Navigation Links
Ocean acidification leaves clownfish deaf to predators
Date:5/31/2011

Since the Industrial Revolution, over half of all the CO2 produced by burning fossil fuels has been absorbed by the ocean, making pH drop faster than any time in the last 650,000 years and resulting in ocean acidification. Recent studies have shown that this causes fish to lose their sense of smell, but a new study published today in Biology Letters shows that fish hearing is also compromised.

Working with Professor Philip Munday at James Cook University, lead author Dr Steve Simpson of the School of Biological Sciences at the University of Bristol reared larvae straight from hatching in different CO2 environments.

"We kept some of the baby clownfish in today's conditions, bubbling in air, and then had three other treatments where we added extra CO2 based on the predictions from the Intergovernmental Panel on Climate Change for 2050 and 2100," Dr Simpson said.

After 17-20 days rearing, Dr Simpson monitored the response of his juvenile clownfish to the sounds of a predator-rich coral reef, consisting of noises produced by crustaceans and fish.

"We designed a totally new kind of experimental choice chamber that allowed us to play reef noise through an underwater speaker to fish in the lab, and watch how they responded," Dr Simpson continued. "Fish reared in today's conditions swam away from the predator noise, but those reared in the CO2 conditions of 2050 and 2100 showed no response."

This study demonstrates that ocean acidification not only affects external sensory systems, but also those inside the body of the fish. The ears of fish are buried deep in the back of their heads, suggesting lowered pH conditions may have a profound impact on the entire functioning of the sensory system.

The ability of fish to adapt to rapidly changing conditions is not known. Dr Simpson said: "What we have done here is to put today's fish in tomorrow's environment, and the effects are potentially devastating. What we don't know is whether, in the next few generations, fish can adapt and tolerate ocean acidification. This is a one-way experiment on a global scale, and predicting the outcomes and interactions is a major challenge for the scientific community."


'/>"/>

Contact: Hannah Johnson
hannah.johnson@bristol.ac.uk
44-117-928-8896
University of Bristol
Source:Eurekalert

Related biology news :

1. Diatom genome helps explain success in trapping excess carbon in oceans
2. NOAA and NSF commission national study of ocean acidification
3. Coral reefs found growing in cold, deep ocean
4. Ecologists use oceanographic data to predict future climate change
5. Mysterious microbe may play important role in ocean ecology
6. Mysterious microbe plays important role in ocean ecology
7. Uncovering secrets of life in the ocean
8. Europe cores in EUROCORES: Ocean drilling in EuroMARC
9. Ocean growing more acidic faster than once thought
10. Ocean acidification from CO2 emissions will cause physiological impairment to jumbo squid
11. Ocean fish farming harms wild fish, study says
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/13/2016)... April 13, 2016  IMPOWER physicians supporting Medicaid patients ... a new clinical standard in telehealth thanks to a ... the higi platform, IMPOWER patients can routinely track key ... body mass index, and, when they opt in, share ... visit to a local retail location at no cost. ...
(Date:3/22/2016)... PUNE, India , March 22, 2016 ... new market research report "Electronic Sensors Market for ... Fingerprint, Proximity, & Others), Application (Communication & ... and Geography - Global Forecast to 2022", ... consumer industry is expected to reach USD ...
Breaking Biology News(10 mins):
(Date:5/2/2016)... ... May 02, 2016 , ... Meister ... mind, the fresh look and added functionality give the agricultural world a taste ... a dynamic shift in agriculture – from precision farming via satellites and Unmanned ...
(Date:5/2/2016)... ... May 02, 2016 , ... F.E.E.D. Co., the Feline ... their revolutionary, veterinarian-designed product for indoor cats. The NoBowl Feeding System replaces the ... food the way nature intended. NoBowls make cats happy and healthy. , Since ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... ... in personalized pain medicine, is excited to announce the launch of the ... public health studies, volunteerism, and education to promote the use of personalized medicine ...
(Date:4/29/2016)... ALBANY, New York , April 29, 2016 ... market report published by Transparency Market Research "Separation ... Analysis, Size, Share, Growth, Trends, and Forecast 2015 ... market was valued at US$ 10,665.5 Mn in ... CAGR of 6.8% from 2015 to 2023 to ...
Breaking Biology Technology: