Featured Research

from universities, journals, and other organizations

Invasive Marine Animals Get Bigger

Date:
July 29, 2003
Source:
University Of California - Davis
Summary:
Animals and plants that are innocuous in their home environment can become rampaging pests when they invade a new area. A new study shows that for a wide group of marine pests, invasion is coupled with a marked increase in body size.

Animals and plants that are innocuous in their home environment can become rampaging pests when they invade a new area. A new study shows that for a wide group of marine pests, invasion is coupled with a marked increase in body size. Edwin (Ted) Grosholz, a cooperative extension specialist in environmental science and policy at UC Davis, and Gregory M. Ruiz of the Smithsonian Environmental Research Center in Edgewater, Md., compared body sizes of 19 species of marine and estuarine invaders including crabs, shellfish and starfish in their native habitat and in other parts of the world where they have become invasive pests.

Related Articles


Twelve of the 19 showed increases in maximum size of up to 40 percent. European green crabs and Chinese mitten crabs, both prominent nuisance species in U.S. waters, were about 20 percent bigger than in their native habitat. Only one, the gem clam, showed any sign of a decrease.

The increases in body size were not clearly linked to differences in latitude between the native range and invaded areas or to the length of time since invasion. The changes could be because the animals are no longer held back by predators or parasites, Grosholz said.

The findings, which are published in the journal Ecology Letters, could have implications for understanding both how modern-day nuisance species become successful, and for interpreting fossil evidence of changes in populations of marine animals over millions of years.


Story Source:

The above story is based on materials provided by University Of California - Davis. Note: Materials may be edited for content and length.


Cite This Page:

University Of California - Davis. "Invasive Marine Animals Get Bigger." ScienceDaily. ScienceDaily, 29 July 2003. <www.sciencedaily.com/releases/2003/07/030729080316.htm>.
University Of California - Davis. (2003, July 29). Invasive Marine Animals Get Bigger. ScienceDaily. Retrieved April 1, 2015 from www.sciencedaily.com/releases/2003/07/030729080316.htm
University Of California - Davis. "Invasive Marine Animals Get Bigger." ScienceDaily. www.sciencedaily.com/releases/2003/07/030729080316.htm (accessed April 1, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, April 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Lion Makes Surprise Comeback in Gabon

Lion Makes Surprise Comeback in Gabon

AFP (Apr. 1, 2015) The noble lion has made a comeback in southeast Gabon, after disappearing for years, according to US wildlife organisation Panthera, which recently took live video footage of a male. Duration: 00:32 Video provided by AFP
Powered by NewsLook.com
Liberia Sees Resurgence of Drug Trafficking as Ebola Wanes

Liberia Sees Resurgence of Drug Trafficking as Ebola Wanes

AFP (Apr. 1, 2015) The governments of Liberia and Sierra Leone have been busy fighting the menace created by the deadly Ebola virus, but illicit drug lords have taken advantage of the situation to advance the drug trade. Duration: 01:12 Video provided by AFP
Powered by NewsLook.com
Tracking This Warbler's 'Extraordinary' Transoceanic Flight

Tracking This Warbler's 'Extraordinary' Transoceanic Flight

Newsy (Apr. 1, 2015) The blackpoll warbler makes one of the longest nonstop flights in the animal kingdom: three days straight for some 1,500 miles. Video provided by Newsy
Powered by NewsLook.com
Gorilla Falls Into Zoo Moat

Gorilla Falls Into Zoo Moat

Reuters - Light News Video Online (Mar. 31, 2015) A gorilla comes to the rescue of her sister who fell into a moat in Israel&apos;s Safari zoo. Rough cut (no reporter narration). Video provided by Reuters
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