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European green crab, Carcinus maenas

European green crab, Carcinus maenas, Crabe vert

European green crab
Carcinus maenas
Crabe vert

Kingdom : Animalia
Subkingdom : Bilateria
Phylum : Arthropoda
Subphylum : Crustacea
Class : Malacostraca
Subclass : Eumalacostraca
Superorder : Eucarida
Order : Decapoda
Suborder : Pleocyemata
Infraorder : Brachyura
Superfamily : Portunoidea
Family : Portunidae
Genera : Carcinus
Species : Carcinus maenas
Last verified with ITIS : 4-08-2015

Alien invasive species :

Warning!

It is very important to learn to recognize alien invasive species and to signal them when you see them. These species can cause serious problems in ecosystems in which they are introduced. In some cases, early detection of these species can help prevent an infestation. Every precaution should be taken to avoid spreading these species!



Alien invasive species list

Description :

Description :Shell slightly wider than long (up to 85 mm in length and 65 mm wide) in a trapezoid shapeDorsal (top shell) dark green to brown, mottled with yellowVentral (underside shell) variable in color, yellowish-green to red-orangeClaws are different in sizesDistinguishing Characteristics :Rows of 5 points, just like teeth at the margin of the carapace on either side of the eyes and three smaller peaks between the two eyesFour pairs of walking legs tipped slightly flattened and pointedSmaller and more aggressive than the native rock crab

Lookalike species European green crab :

Habitat :

Varied, especially in shallow water, intertidal zone up to ten meters, particularly in bays and estuariesEspecially in rocky environments (eastern North America) but also on rocks, sand, mud, algae or in marshes.Tolerate large variations in salinity (4-54) and temperatures (0-33 ° C)Sometimes even observed in some rivers well upstream from their mouths

Distribution :

Originally from the coastal waters of northern Europe

It is present today in the Gulf of St. Lawrence to Delaware and appeared on the east coast of the United States in the early 19th century. It has gradually dispersed from Maryland to northeastern Maine, and reached the south-western New Brunswick in the 1950s. It would have been reported for the first time in Nova Scotia in 1961. It has since then been reported in the southern Gulf in the early 1990s, observed in the Bay St. George (NS) in 1995 in PEI Prince Edward Islands in 1997 and in Magdalen Islands in 2004. It has also invaded the West Coast and has been observed in British Columbia, on Vancouver Island in 1998 and 1999.

Your observations :

There are 21 observations for European green crab. Add an observation

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To watch a species, you must be a member of the Aquatic Biodiversity Monitoring Network (ABMN).

Watching a species consists of adding it to a list that will send you an email message every time a new observation is added. If you no longer wish to receive these messages, you may easily remove the species from your list at any time. You just have to visit the description file of the species or change your parameters on "Watched Species" on your personal page.

This species is currently watched by blaise, Francois, isabelleb, Luc, martinet, naturalista, san, sicrabs and visionh2o.


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