Navigation Links
Rising ocean acidification leads to anxiety in fish
Date:12/4/2013

being placed in seawater with normal carbon dioxide levels. Only after the twelfth day in normal seawater did the anxious fish behave like the control group and resumed normal behavior.

The researchers say the anxiety is traced to the fish's sensory systems, and specifically "GABAA" (neural gamma-aminobutyric acid type A) receptors, which are also involved in human anxiety levels. Exposure to acidified water leads to changes in the concentrations of ions in the blood (especially chloride and bicarbonate), which reverses the flux of ions through the GABAA receptors. The end result is a change in neuronal activity that is reflected in the altered behavioral responses described in this study.

"These results are novel and thought-provoking," said Martn Tresguerres, a Scripps marine biologist and study coauthor, "because they reveal a potential negative effect of ocean acidification on fish behavior that can possibly affect normal population dynamics and maybe even affect fisheries."

Tresguerres says anxious behavior is a concern for juvenile rockfish because they live in highly dynamic environments such as kelp forests and drifting kelp paddies that offer variable lighting and shading conditions.

"If the behavior that we observed in the lab applies to the wild during ocean acidification conditions, it could mean that juvenile rockfish may spend more time in the shaded areas instead of exploring around," said Tresguerres. "This would have negative implications due to reduced time foraging for food, or alterations in dispersal behavior, among others."

Alteration of GABAA receptor function in fish exposed to ocean acidification was originally described by Phil Munday (James Cook University, Australia), Gran Nilsson (University of Oslo) and collaborators, who found that ocean acidification impaired olfaction in tropical clown fish. The study by Hamilton, Holcombe, and Tresguerres adds anxiety behavior to the list of biological f
'/>"/>

Contact: Mario Aguilera
scrippsnews@ucsd.edu
858-534-3624
University of California - San Diego
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Genetic survey of endangered Antarctic blue whales shows surprising diversity
2. Surprising pine beetle breeding habits help explain increasing tree damage, says CU study
3. Rising ocean temperatures harm protected coral reefs
4. A surprising new kind of proton transfer
5. LSUHSC research finds HPV-related head & neck cancers rising, highest in middle-aged white men
6. First-of-its-kind study reveals surprising ecological effects of earthquake and tsunami
7. Analysis of speed of Greenland glaciers gives new insight for rising sea level
8. Mercury rising: Greater L.A. to heat up an average 4 to 5 degrees by mid-century
9. Rising heat at the beach threatens largest sea turtles, climate change models show
10. Seabirds study shows plastic pollution reaching surprising levels off coast of Pacific Northwest
11. Rising carbon dioxide in atmosphere also speeds carbon loss from forest soils, IU-led research finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/17/2014)... learned a great deal about complex social behavior by ... something to teach too. , With their unusually large ... parrots live in a complex social environment---not merely in ... or ants, but in a dynamic setting of alliances ... intelligent mammals: dolphins, whales, primates, and social carnivores, like ...
(Date:9/16/2014)... Environmental Health at the Mailman School of Public Health ... asthma and prenatal exposure to two phthalates used in ... in the journal Environmental Health Perspectives . ... higher levels of the chemicals, butylbenzyl phthalate (BBzP) and ... percent increase in risk of developing asthma between age ...
(Date:9/16/2014)... CLEVELAND, Ohio (September 17, 2014)The North American Menopause ... for the comprehensive care of midlife womenon everything ... feature, "The North American Menopause Society Recommendations for ... today in the Society,s journal Menopause . ... recommendations for the care of midlife women freely ...
Breaking Biology News(10 mins):Being social: Learning from the behavior of birds 2Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3
... A team of scientists from the University Hospitals of ... bowel diseases have low bone mass and poor bone architecture ... at increased risk of fracture. Inflammatory bowel disease ... inflammation of the bowel. Two of the most common disorders ...
... new study presented today at the World Congress on ... a commonly used injectible contraceptive, is associated with higher ... in combination with estrogens. Depot medroxyprogesterone acetate ... birth control drug which is injected every 3 months. ...
... muscle tissue experiences trauma or disease, such as ... as "satellite cells" respond to repair and regenerate ... neuromuscular diseases, such as muscular dystrophy, which affect ... researchers have used time-lapse photography to document satellite ...
Cached Biology News:Caught on tape: Muscle stem cells captured on video by MU researcher 2
(Date:9/17/2014)... FORT LAUDERDALE, Fla. , Sept. 17, 2014 ... signed an agreement to form a Special Purpose Vehicle in ... based Jatropha centric agro energy company. The SPV shall ... U.S. registered entity with AFAI as majority shareholder. The SPV ... Africa , particularly Ethiopia . ...
(Date:9/17/2014)... RXi Pharmaceuticals Corporation (NASDAQ: ... developing and commercializing innovative therapies addressing major unmet ... has been granted a patent by the United ... delivery system for delivering its "original" RNAi compounds ... treatment of diseases with an inflammatory component. Potential ...
(Date:9/17/2014)... CA (PRWEB) September 17, 2014 Escape Alert, ... for pets which will alert owners if their pet has ... GPS from an implanted microchip in the pet’s body. This ... microchips for pets have been around for many years, they ... are not able to track a pet’s location or alert the ...
(Date:9/17/2014)... (PRWEB) September 17, 2014 The ... committed to lowering the barriers to innovation in ... the appointment of Carmen Nitsche as Executive Director ... to expand its global reach. , Carmen joins ... Vice President, Corporate Development. At Accelrys, she managed ...
Breaking Biology Technology:AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 2AFAI Signs Joint Venture Agreement With Jatro Greentech Inc. 3RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 2RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 3RXi Pharmaceuticals Strengthens Intellectual Property Portfolio 4Implantable Microchip for Pets with GPS Tracking - Patent Filed by Escape Alert, LLC. 2Implantable Microchip for Pets with GPS Tracking - Patent Filed by Escape Alert, LLC. 3Pistoia Alliance Expands Business Development with Appointment of Carmen Nitsche 2
... photonics and renewable energy will be the focus of ... to 14, 2009 at McMaster University in Hamilton, Ontario, ... in conjunction with the event. , The 4th Nano ... the 14th Canadian Semiconductor Technology Conference (CSTC2009) will bring ...
... UC Riverside have made an accidental discovery in ... information in computers can be transported or stored. ... electrons possess that makes them behave like tiny ... of spin-based semiconductor technology such as ultrahigh-speed computers. ...
... programs give sponsors easy-to-use tools to store, mine and ... transfer knowledge base to ensure enrollment success, NEWTON, ... technology leader, announced the release of a new,product, "Center ... in-house recruitment capabilities for clinical,trial sponsors. The goal is ...
Cached Biology Technology:Joint nanotechnology forum to focus on electronics, photonics, renewable energy 2Discovery by UC Riverside physicists could enable development of faster computers 2Discovery by UC Riverside physicists could enable development of faster computers 3TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 2TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 3TCN e-Systems Offers Trial Sponsors Solutions for Creating In-House Center of Excellence in Patient Recruitment 4
Anti-ADAM-12 (Meltrin Alpha); amino terminal region; rabbit host...
Mouse monoclonal [3G8] to MDMA ( Abpromise for all tested applications)....
Fluorescein isothiocyanate (FITC) mouse anti-human IFN-alpha2 25 tests...
Rabbit Anti-melatonin (different linkage) Polyclonal Antibody...
Biology Products: