highlights the importance of assessing the scale of impacts of the anthropogenic noise that now pervades many coastal environments. Dr Simpson said: "If we want to effectively manage noise in the marine environment, we next need to assess the spatial scale over which individual animals and populations are affected. This means taking experiments like this one to offshore environments near to real-world noise sources."


'/>"/>
Contact: Eleanor Gaskarth
e.f.gaskarth@exeter.ac.uk
44-782-730-9332
University of Exeter
Source:Eurekalert

Related biology news :

1. Not just for the birds: Man-made noise has ripple effects on plants, too
2. Soybeans susceptible to man-made materials in soil
3. UEA research reveals 4 new man-made gases in the atmosphere
4. Unexpected discovery reveals a new mechanism for how the cerebellum extracts signal from noise
5. Human noise has ripple effects on plants
6. ONR taps research teams to help reduce jet noise
7. Noise down, neuron signals up
8. NOAA: Underwater noise decreases whale communications in Stellwagen Bank sanctuary
9. Ship noise makes crabs get crabby
10. A new method for measuring the flow of traffic a street has to bear by measuring atmospheric noise
11. Pitt team finds mechanism that causes noise-induced tinnitus and drug that can prevent it
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/14/2016)... 14, 2016 BioCatch ™, ... today announced the appointment of Eyal Goldwerger ... Goldwerger,s leadership appointment comes at a time ... the deployment of its platform at several of the ... which discerns unique cognitive and physiological factors, is a ...
(Date:3/29/2016)... , March 29, 2016 ... "Company") LegacyXChange "LEGX" and SelectaDNA/CSI Protect are pleased to ... ink used in a variety of writing instruments, ensuring ... of originally created collectibles from athletes on LegacyXChange will ... analysis of the DNA. Bill Bollander ...
(Date:3/21/2016)... , March 22, 2016 ... with passcodes for superior security   ... leading provider of secure digital communications services, today announced ... technology and offer enterprise customers, particularly those in the ... recognition and voice authentication within a mobile app, alongside, ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... April 27, 2016 , ... ... technology at the Spring 2016 Marijuana Business Conference and Expo. Shimadzu’s high-performance instruments ... heavy metals, and more. Expo attendees can stop by booth 1021 to learn ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... mobile devices with fingerprint recognition for secure access, voice recognition for hands-free communication, ... ways consumers are interacting with biometrics technology today. But if they asked ...
(Date:4/27/2016)... SILVER SPRING, Md. and RESEARCH ... -- United Therapeutics Corporation (NASDAQ: UTHR ) announced ... Co-Chief Executive Officer, of United Therapeutics will provide an ... Deutsche Bank 41 st Annual Health Care Conference. ... May 5, 2016, at 10:00 a.m. Eastern Time, and ...
(Date:4/27/2016)... , ... April 27, 2016 , ... ... Jon Clark has joined the company as an Expert Consultant. Mr. Clark ... industry collaborations and managing the development of small molecule monographs based on analytical ...
Breaking Biology Technology: