Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Whitefly secrets to success: how to become one of the world's top invasive species

09.11.2007
Chinese and Australian research team describes its findings in Science

A population of the whitefly Bemisia tabaci has become one of the world’s worst invasive pests – devastating many crops in China and elsewhere in the process – through mating behaviors that help it invade the territory of native whitefly populations, according to a new study conducted in China and Australia.

These findings will be published online by the journal Science, at the Science Express website, on 8 November, 2007. Science is published by AAAS, the nonprofit science society.

The researchers report that the invasive whiteflies are successful at least in part because they breed more when they come into contact with native whiteflies, and they also suppress the native whiteflies’ reproduction rates.

The study demonstrates that behavior can play a critical role in animal invasions, the authors say. Understanding the invasion process is important for pest management, because it helps researchers make accurate estimates of how rapidly and to what extent an alien pest can be expected to invade and displace its native relatives.

The whitefly species, B. tabaci, consists of many different genetic groups or “biotypes.” Biotype B, which probably originated in the Mediterranean-Asia Minor region and has spread through much of the world, is the one considered to be among the world’s worst agricultural pests.

The insect reached Australia in the early 1990s and China in the mid-1990s, through the transport of ornamental and other plants. It affects many different types of crops, causing damage by feeding on plant leaves and spreading viral infections.

“The invasive pest reported in our paper is currently devastating China's agriculture and environment,” said lead author Shu-Sheng Liu of Zhejiang University in Hangzhou, China. “As China's agriculture is more fragile than that of many developed countries, I expect the damage here will be much more severe and will continue for many years. I just returned from a three-day field trip, it was sad to see many tomato growers in Zhejiang are suffering complete loss of their entire crop this season due to this pest and the viruses it transmits,”.

Dr. Liu and his colleagues conducted regular field sampling of whitefly populations in Zhejiang, China, from 2004 to 2006, and in Queensland, Australia, from 1995 to 2005, to monitor the B biotype whitefly behavior as it spread and displaced native whiteflies in the two regions.

They also conducted experimental population studies, simulating the displacement process on caged cotton plants. And, they developed a specialized video recording system to observe and analyze the insects’ movement as well as the mating interactions between alien and native whiteflies on live plants.

The authors identified what they call an “asymmetry” in mating interactions between the invader and native whiteflies, whereby female biotype B whiteflies copulated with biotype B males more frequently when native whiteflies were also present. And, though male biotype B whiteflies didn’t copulate with native females, they did court the native females, interfering with copulation between native males and females.

Natasha Pinol | EurekAlert!
Further information:
http://www.aaas.org
http://www.sciencemag.org

More articles from Studies and Analyses:

nachricht WAKE-UP provides new treatment option for stroke patients | International study led by UKE
17.05.2018 | Universitätsklinikum Hamburg-Eppendorf

nachricht First form of therapy for childhood dementia CLN2 developed
25.04.2018 | Universitätsklinikum Hamburg-Eppendorf

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

When corals eat plastics

24.05.2018 | Ecology, The Environment and Conservation

Surgery involving ultrasound energy found to treat high blood pressure

24.05.2018 | Medical Engineering

First chip-scale broadband optical system that can sense molecules in the mid-IR

24.05.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>