Navigation Links
Giant insects might reign if only there was more oxygen in the air

The delicate lady bug in your garden could be frighteningly large if only there was a greater concentration of oxygen in the air, a new study concludes. The study adds support to the theory that some insects were much larger during the late Paleozoic period because they had a much richer oxygen supply, said the study's lead author Alexander Kaiser.

The study, "No giants today: tracheal oxygen supply to the legs limits beetle size,'' will be presented Oct. 10 and 11 at Comparative Physiology 2006: Integrating Diversity. The conference will be held Oct. 8-11 in Virginia Beach. The research was carried out by Alexander Kaiser and Michael C. Quinlan of Midwestern University, Glendale, Arizona; J. Jake Socha and Wah-Keat Lee, Argonne National Laboratory, Argonne, IL; and Jaco Klok and Jon F. Harrison, Arizona State University, Tempe, AZ. Harrison is the principal investigator.

The Paleozoic period, about 300 million years ago, was a time of huge and abundant plant life and rather large insects -- dragonflies had two-and-a-half-foot wing spans, for example. The air's oxygen content was 35% during this period, compared to the 21% we breathe now, Kaiser said. Researchers have speculated that the higher oxygen concentration allowed insects to grow much bigger.

Tubes carry oxygen

First, a bit of background: Insects don't breathe like we do and don't use blood to transport oxygen. They take in oxygen and expel carbon dioxide through holes in their bodies called spiracles. These holes connect to branching and interconnecting tubes, called tracheae, Kaiser explained.

Whereas humans have one trachea, insects have a whole tracheal system that transports oxygen to all areas of their bodies and removes carbon dioxide. As the insect grows, tracheal tubes get longer to reach central tissue, and get wider or more numerous to meet the additional oxygen demands of a larger body.

Insects can limit oxygen flow by closing their
'"/>

Source:American Physiological Society


Page: 1 2 3

Related biology news :

1. Giant deep-sea tubeworms meal ticket comes in as a skin infection
2. A giant among minnows: Giant danio can keep growing
3. Researchers find how protein allows insects to detect and respond to pheromones
4. Experiments provide proof of how traveling in groups protects insects
5. Experiments provide proof of how traveling in groups protects insects
6. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
7. DDT-resistant insects have additional genetic advantage that helps resistance spread
8. K-State researchers study insects immune system
9. K-State researchers study gene regulation in insects
10. Gene needed for butterfly transformation also key for insects like grasshoppers
11. Value of services performed by insects tops $57 billion in US
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Giant insects might reign only there was more oxygen the air

(Date:9/18/2014)... The ability to acquire and creatively manipulate spoken language ... over the past 6 million years of human evolution ... is the best candidate gene we now have," says ... LMU. In his efforts to understand the molecular biological ... step forward. The results of his latest study, undertaken ...
(Date:9/18/2014)... stored in DNA, tiny strands of nucleic acid that ... express this genetic data, our DNA is copied into ... that perform tasks in our cells. , Several ... molecule. Unlike all other known RNAs, this molecule is ... are abundant, little has been known about how they ...
(Date:9/18/2014)... colleagues have built the first smartphone app that ... behavioral trends. In other words, your smartphone knows ... don,t -- and how that affects you. , ... depression and loneliness to their academic performance, also ... for example, to monitor mental health, trigger intervention ...
Breaking Biology News(10 mins):Language evolution: Quicker on the uptake 2Language evolution: Quicker on the uptake 3Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2New Dartmouth smartphone app reveals users' mental health, performance, behavior 2New Dartmouth smartphone app reveals users' mental health, performance, behavior 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 4
... Forest Service scientists have found that prescribed fires with the ... oak ecosystems. Forest Service researchers are helping land ... oak regeneration from acorns is a concern. "Acorns ... the most part protected from fire," says Cathryn Greenberg, Forest ...
... in JoVE , the Journal of Visualized ... spider silk from bacteria. The procedure presented in the ... standardizing a key step known as "post-spin." In this ... to increase fiber strength. These mechanical improvements produce uniform ...
... Waterlogged protein . . . Proteins, biological ... our bodies, are known to rely heavily on the ... remained unclear. In a paper published in Physical Review ... new evidence that suggests water is even more involved ...
Cached Biology News:Leaf litter and soil protect acorns from prescribed fire 2The future of biomaterial manufacturing: Spider silk production from bacteria 2Story tips from the Department of Energy's Oak Ridge National Laboratory, July 2012 2Story tips from the Department of Energy's Oak Ridge National Laboratory, July 2012 3
(Date:9/18/2014)... (PRWEB) September 18, 2014 Texas ... John Sharp, Texas A&M Health Science Center CEO ... Department of Health and Human Services (HHS), State ... a national pandemic influenza vaccine manufacturing facility in ... an anchor for the Texas A&M Biocorridor – ...
(Date:9/18/2014)... (PRWEB) September 18, 2014 On Tuesday, ... and Sen. Jim Risch for National Lab Day on ... from across the national laboratory system. Durbin and Risch ... aims to increase awareness of the reach of the ... and discoveries to address some of our nation's most ...
(Date:9/18/2014)... , Sept. 18, 2014 Research and ... "Global and Chinese Stem Cell Industry Report, 2014-2017" ... are undifferentiated biological cells that can differentiate into specialized ... stem cells. Stem cell therapy can be applied to ... system disease), nervous system diseases, damage or lesion of ...
(Date:9/18/2014)... 2014 Research and Markets ... N-acetylcysteine Industry Report 2014" report to their ... Report 2014 is a professional and in-depth study ... industry. The report provides a basic ... and industry chain structure. The N-acetylcysteine market analysis ...
Breaking Biology Technology:Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 2Lab Day Highlight Labs' Contribution to U.S. Competitiveness and Innovation 3Global and Chinese Stem Cell Industry Report, 2014-2017 2Global and Chinese Stem Cell Industry Report, 2014-2017 3Global N-acetylcysteine Industry Report 2014 2
... Inc. , a biotechnology company focused on the development ... diseases, has entered into an in-vitro diagnostics patent license ... firm. , ,Under the agreement, which will be effective ... enzymes in its products. Prodesse also receives the authority ...
... Allis, Wis. - After conducting a lengthy financial ... Healthcare has announced the resignations of three executives, ... errors in its financial statements. , ,The stock market ... as the value of Merge shares declined by 41 ...
... - The relocation of one area biotech has resulted in ... take it even higher. , ,And while GWC Technologies ... interactions on bioarrays, is not yet in the penthouse, the ... high-tech product development, according to president and CEO Tim Burland. ...
Cached Biology Technology:Merge execs step down following investigation 2Merge execs step down following investigation 3Madison biotech continues its climb 2Madison biotech continues its climb 3Madison biotech continues its climb 4
Smac/DIABLO (mouse) (CT) rabbit polyclonal antibody...
... to ADAMTS16 ( Abpromise for ... Antigen: Synthetic peptide based on ... Note: the amino acid sequence is ... 170690 SWISS ...
... Immunogen: KLH-conjugated, synthetic ... in which [ Ac K] corresponds to ... Accession Number: NM_003493 ... ~17kDa Quality Assurance: ...
synaptotagmin XIV-like [Source:RefSeq_peptide;Acc:NP_114120] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
Biology Products: