Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Lychnis moth (Hadena bicruris) lays more eggs in isolated areas

14.02.2005


The Lychnis moth (Hadena bicruris) is laying more eggs on white campion (Silene latifolia), due to the increasing fragmentation of the countryside. Dutch researcher Jelmer Elzinga studied how many white campion seeds were eaten by Lychnis moth caterpillars at various locations along the River Waal.



Elzinga discovered that at small and isolated locations, Lychnis moth caterpillars consumed more white campion seeds. This increased consumption was thought to be due to a decrease in the number of ichneumon flies, which kill the caterpillars. However, Elzinga demonstrated that this hypothesis is not correct.

Upon hatching, Lychnis caterpillars eat the seeds of the white campion on a massive scale. Half of these caterpillars die prematurely due to attacks by ichneumon flies. The increasing fragmentation of the countryside means that areas of natural habitat are becoming smaller and more isolated. Moths, such as the Lychnis, are thought to easily spread between the various fragments whereas the much smaller ichneumon flies cannot.


Based on this knowledge, Jelmer Elzinga investigated whether caterpillars more frequently attacked white campion in strongly fragmented areas. It was expected that the poor distribution of the ichneumon flies would lead to less caterpillars dying, and therefore the plants being attacked more.

Elzinga discovered that the white campion was indeed attacked more in small and isolated growing areas. He also found that in such areas, fewer caterpillars were attacked by ichneumon flies and fewer ichneumon fly species were present.

However, ichneumon flies only attack the caterpillars when they are almost fully grown. Therefore, the poor distribution of the ichneumon flies could not explain the increased consumption of the seeds. Elzinga found that this extra consumption was due to the Lychnis moth laying more eggs in isolated growing locations of the white campion.

The research was funded by the Netherlands Organisation for Scientific Research.

Dr A. (Arjen) Biere | EurekAlert!
Further information:
http://www.nwo.nl

More articles from Life Sciences:

nachricht Tag it EASI – a new method for accurate protein analysis
20.06.2018 | Max-Planck-Institut für Biochemie

nachricht How to track and trace a protein: Nanosensors monitor intracellular deliveries
19.06.2018 | Universität Basel

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Creating a new composite fuel for new-generation fast reactors

20.06.2018 | Materials Sciences

Game-changing finding pushes 3D-printing to the molecular limit

20.06.2018 | Materials Sciences

Could this material enable autonomous vehicles to come to market sooner?

20.06.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>