Navigation Links
Rapid evolution within single crop-growing season increases insect pest numbers
Date:8/15/2011

RIVERSIDE, Calif. New research by scientists at the University of California, Riverside shows that evolution genetic changes in populations over time can occur so rapidly in organisms that its impact on population numbers and other aspects of biology can be seen within just a few generations.

The research, published online Aug. 9 in Ecology Letters, the highest ranked journal in the field of ecology, can improve scientists' ability to predict the growth and spread of endangered species, invasive species, and disease epidemics.

Working on aphids, considered the world's most important crop pest, the researchers experimentally tested the impact of rapid evolution on wild populations within a single crop-growing season. To accomplish this, the researchers set up an experiment that prevented evolution by natural selection from occurring in some aphids while allowing it in others. They then compared the rate at which the non-evolving and evolving populations grew.

Each fall, aphids undergo one generation of sexual reproduction. The following spring, they begin multiple generations of asexual reproduction. During this period multiple clonal lineages compete, leading to changes in gene frequencies and mean trait values in the population in the process.

In their field experiment, the researchers compared replicated aphid populations that were non-evolving (single clone, thus genetically identical) to aphid populations that were potentially evolving (two clones genetically different from each other and with dissimilar growth rates).

As the populations grew, the researchers tested whether the mixed populations evolved. Counting aphids repeatedly, they found that clones rapidly changed in frequency, within 30 days or 4-5 aphid generations. They then tested the impact of this evolutionary change on the ecology of the aphids. They found that evolving populations grew in number up to 42 percent faster than non-evolving
'/>"/>

Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Sexually extravagant male birds age more rapidly, but try to hide it
2. New UC sensor promises rapid detection of dangerous heavy metal levels in humans
3. Rapid venom evolution in pit vipers may be defensive
4. Study Shows Sutro Biopharmas Biochemical Protein Synthesis Technology Enables Rapid Production and Scale-Up of Biopharmaceuticals
5. Plasticity of hormonal response permits rapid gene expression reprogramming
6. University of Tennessee scientist: Flowers rapid growth rate can be traced back 65 million years
7. Genome duplication encourages rapid adaptation of plants
8. Evolution can cause a rapid reduction in genome size
9. New imaging technique provides rapid, high-definition chemistry
10. In the best youth football teams, the first team players develop their bodies more rapidly
11. Research suggests HIV causes rapid aging in key infection-fighting cells
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Rapid evolution within single crop-growing season increases insect pest numbers
(Date:9/2/2014)... When you accidentally touch a hot oven, you rapidly ... neural circuits involved in sensing and responding to such ... players. , Duke researchers have made a surprising discovery ... pain in worms, and have built a structural model ... Nature Communications , may help direct new strategies ...
(Date:9/1/2014)... the U.S. diet showed some modest improvement in the ... in the consumption of unhealthy trans fats, but the ... and the poor. , , An unhealthy diet is ... Eating a healthy diet is an important part of ... trends in diet quality is important because it can ...
(Date:9/1/2014)... the alteration of a single nucleotidethe basic building block of DNAcould ... disability. The study appears in The Journal of Cell ... by a defect in a gene on the X chromosome called ... 230 women and 1 in 360 men carry a so-called premutation, ... the FMR1 gene is slightly longer than normal. These ...
Breaking Biology News(10 mins):Surprising new role for calcium in sensing pain 2Surprising new role for calcium in sensing pain 3Quality of US diet improves, gap widens for quality between rich and poor 2Quality of US diet improves, gap widens for quality between rich and poor 3A nucleotide change could initiate fragile X syndrome 2
... University today announced a partnership to advance the use ... alternative energy source. The effort involves entrepreneurs John ... biodiesel in Afghanistan as a means to achieve multiple ... a new, sustainable economy in the country. ...
... understand the effects of climate change on the microbial ... and the tundra in Alaska, a University of Oklahoma ... of Energy grant. According to Jizhong Zhou, OU ... Institute for Environmental Genomics, the results of these studies ...
... demand for naturally raised beef continues to increase, researchers ... raised beef can be produced effectively for this niche ... to cover additional production and transportation costs. Naturally ... traditional systems take advantage of technologies the industry offers ...
Cached Biology News:Syracuse University partners with Arden-Fox to advance DOD's Net Zero Energy Initiative 2Syracuse University partners with Arden-Fox to advance DOD's Net Zero Energy Initiative 3Can naturally raised beef find its place in the industry? 2
(Date:8/31/2014)... N.J. , Aug. 31, 2014 Wockhardt ... Drug Discovery program in Anti-Infective research when two of ... coveted Qualified Infectious Disease Product (QIDP) status from U.S. ... to drugs which act against pathogens which have a ... are identified by Centre for Disease Control (a top ...
(Date:8/31/2014)... (PRWEB) August 31, 2014 This ... current state of the Epoxy Hardener industry ... basic overview of the industry, including definitions, applications ... Chinese domestic market analysis are provided with a ... of the market. A comparison between the international ...
(Date:8/29/2014)... Electronic circuits are based on electrons, but one of ... photonic circuits, i.e. circuits based on light (photons) instead ... to create a stream of single photons and control ... sorts of attempts to achieve this control, but now ... creating a steady stream of photons emitted one at ...
(Date:8/29/2014)... 29, 2014 Pittcon is pleased to ... colleague Koichiro Matsuda, Horiba Scientific, have organized a session ... 2014. JASIS , Asia’s largest analytical and scientific ... Makuhari Messe, Japan. , The four speakers in ... from Single Molecules to Single Cells” will present their ...
Breaking Biology Technology:U.S. FDA Grants QIDP Status for Wockhardt Anti-Infective Drug Discovery Program 2U.S. FDA Grants QIDP Status for Wockhardt Anti-Infective Drug Discovery Program 3Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3Breakthrough in light sources for new quantum technology 2Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2
... Wisconsin landed a federal research laboratory too long, many observers might ... Madison in 1910 when Gifford Pinchot, the first chief of the ... National Wildlife Health Center , established in Madison in 1975, has ... race against bird flu. , ,The latest addition is the ...
... NimbleGen Systems scientist Thomas Albert will lead a ... microarray technology in DNA sequence analysis, the company announced. ... be the lead investigator on a two-year, $415,000 grant ... million Cancer Genome Atlas pilot project. , ,His work ...
... the scandals of WorldCom, ENRON, and TYCO were heartless and greedy, ... on this video make them look like saints. Why? Because the ... make a living to support their families. , ,Think about all ... of years that have not been able to find a good ...
Cached Biology Technology:Federal bioenergy lab will give Wisconsin a chance to shine 2Federal bioenergy lab will give Wisconsin a chance to shine 3Federal bioenergy lab will give Wisconsin a chance to shine 4A disgusting video: U.S. companies sell out Americans 2A disgusting video: U.S. companies sell out Americans 3A disgusting video: U.S. companies sell out Americans 4
Borosilicate Glass. Certified for use with the Beacon 2000 Systems, 1,000 tubes/case...
... Engineered with new technology incorporating ... for unsurpassed flexibility, the new Varian ... advanced spectrometer available today., ,The Varian ... each transmitter and receiver channel, providing ...
Luminometers...
... Dr. P Set from different human ... More organs maybe available upon request. ... items from the whole set, and ... price. All Dr. P Set ...
Biology Products: