Navigation Links
Fish may actually feel pain and react to it much like humans
Date:4/30/2009

different behaviors.

"The fish given the morphine acted like they always had: swimming and being fish," Garner said. "The fish that had gotten saline - even though they responded the same in the test - later acted different, though. They acted with defensive behaviors, indicating wariness, or fear and anxiety."

Nordgreen said those behavioral differences showed that fish can feel both reflexive and cognitive pain.

"The experiment shows that fish do not only respond to painful stimuli with reflexes, but change their behavior also after the event," Nordgreen said. "Together with what we know from experiments carried out by other groups, this indicates that the fish consciously perceive the test situation as painful and switch to behaviors indicative of having been through an aversive experience."

Garner believes that the morphine blocked the experience of pain, but not behavioral responses to the heat stimulus itself - either because the responses were reflexive or because the morphine blocked the experience of pain, but not the experience of an unusual stimulus.

"If you think back to when you have had a headache and taken a painkiller, the pain may go away, but you can still feel the presence or discomfort of the headache," Garner said.

Those with saline both experienced pain in the test, as well as responding to it, and were able to cognitively process that pain, thus causing the later fear and anxiety.

"The goldfish that did not get morphine experienced this painful, stressful event. Then two hours later, they turned that pain into fear like we do," Garner said. "To me, it sounds an awful lot like how we experience pain."

The findings could raise questions about slaughter methods and how fish are handled in research. Garner said standards of care could be revisited to ensure fish are being treated humanely.


'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology news :

1. Get smart about what you eat and you might actually improve your intelligence
2. Surprise -- cholesterol may actually pose benefits, study shows
3. Researchers observe evolution chain reaction
4. Researchers first to see reactive oxygen species in vital enzyme
5. Researchers create new class of fluorescent dyes to detect reactive oxygen species in vivo
6. Pitt, NETL researchers report molecular chain reaction thought to be impossible
7. Novel bioreactor enhances interleukin-12 production in genetically modified tobacco plants
8. Researchers shed new light on catalyzed reactions
9. Enzyme detectives uncover new reactions, products
10. Study helps explain how allergic reactions are triggered
11. New technique captures chemical reactions in a single living cell at unprecedented resolution
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/20/2013)... articles posted online ahead of print 9 ... of geoscience subdisciplines, including minerals exploration, archaeology, planetary ... include Siberia; the Sumatran subduction margin; the Monte ... and the Southeastern U.S. Atlantic Margin. Brief highlights ... tectonics;, 2. The clear fingerprint of ice ages ...
(Date:5/19/2013)... electricity-producing bacteria that can grow using hydrogen gas as ... sole source of carbon. Researchers at the University ... General Meeting of the American Society for Microbiology. , ... on hydrogen," says Amit Kumar, a researcher on the ... the Lovley Lab Group at the university. , Under ...
(Date:5/18/2013)... 19, 2013) The AGA Research Foundation is honored ... Augustyn Award in Digestive Cancer, which will support Andrew ... at the University of Pennsylvania, Philadelphia, as he furthers ... development, regeneration and cancer progression. , "The AGA Research ... of two distinguished clinicians and AGA Legacy Society members," ...
Breaking Biology News(10 mins):New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 2New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 3New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 4New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 5New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 6New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 7New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 8New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 9New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 10New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More 11AGA Research Foundation grant furthers digestive cancer research 2
... 2011 Employing technology that reads the entire DNA ... (TGen) and the Technical University of Denmark (DTU) have ... that killed more than 6,000 people and sickened 300,000. ... billions of chemical bases in DNA, TGen and DTU ...
... Salmonella have a sneaky way of making minor alterations to ... a fascinating discovery made at Ohio State University, which is ... Biology. This discovery shows how bacteria make tweaks in ... team includes research scientist Herve Roy, who joined the University ...
... BOSTON -- Aug. 22, 2011 -- Researchers at the Joslin ... mitochondria of cells is decreased in the skeletal muscle of ... development of drugs to boost the activity of this enzyme ... in published online today in the Proceedings of the National ...
Cached Biology News:TGen and DTU researchers track source of Haitian cholera outbreak 2TGen and DTU researchers track source of Haitian cholera outbreak 3Newfound hijacked proteins linked to salmonella virulence 2Joslin researchers identify new target for treatment of type 2 diabetes and prediabetes 2
(Date:5/20/2013)... KENNESAW, Ga. , May 20, 2013  MiMedx ... developer, manufacturer and marketer of patent protected regenerative biomaterials ... that it has secured a revolving line of credit ... facility, which is secured by the Company,s accounts receivable ... million through May 1, 2014.  The facility will be ...
(Date:5/20/2013)... New York, NY (PRWEB) May 20, 2013 ... My Cleaning Products said that although bed bugs need to ... elimination process will not compromise a person's health. And so ... a guide how to get rid of bed bugs ... recommended its non-pesticide bed bug spray it called Bed Bug ...
(Date:5/20/2013)... PA (PRWEB) May 20, 2013 Interventional ... Allegheny General Hospital (AGH) Cardiovascular Institute have ... coronary artery disease (CAD) over the past ... such as balloon angioplasty and coronary artery stent implantation. ... once again play a prominent role in the study ...
(Date:5/20/2013)... May 20, 2013 In Early 2013, ... field of biotoxin related illnesses , announced his vision ... able to advance his protocol for treating Chronic Inflammatory ... the third physician to achieve certification in the Shoemaker ... able to practice the Shoemaker Protocol in other parts ...
Breaking Biology Technology:New Non Pesticide Discovery on How to Get Rid of Bed Bugs Tipped by My Cleaning Products 2Allegheny General Hospital Cardiovascular Institute Becomes Exclusive Pittsburgh Site for Study of Novel Coronary Artery Disease Device 2Allegheny General Hospital Cardiovascular Institute Becomes Exclusive Pittsburgh Site for Study of Novel Coronary Artery Disease Device 3Allegheny General Hospital Cardiovascular Institute Becomes Exclusive Pittsburgh Site for Study of Novel Coronary Artery Disease Device 4Dr. Ritchie Shoemaker Certifies Third Physician in His Treatment Protocol for Chronic Inflammatory Response Syndrome (CIRS) 2
...  HistoRx recently licensed from Yale University a new clinical ... doctors treating patients with melanoma to identify a subset ... in their lymph nodes, have a 40% risk of ... quantitative IHC testing method that enables measurement of protein ...
... 2011 Ambry Genetics, a global leader in ... they have officially launched their Illumina MiSeq Next-Gen ... adapter of Illumina sequencing systems since 2007 and ... processing thousands of samples. (Logo:  ...
... BOSTON, Dec. 21 , 2011  To help ... challenging regulatory and commercial environment, PAREXEL International ... global biopharmaceutical services provider, today announced that it ... clinical operations and outsourcing leaders worldwide.  During these ...
Cached Biology Technology:HistoRx Licenses Melanoma Assay from Yale University 2Ambry Genetics Launches Illumina MiSeq Next-Gen Sequencing Services 2PAREXEL Introduces Executive Briefing Series on Proven Practices to Assist Emerging and Mid-size Biopharma in Achieving Better Outcomes 2PAREXEL Introduces Executive Briefing Series on Proven Practices to Assist Emerging and Mid-size Biopharma in Achieving Better Outcomes 3PAREXEL Introduces Executive Briefing Series on Proven Practices to Assist Emerging and Mid-size Biopharma in Achieving Better Outcomes 4