Navigation Links
After more than 100 years apart, webworms devastate New Zealand parsnips
Date:1/30/2008

What could be lower than the lowly parsnip, a root once prized for its portable starchiness but which was long ago displaced by the more palatable potato? Perhaps only the parsnip webworm gets less respect. An age-old enemy of the parsnip, the webworm is one of very few insects able to overcome the plants chemical defenses. The tenacious parsnip webworm has followed the weedy version of the parsnip in its transit from its ancestral home in Eurasia to Europe, North America and most recently New Zealand.

The long association of the parsnip (Pastinaca sativa) and parsnip webworm (Depressaria pastinacella) offers a unique window on the complex interaction of plant and insect enemies, according to a study appearing this week in the Proceedings of the National Academy of Sciences. And the recent appearance of parsnip webworms in New Zealand, more than 100 years after the parsnip first arrived there, offers the best view yet of how these species influence one another.

The research team, led by University of Illinois entomology professor and department head May Berenbaum, made two key findings. First, the researchers found, the New Zealand parsnips had significantly lower levels of certain chemical defenses than parsnips growing in Europe and North America, where webworms are a constant threat. Second, the New Zealand parsnip webworms were dramatically affecting the plants ability to reproduce. The webworm caterpillars eat the parsnip flowers and burrow into their stalks.

In certain populations affected by webworms, 75 percent of the plants were completely devoid of any reproductive parts, said Art Zangerl, a senior research scientist in the department of entomology and co-author on the paper. The affected plants were contributing zero fitness, which is really dramatic. We dont often see that.

Fitness is a measure of a species ability to successfully reproduce. Environmental factors that reduce the fitness of an
'/>"/>

