What is the taxonomy of a crab?
crab, any short-tailed member of the crustacean order Decapoda (phylum Arthropoda)—especially the brachyurans (infraorder Brachyura), or true crabs, but also other forms such as the anomurans (suborder Anomura), which include the hermit crabs.
How do you identify Carcinus maenas?
Carcinus maenas can be distinguished from all other shallow water crabs on the Pacific Coast by its general hexagonal or fan shape, and the five prominent teeth on the edge of the shell behind each eye.
What is the common name for Carcinus maenas?
green shore crab
Carcinus maenas is a common littoral crab. It is known by different names around the world. In the British Isles, it is generally referred to as the shore crab, or green shore crab. In North America and South Africa, it bears the name green crab or European green crab.
What is the scientific name of green crab?
Carcinus maenasEuropean green crab / Scientific name
The green crab, Carcinus maenas, is a widely distributed invasive species that eventually alters its new environment.
What is the taxonomy of a blue crab?
Data Quality Indicators:
| Infraorder | Brachyura Latreille, 1802 – short-tailed crabs, true crabs |
| Superfamily | Portunoidea Rafinesque, 1815 |
| Family | Portunidae Rafinesque, 1815 – swimming crabs |
| Genus | Callinectes Stimpson, 1860 |
| Species | Callinectes sapidus M. J. Rathbun, 1896 – blue crab, bluepoint |
What order is a crab in?
DecapodsTrue crabs / Order
What do Carcinus maenas eat?
It has no predators or competitors and also a killer appetite—crab, fish, young lobster, and shellfish are no match for its nimble, yet crushing claws. Digging up and eating as many as 40 small clams a day isn’t out of the norm for one individual crab.
How can you tell a European green crab?
Rather than color, the most identifiable characteristic of European green crabs is the set of five triangular teeth, or spines, evenly spaced on each side of the carapace margin, located between the eyes and the widest part of the shell. Also useful are the three rounded lobes (bumps) between the eyes.
Where did Carcinus maenas originate?
The European green crab (Carcinus maenas) is a small shore crab whose native distribution is in the northeast Atlantic Ocean and Baltic Sea, ranging along coasts from northern Africa to Norway and Iceland.
What problem has the green crab caused in Maine?
Green crabs consume nearly everything in their path, causing the loss of soft shell clam populations — and clam digging jobs — herbivore snails, and eel grass; and degrading salt marshes.
What was the European green crab invasion?
Green crabs were first introduced to North America in the 1800s, likely hitching a ride in the ballast water of merchant ships from Europe. Experts believe the invasive crab was transported to the West Coast in ballast water as well.
Is blue crab a true crab?
Callinectes sapidus (from the Ancient Greek κάλλος,”beautiful” + nectes, “swimmer”, and Latin sapidus, “savory”), the blue crab, Atlantic blue crab, or regionally as the Chesapeake blue crab, is a species of crab native to the waters of the western Atlantic Ocean and the Gulf of Mexico, and introduced internationally.
Is Carcinus maenas native to South Australia?
A range extension for the European shore crab Carcinus maenas (Linn., 1758) in South Australia. South Australian Naturalist, 59:18. Ruiz GM; Carlton JT, 2003. Invasive species: vectors and management strategies [ed. by Ruiz GM, Carlton JT].
What is Carcinus maenas (Linn 1758)?
A range extension for the European shore crab Carcinus maenas (Linn., 1758) in South Australia. South Australian Naturalist, 59:18. Ruiz GM; Carlton JT, 2003.
Is there a European green crab (Carcinus maenas) in Canada?
Risk Assessment for European green crab (Carcinus maenas) in Canadian Waters. Tirmizi NM; Ghani N, 1983. Carcinus maenas (Linnaeus, 1758), a portunid crab new to Pakistan (northern Arabian Sea).
Is Carcinus maenas a hyperglycemic factor?
A CHH regulating hemolymph glucose levels as a hyperglycemic factor was first isolated and sequenced from the shore crab Carcinus maenas in 1989 [1]. Subsequently, a MIH and a VIH were isolated and characterized from C. maenas [2] and from the American lobster Homarus americanus [3], respectively.