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.

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 July 25, 2014 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 July 25, 2014).

Share This




More Plants & Animals News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Boy Attacked by Shark in Florida

Boy Attacked by Shark in Florida

Reuters - US Online Video (July 24, 2014) An 8-year-old boy is bitten in the leg by a shark while vacationing at a Florida beach. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Dogs Appear To Become Jealous Of Owners' Attention

Dogs Appear To Become Jealous Of Owners' Attention

Newsy (July 23, 2014) A U.C. San Diego researcher says jealousy isn't just a human trait, and dogs aren't the best at sharing the attention of humans with other dogs. Video provided by Newsy
Powered by NewsLook.com
Professor Creates Site Revealing Where People's Cats Live

Professor Creates Site Revealing Where People's Cats Live

Newsy (July 23, 2014) ​It's called I Know Where Your Cat Lives, and you can keep hitting the "Random Cat" button to find more real cats all over the world. 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