Contact: Diana Yates
diya@uiuc.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Twinkle after-effect can help retinal patients detect vision loss quickly and cheaply
2. After drought, ponds keep up with the Joneses
3. Expecting an afternoon nap can reduce blood pressure
4. Simulation reveals how body repairs balance after damage
5. Clearance of hepatitis C viral infection after liver transplantation
6. Geron Demonstrates hESC-derived cardiomyocytes improve heart function after myocardial infarction
7. 4 health behaviors can add 14 extra years of life
8. Molecular Biology of the Cell celebrates 25 years of publication
9. Atomic bomb survivor, scientists mark 60 years of long-term radiation study
10. Rodent fossils allows to determine climate of the Iberian Peninsula 6 million years ago
11. Fossil record reveals elusive jellyfish more than 500 million years old
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
After more than 100 years apart, webworms devastate New Zealand parsnips
(Date:8/27/2014)... 27, 2014  WaferGen Bio-systems, Inc. (NASDAQ: WGBS) today ... public offering of units of common stock and warrants ... proceeds of $20 million, prior to deducting underwriting discounts ... The shares and warrants are immediately separable and will ... in the offering consists of 2,000 shares of common ...
(Date:8/27/2014)... A big step in understanding the mysteries of the ... three analyses that provide the most detailed comparison yet ... and human function. , The research, appearing August ... how the information encoded in the three species, genomes ... are organized into chromosomes. , The results add billions ...
(Date:8/27/2014)... , Aug. 27, 2014 Reportlinker.com ... available in its catalogue: Law Enforcement ... http://www.reportlinker.com/p02316674/Law-Enforcement-Biometrics-Market-in-North-America-2014-2018.html About Biometrics ... individuals on the basis of their physical or ... of both physiological traits such as fingerprints, face ...
Breaking Biology News(10 mins):WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 2WaferGen Bio-Systems Announces Successful Completion of Public Offering Raising $20 Million 3Encyclopedia of how genomes function gets much bigger 2Encyclopedia of how genomes function gets much bigger 3Encyclopedia of how genomes function gets much bigger 4Law Enforcement Biometrics Market in North America 2014-2018 2Law Enforcement Biometrics Market in North America 2014-2018 3Law Enforcement Biometrics Market in North America 2014-2018 4Law Enforcement Biometrics Market in North America 2014-2018 5
... research team led by Edward Yu of Iowa State University ... pumps that remove heavy metal toxins from bacteria, making them ... the Sept. 23 issue of the journal Nature . ... of physics and astronomy, of biochemistry, biophysics and molecular biology ...
... COLUMBUS, Ohio While birds living in urban areas face ... mean urban birds face more danger from nest robbers. ... 2004 to 2009 found that, as expected, rural areas that ... cats, and crows, also showed lower rates of nest survival. ...
... of plant and animal species generally increases from the North ... isn,t true for soil bacteria, according to a new study ... that the rules determining the patterns for plant and animal ... Grogan. The finding is important because one of the ...
Cached Biology News:Iowa State, Ames Lab researchers identify structure that allows bacteria to resist drugs 2More predators doesn't equal more danger for urban bird nest 2
(Date:8/27/2014)... mysteries is how plants survive impact by the ... rays, while using this energy for photosynthesis. The ... plant,s blades quickly dissipate the energy throughout the ... at DTU Physics have now managed to successfully ... bacteria contain light-absorbing proteins which play a role ...
(Date:8/27/2014)... , Aug. 27, 2014  A novel ... to help physicians better identify early-stage disease, when ... disability, according to a new study in The ... Diagnostics (NYSE: DGX ) and other ... 14-3-3eta protein outperformed conventional antibody-serum testing, including rheumatoid ...
(Date:8/27/2014)... , Aug. 27, 2014 Research and ... "Global Enzyme for Pulp & Paper Industry Report 2014" ... Global Enzyme for Pulp & Paper Industry Report 2014 ... state of the global enzyme for pulp & paper ... of the industry including definitions, classifications, applications and industry ...
(Date:8/27/2014)... FL (PRWEB) August 27, 2014 BIOEQUA, ... applied through the use of a handheld spray, has ... the United States. , The brand began with ... BIOEQUA researchers were surprised to learn that the application ... made extremely small and delivered directly to skin's basal ...
Breaking Biology Technology:DTU researchers film protein quake for the first time 2Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 2Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 3Novel Biomarker Detects Early Rheumatoid Arthritis Better than Conventional Methods Alone, According to Journal of Rheumatology Study 4Global Enzyme for Pulp & Paper Industry Report 2014 2BIOEQUA'S EQUA ESSENTIAL Product Line Redefines Skin Care & Now Available in America 2
... life sciences nanotechnology company, has received a $1.6 million ... , ,The Small Business Innovation Research grant is for ... technology to enable faster screening of drugs for treatment ... liquid crystals to measure topography on a nanoscopic scale. ...
... Bruker AXS , a supplier of X-ray solutions for life ... announced on Tuesday the introduction of a new detector and ... systems were unveiled at the 2005 International Union of Crystallography ... imaging detector for macromolecular X-ray crystallography, was designed with zero ...
... investors and government representatives have suggested a series of ... stimulate investments in high-growth industries. , ,Their suggestions were ... more on that hearing, read: , Regulations still ... is a list of some of the key recommendations: ...
Cached Biology Technology:Suggestions offered to foster high-growth business investment 2
... Validation Service enables early selection of ... by providing quantitative data for sensitivity, ... each antibody. Furthermore quantitative antibody fingerprints ... activity of your antibodies., The full-service ...
... fluorescent microscopy-based imaging system that accurately counts ... calculates cell viability, in a single test. ... variability associated with the subjective interpretation of ... EasyCount ViaSure Kit, up to six tests ...
... new generation of microarrays to detect alternative ... to rapidly elucidate alternatively spliced events in ... drug discovery. The service combines ExonHits proprietary ... customized analysis with Agilents robust microarray platform. ...
... The new Adept CE 4100 ... provides superb flow precision, with software drive ... rates from 0.001-10mL/min are selectable in 0.001mL ... inserts, are inert and bio-compatible., Pumps may ...
Biology Products: