Invasive marine animals get bigger

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.


Contact: Andy Fell
University of California - Davis

Page: 1

Related biology news :

1. Invasive species: A few bucks and a click away
2. Invasive plant outcompeted by its native ancestors
3. Invasive aliens
4. Nonnative Invasive Plants of Southern Forests
5. Invasive species summit aims to halt Great Lakes-Mississippi River species exchange
6. Special section: Invasive species
7. Invasive species: Those who live together invade better
8. Invasive gobies prevent sculpin spawning, impacting perch food chain
9. Invasive cordgrass in San Francisco Bay
10. Invasive fishes pose increasing threat to U.S. waters and native fishes, says USGS
11. USGS Scientists To Speak On Rare Plants And Invasive Species At Santa Barbara Symposium

Post Your Comments:

(Date:10/26/2019)... ... October 23, 2019 , ... ... Hughes , to its executive leadership team. , As a market leader in ... growth-stage biotech and pharma companies to reduce timelines and improve quality with real-time ...
(Date:10/26/2019)... ... October 25, 2019 , ... ... helium-based leak testing instruments for the Pharmaceutical, Biotechnology, Medical Device and Food Packaging ... helium leak detection system, the SIMS Model 1915+ . The SIMS 1915+ ...
(Date:10/22/2019)... ... ... Greenberg Traurig, LLP’s global Life Sciences & Medical Technology Group ... with German biotech strategy consulting firm, Catenion. The seminar will take place from 16:00 ... , Speakers from Greenberg Traurig and Catenion will discuss best practices and practical tips ...
Breaking Biology News(10 mins):
(Date:11/12/2019)... Va. (PRWEB) , ... November 12, 2019 , ... ... forensic DNA services, welcomed their new Director of Forensic Genealogy, Melinde Lutz Byrne, ... Genealogy Service (FGS) to ultimately provide investigative leads to law enforcement through ...
(Date:11/6/2019)... ... November 06, 2019 , ... LeadingBiotech ,?an exclusive event ... its East/West CEO conference to be held January 11-12, 2020 at ... off the week of the J.P. Morgan Healthcare Conference and other biotech industry ...
(Date:11/2/2019)... ... October 31, 2019 , ... A clinical trial usually ... other: study managers, principal investigators, supply chain managers, manufacturers, IRT, CRAs and so ... of the latest data, potentially leading to patient risk. , By having a ...
(Date:10/30/2019)... , ... October 30, 2019 , ... ... to showcase the many roles innovation and technology play in educating the next ... Innovation, featured hands-on learning opportunities and presentations by WesternU administrators and representatives of ...
Breaking Biology Technology:
Cached News: