Featured Research

from universities, journals, and other organizations

Furry-clawed Asian Crabs Found In Delaware And Chesapeake Bays

Date:
June 6, 2007
Source:
Smithsonian
Summary:
Chinese mitten crabs, first reported in the Chesapeake Bay, are more widespread than initially thought. Four crabs have now been caught in Delaware Bay during the last week of May 2007, and may occur in other waters of the US east coast.

The "furry-looking" claws distinguish the Chinese mitten crab from native crabs. This Chinese mitten crab was caught by a waterman fishing for Blue crabs in the Upper Chesapeake Bay on May 18.
Credit: Greg Ruiz, Smithsonian

Chinese mitten crabs, first reported in the Chesapeake Bay, are more widespread than initially thought. Four crabs have now been caught in Delaware Bay during the last week of May 2007, and may occur in other waters of the U.S. east coast.

In total, seven adult male mitten crabs have been documented from the two bays since 2005. Prior to this, the potentially invasive species had never been recorded from coastal waters of the eastern United States.

The mitten crab is native to eastern Asia and has already invaded Europe and the western United States, where it has established reproductive populations. The crab occurs in both freshwater and saltwater. Young crabs spend their lives in freshwater and migrate to saltwater estuaries for reproduction.

Named for the unusual thick fur-like coating on its claws, the mitten crab looks very different than native crabs and is easily recognized. It is listed as injurious wildlife under the Federal Lacey Act, due to its potential to cause ecological and economic damage.

"We don't know the present status of this crab along the eastern U.S. coast" said Gregory Ruiz, senior scientist at the Smithsonian Environmental Research Center. "At the moment, it is not clear whether these crabs are reproducing or established in the Mid-Atlantic region, or whether the captured crabs are just a few individuals that originated elsewhere." These crabs may have arrived in the ballast water of ships or through live trade.

A Mitten Crab Network has been established to examine the abundance, distribution, and reproductive status of crabs in Chesapeake Bay, Delaware Bay and other estuaries along the eastern United States. The initial partnership between the Smithsonian lab, Maryland Department of Natural Resources, U.S. Fish and Wildlife Service, National Oceanic and Atmospheric Administration and Delaware Division of Fish and Wildlife, is now being expanded to include resource managers, commercial fishermen, research organizations and citizens along the east coast.


Story Source:

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


Cite This Page:

Smithsonian. "Furry-clawed Asian Crabs Found In Delaware And Chesapeake Bays." ScienceDaily. ScienceDaily, 6 June 2007. <www.sciencedaily.com/releases/2007/06/070604123727.htm>.
Smithsonian. (2007, June 6). Furry-clawed Asian Crabs Found In Delaware And Chesapeake Bays. ScienceDaily. Retrieved September 14, 2014 from www.sciencedaily.com/releases/2007/06/070604123727.htm
Smithsonian. "Furry-clawed Asian Crabs Found In Delaware And Chesapeake Bays." ScienceDaily. www.sciencedaily.com/releases/2007/06/070604123727.htm (accessed September 14, 2014).

Share This



More Plants & Animals News

Sunday, September 14, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Conservationists Face Uphill PR Battle With New Shark Rules

Conservationists Face Uphill PR Battle With New Shark Rules

Newsy (Sep. 14, 2014) — New conservation measures for shark fishing face an uphill PR battle in the fight to slow shark extinction. Video provided by Newsy
Powered by NewsLook.com
Shocker: Journalists Are Utterly Addicted To Coffee

Shocker: Journalists Are Utterly Addicted To Coffee

Newsy (Sep. 13, 2014) — A U.K. survey found that journalists consumed the most amount of coffee, but that's only the tip of the coffee-related statistics iceberg. Video provided by Newsy
Powered by NewsLook.com
'Magic Mushrooms' Could Help Smokers Quit

'Magic Mushrooms' Could Help Smokers Quit

Newsy (Sep. 11, 2014) — In a small study, researchers found that the majority of long-time smokers quit after taking psilocybin pills and undergoing therapy sessions. Video provided by Newsy
Powered by NewsLook.com
Spinosaurus Could Be First Semi-Aquatic Dinosaur

Spinosaurus Could Be First Semi-Aquatic Dinosaur

Newsy (Sep. 11, 2014) — New research has shown that the Spinosaurus, the largest carnivorous dinosaur, might have been just as well suited for life in the water as on land. 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