Featured Research

from universities, journals, and other organizations

Lychnis Moth (Hadena Bicruris) Lays More Eggs In Isolated Areas

Date:
February 18, 2005
Source:
Netherlands Organization For Scientific Research
Summary:
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.

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.


Story Source:

The above story is based on materials provided by Netherlands Organization For Scientific Research. Note: Materials may be edited for content and length.


Cite This Page:

Netherlands Organization For Scientific Research. "Lychnis Moth (Hadena Bicruris) Lays More Eggs In Isolated Areas." ScienceDaily. ScienceDaily, 18 February 2005. <www.sciencedaily.com/releases/2005/02/050213135553.htm>.
Netherlands Organization For Scientific Research. (2005, February 18). Lychnis Moth (Hadena Bicruris) Lays More Eggs In Isolated Areas. ScienceDaily. Retrieved August 28, 2014 from www.sciencedaily.com/releases/2005/02/050213135553.htm
Netherlands Organization For Scientific Research. "Lychnis Moth (Hadena Bicruris) Lays More Eggs In Isolated Areas." ScienceDaily. www.sciencedaily.com/releases/2005/02/050213135553.htm (accessed August 28, 2014).

Share This




More Plants & Animals News

Thursday, August 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Super Healthful Fruits and Vegetables: Which Are Best?

Super Healthful Fruits and Vegetables: Which Are Best?

Ivanhoe (Aug. 27, 2014) We all know that it is important to eat our fruits and vegetables but do you know which ones are the best for you? Video provided by Ivanhoe
Powered by NewsLook.com
Bad Memories Turn Good In Weird Mouse Brain Study

Bad Memories Turn Good In Weird Mouse Brain Study

Newsy (Aug. 27, 2014) MIT researchers were able to change whether bad memories in mice made them anxious by flicking an emotional switch in the brain. Video provided by Newsy
Powered by NewsLook.com
Do Couples Who Smoke Weed Together Stay Together?

Do Couples Who Smoke Weed Together Stay Together?

Newsy (Aug. 27, 2014) A study out of University at Buffalo claims couples who smoke marijuana are less likely to experience intimate partner violence. Video provided by Newsy
Powered by NewsLook.com
Panda Might Have Faked Pregnancy To Get Special Treatment

Panda Might Have Faked Pregnancy To Get Special Treatment

Newsy (Aug. 27, 2014) A panda in China showed pregnancy symptoms that disappeared after two months of observation. One theory: Her pseudopregnancy was a ploy for perks. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins