Featured Research

from universities, journals, and other organizations

Ladybugs taken hostage by wasps

Date:
November 26, 2009
Source:
University of Montreal
Summary:
Are ladybugs being overtaken by wasps? An entomologist is investigating a type of wasp present in Quebec that forces ladybugs to carry their larvae. These wasps lay their eggs on the ladybug's body, a common practice in the insect world, yet they don't kill their host.

Ladybug. Are ladybugs being overtaken by wasps?
Credit: iStockphoto/Klemens Wolf

Are ladybugs being overtaken by wasps? A Université de Montréal entomologist is investigating a type of wasp (Dinocampus coccinellae) present in Quebec that forces ladybugs (Coccinella maculata) to carry their larvae. These wasps lay their eggs on the ladybug's body, a common practice in the insect world, yet they don't kill their host.

Related Articles


"What is fascinating is that the ladybug is partially paralyzed by the parasite, yet it's eventually released unscathed," says Brodeur, who is also a biology professor and Canada Research Chair in Biocontrol. "Once liberated, the ladybug can continue to eat and reproduce as if nothing happened."

A larva cocoons between the ladybug's legs and moves on once it matures. Brodeur is currently studying the phenomenon at the Université de Montréal Institut de recherche en biologie végétale. He hopes to understand the cycle duration, success rate and the host-parasite relationship.

"Can the ladybug refuse to be used? We don't know. Our plan is to reproduce a variety of situations in the lab and see which is most favourable to reproduction," he says.

Wasps aren't alone in offloading their offspring, stresses Brodeur, since magpies look after the chicks of great spotted cuckoos. The cuckoo visits the nests where it leaves its young and kills those magpies that don't protect their offspring. And a variety of parasite behaviours exist in the insect world, yet the dynamic between the Dinocampus coccinellae and Coccinella maculata is unusual and one Brodeur hopes to better understand.


Story Source:

The above story is based on materials provided by University of Montreal. Note: Materials may be edited for content and length.


Cite This Page:

University of Montreal. "Ladybugs taken hostage by wasps." ScienceDaily. ScienceDaily, 26 November 2009. <www.sciencedaily.com/releases/2009/11/091117102046.htm>.
University of Montreal. (2009, November 26). Ladybugs taken hostage by wasps. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2009/11/091117102046.htm
University of Montreal. "Ladybugs taken hostage by wasps." ScienceDaily. www.sciencedaily.com/releases/2009/11/091117102046.htm (accessed November 24, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Monday, November 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Buzz60 (Nov. 24, 2014) — A Swedish Adventure racing team travels to try and win a world title, but comes home with something way better: a stray dog that joined the team for much of the grueling 430-mile race. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) — A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com
Winter Can Cause Depression — Here's How To Combat It

Winter Can Cause Depression — Here's How To Combat It

Newsy (Nov. 23, 2014) — Millions of American suffer from seasonal depression every year. It can lead to adverse health effects, but there are ways to ease symptoms. Video provided by Newsy
Powered by NewsLook.com
Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

AFP (Nov. 23, 2014) — The arable district of Kenema in Sierra Leone -- at the centre of the Ebola outbreak in May -- has been under quarantine for three months as the cocoa harvest comes in. Duration: 01:32 Video provided by AFP
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:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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