Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Spiders check weather before take-off

28.03.2007
New research could explain why spiders flying on a strand of silk prefer cloudy days in spring or autumn for their travels. Results of the study could also lead to a non-chemical alternative to pesticides in crop management.

By casting a silk thread into the wind spiders can ride the currents for distances ranging from a few metres to hundreds of miles, carrying them out of danger or into new territory. But scientists have puzzled over why 'spider ballooning' peaks during spring and autumn but declines in windy and sunny weather, when sunshine produces more updraughts helpful for take-off.

A research team at Rothamsted Research, a sponsored institute of the Biotechnology and Biological Sciences Research Council (BBSRC), has developed a model showing that light breezes and moderately warm weather - typically in spring and autumn - provides the best spider ballooning conditions.

The team of biologists and mathematicians found the best flight weather by calculating travelling distances under different conditions of wind and sun. Hot days will produce more updraughts but without sufficient wind the spiders are not able to drift anywhere. On the other hand, if the wind becomes too strong the updraughts are disrupted, making flight impossible.

... more about:
»Pest »Weather

Since spiders prey on pests like mites and aphids, predicting spider ballooning peaks is important for crop management, explains Dr Andy Reynolds at Rothamsted Research. "Each day of the growing season around 1800 spiders land in each hectare of arable farmland after ballooning. If the farmers can predict the influx of spiders, they can reduce the amount of pesticides accordingly," says Dr Reynolds.

The research team is planning field experiments to test the model, which could be relevant also for other organisms using the wind for transport, including mites and viruses.

Professor Julia Goodfellow, BBSRC Chief Executive, said: "This research is a good example of interdisciplinary collaboration, where biologists and mathematicians together have produced new knowledge which can help lead to environment-friendly pest control."

Press Office | alfa
Further information:
http://www.bbsrc.ac.uk

Further reports about: Pest Weather

More articles from Life Sciences:

nachricht Multi-institutional collaboration uncovers how molecular machines assemble
02.12.2016 | Salk Institute

nachricht Fertilized egg cells trigger and monitor loss of sperm’s epigenetic memory
02.12.2016 | IMBA - Institut für Molekulare Biotechnologie der Österreichischen Akademie der Wissenschaften GmbH

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>