Featured Research

from universities, journals, and other organizations

Biological Invasions Can Begin With Just One Insect

Date:
September 13, 2007
Source:
Public Library of Science
Summary:
A new study has shown that a lone insect can initiate a biological invasion. The scientists examined patterns of genetic diversity in both native European and invasive North American populations of a solitary bee. They concluded that the invasion was most likely founded by one mated female.

A new study by York University biologists Amro Zayed and Laurence Packer has shown that a lone insect can initiate a biological invasion.

Zayed, a recent graduate of Packer's lab, examined patterns of genetic diversity in both native European and invasive North American populations of a solitary bee. He concluded that the invasion was most likely founded by one mated female.

"This is a shocking result, especially since bees suffer from huge genetic problems in small populations," says Zayed, now a postdoctoral fellow in the Department of Entomology at the University of Illinois.

"We're now seeing that the introduction of even one single insect can cause a potentially costly invasion, so we have to be extremely vigilant with reducing the number of animals that are unintentionally transported around the globe," he says.

The study contradicts a popular theory of invasive biology: the more individuals introduced to an area, the higher the success of the invasion. This concept is commonly referred to as the "propagule pressure hypothesis."

Zayed adds that numbers are not the only factor controlling the success of invasions. "Chance and the specific characteristics of invasive species and their introduced habitats can be more important," he says.

Packer, a professor in York's Department of Biology, notes that exotic invasive species are considered a major threat to biodiversity conservation, and can cause huge economic losses.

"Understanding how exotic species establish and spread in their new habitats is the first step to solving the invasive species problem," Packer says.

  The study was published recently in the open access journal PLoS One.

Citation: Zayed A, Constantin SēA, Packer L (2007) Successful Biological Invasion despite a Severe Genetic Load. PLoS One 2(9): e868. doi:10.1371/journal.pone.0000868


Story Source:

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


Cite This Page:

Public Library of Science. "Biological Invasions Can Begin With Just One Insect." ScienceDaily. ScienceDaily, 13 September 2007. <www.sciencedaily.com/releases/2007/09/070911202453.htm>.
Public Library of Science. (2007, September 13). Biological Invasions Can Begin With Just One Insect. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2007/09/070911202453.htm
Public Library of Science. "Biological Invasions Can Begin With Just One Insect." ScienceDaily. www.sciencedaily.com/releases/2007/09/070911202453.htm (accessed April 21, 2014).

Share This



More Plants & Animals News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Breakfast Foods Are Getting Pricier

Breakfast Foods Are Getting Pricier

AP (Apr. 21, 2014) — Breakfast is now being served with a side of sticker shock. The cost of morning staples like bacon, coffee and orange juice is on the rise because of global supply problems. (April 21) Video provided by AP
Powered by NewsLook.com
Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) — A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) — Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) — Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. 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