Navigation Links
Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

A new study investigating the respiratory system of insects may have solved a mystery that has intrigued physiologists for decades: why insects routinely stop breathing for minutes at a time.

Challenging previous theories, researchers at UC Irvine and Humboldt University propose that insects such as grasshoppers, moths, butterflies, some types of fruit flies, beetles and bugs close off their respiratory systems periodically to keep out excess oxygen, thus preventing damage to their tissues.

Timothy Bradley, professor of ecology and evolutionary biology at UCI, and Stefan Hetz, assistant professor of physiology at Humboldt University, Germany, report their findings in the Feb. 3 issue of Nature.

The insect respiratory system is designed to accommodate occasions when the insect is active. For example, a grasshopper is most active when it flies. When the grasshopper is inactive and resting, however, it continues to breathe in oxygen at the same high volume it uses while flying. The result is excess internal oxygen that can cause oxidative damage -- the destruction of biomaterial due to excess oxygen -- to tissues. To protect their bodies, insects like grasshoppers discontinue breathing.

"We propose that most insects stop breathing in order to lower their internal oxygen concentration to physiologically safe levels, and that they then substantially reduce gas exchange to maintain the oxygen at these safe values," Bradley said. "This hypothesis explains the respiratory pattern of insects in different environments in ways that previous models can't."

Two previous models for explaining why insects punctuate their breathing with periods of closure are (1) such discontinuous breathing reduces water loss and (2) it enables insects to rid their bodies of carbon dioxide, respiration's byproduct, when the insects are underground. As is true for miners, insects, while underground, are faced with high-carbon-dioxide and low-oxygen amounts, ne
'"/>

Source:University of California - Irvine


Page: 1 2 3

Related biology news :

