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 July 29, 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 July 29, 2014).

Share This




More Plants & Animals News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Ebola Virus Threatens West Africa

Deadly Ebola Virus Threatens West Africa

AP (July 28, 2014) West African nations and international health organizations are working to contain the largest Ebola outbreak in history. It's one of the deadliest diseases known to man, but the CDC says it's unlikely to spread in the U.S. (July 28) Video provided by AP
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Newsy (July 28, 2014) The asteroid that killed the dinosaurs struck at the worst time for them. A new study says that if it hit earlier or later, they might've survived. Video provided by Newsy
Powered by NewsLook.com
Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
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