1. Researchers find how protein allows insects to detect and respond to pheromones
2. Experiments provide proof of how traveling in groups protects insects
3. Experiments provide proof of how traveling in groups protects insects
4. DDT-resistant insects have additional genetic advantage that helps resistance spread
5. K-State researchers study insects immune system
6. K-State researchers study gene regulation in insects
7. Gene needed for butterfly transformation also key for insects like grasshoppers
8. Value of services performed by insects tops $57 billion in US
9. Giant insects might reign if only there was more oxygen in the air
10. Why do insects like to eat some plants more than others?
11. Falling ants glide back to trunk to avoid dangers of forest floor
Post Your Comments:
(Date:3/10/2015)... -- Transforming How We Look at Medicine ... Human Space Flight" by Michael A. Schmidt ... was recently featured by Springer Science Media, highlighting the most ... Specifically, "Personalized Medicine in Human Space Flight" was among ... and 2014 from Springer in the journal Metabolomics ...
(Date:3/10/2015)... Conn. , March 10, 2015  NXT-ID, ... ("NXT-ID" or the "Company"), a biometric authentication company ... the company,s Wocket™ smart wallet has been named ... by Rethink Modern. Rethink Modern ( ... and innovative items for your home and lifestyle that have ...
(Date:3/4/2015)... Research and Markets ( http://www.researchandmarkets.com/research/48tj8z/global_biometrics ... "Global Biometrics Market Forecast and Opportunities, 2020" ... for biometric authentication systems is projected to grow ... The driving forces for this highly ... projects and constant development in technology. In 2014, ...
Breaking Biology News(10 mins):"Personalized Medicine in Human Space Flight" Listed Among Most Influential Papers of 2013 and 2014 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4Global Biometrics Market Forecast and Opportunities, 2020 2Global Biometrics Market Forecast and Opportunities, 2020 3
... Montreal, QC (CNW) February 17, 2010 A Discussion ... in knowledge creation over the past three decades in ... extracted from the Web of Science (Thomson Reuters) database ... to 2009), the paper examines the effects of geopolitical ...
... and people alike face critical choices as they ... babies--or many small, poorly-provisioned ones. Different species make ... of life forms: Darwin,s "endless forms most beautiful. ... the Smithsonian Tropical Research Institute argues that these ...
... biological sciences, mankind has struggled to comprehend the relationships ... arthropods. Now, a team of researchers, including Dr. Joel ... Museum of Los Angeles County (NHM), has finished a ... arthropods, answering many questions that defied previous attempts to ...
Cached Biology News:Wall, war, wealth: 30 years of science 2Stress and trade-offs explain life's diversity: New Smithsonian model 2Where did insects come from? 2Where did insects come from? 3
(Date:4/1/2015)... UT (PRWEB) April 01, 2015 ... allowing Biosearch to make, use, market and sell ... also licenses CoPrimers™ technology to Biosearch for its ... design greatly reduces the occurrence of primer-dimers, without ... in increased sensitivity and lower test prices. ...
(Date:4/1/2015)... MANCHESTER, N.H. , April 1, 2015 ... conference, IGNITE: The Business of Better Medicine . ... necessary business knowledge to develop a thriving and fulfilling ... at the Omni La Costa Resort and Spa, the ... where attendees can expect to accomplish key projects and ...
(Date:4/1/2015)... GAITHERSBURG, Md. , April 1, 2015  VLP ... biotechnology company focusing on the research and development of ... based upon a novel and proprietary vaccine technology, today ... the Institute of Tropical Medicine at Nagasaki ... The collaboration will facilitate VLP,s research and development of ...
(Date:4/1/2015)... -- Goldman Small Cap Research, a stock market research ... announced today that it has issued a new article ... traded clinical stage biotechnology company focused on developing and ... sponsored research article, along with disclosures and disclaimers, or ... www.GoldmanResearch.com .  In the article on ...
Breaking Biology Technology:Biosearch and Co-Diagnostics Sign Cooperative Primers Agreement 2Biosearch and Co-Diagnostics Sign Cooperative Primers Agreement 3Emerson Ecologics Announces First Annual Conference for Integrative Healthcare Practitioners 2Emerson Ecologics Announces First Annual Conference for Integrative Healthcare Practitioners 3VLP Therapeutics Enters Collaboration with Institute of Tropical Medicine, Nagasaki University 2VLP Therapeutics Enters Collaboration with Institute of Tropical Medicine, Nagasaki University 3Flurry of Biotech Mergers and Acquisitions Bodes Well for PharmaCyte Biotech 2Flurry of Biotech Mergers and Acquisitions Bodes Well for PharmaCyte Biotech 3Flurry of Biotech Mergers and Acquisitions Bodes Well for PharmaCyte Biotech 4
... 2 Researchers at Fred Hutchinson Cancer,Research Center have ... the first systematic surveillance program of men with prostate,cancer ... to wait and when,to treat the disease. The project ... Institute., Peter Nelson, M.D., of the Hutchinson Center,s ...
... Roche is pleased to announce that,Grace Ju, Ph.D., research ... an "Outstanding Woman of Science" by the New Jersey,Association ... Thank You,Research Gala held May 1 at the Bridgewater ... at this year,s event, which is also,marking the 20th ...
... Motion Preservation, MARQUETTE, Mich., May 2 ... devices, announced today the,successful human implantation of its ... Arthroplasty Device. The surgeries were,performed by Drs. Hansen ... China, on,patients with degenerative disc disease (DDD) otherwise ...
Cached Biology Technology:When to Wait and When to Treat? New Program Will Search for Biomarkers in Men With Prostate Cancer to Help Find an Answer 2When to Wait and When to Treat? New Program Will Search for Biomarkers in Men With Prostate Cancer to Help Find an Answer 3Roche Research Director Grace Ju Hailed as NJABR 'Outstanding Woman of Science' 2Roche Research Director Grace Ju Hailed as NJABR 'Outstanding Woman of Science' 3Pioneer(R) Surgical Technology Announces First Human Implants of its NuNec(TM) Cervical Arthroplasty Device 2
The thermal printer, 120 V, is used to record fluorescence data acquired with the VersaFluor fluorometry systems. The printer includes a cable and power adaptor....
The Sony UPD895 printer is used to print data captured with the Gel Doc XR and ChemiDoc XRS gel documentation systems as well as the VersaDoc imaging systems....
This thermal printer, 120 V, provides a permanent record of the preprogrammed method and run data for the PROTEAN IEF cell. Includes cable and power adaptor....
... to purify genomic DNA from plants in 96 well ... a deep well plate using large zirconia beads optimized ... velocity plate shaker (available through Mo Bio). Cells are ... spin filter plate. The DNA is washed and then ...
Biology Products: