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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 European green crab. C. maenas is a widespread invasive species, listed among the 100 of the World's Worst Invasive Alien Species. [2]
Carcinus aestuarii, also known as the Mediterranean green crab is a littoral crab, native to the Mediterranean Sea.. Carcinus aestuarii bears some similarities to Carcinus maenas and was sometimes considered to be a subspecies thereof, rather than a species in its own right, but a molecular biological study using the COI gene found the difference between the two taxa to be substantial ...
Carcinus maenas. C. maenas is among the 100 "world's worst alien invasive species".It is native to the northeast Atlantic Ocean and Baltic Sea, but has colonised similar habitats in Australia, South Africa, South America, and both Atlantic and Pacific Coasts of North America.
Mithraculus sculptus, the green clinging crab [3] or emerald crab, is a species of crab in the family Majidae. It is a dark green colour and is found in tropical waters in the Caribbean Sea . It is sometimes kept in reef aquaria.
Several species of wild crab are the subject of crab fisheries around the coasts of the British Isles. The most important are the brown crab or edible crab, Cancer pagurus (29,193 t), various swimming crabs (3,180 t), the spider crab Maja brachydactyla (1,565 t), the shore crab or green crab Carcinus maenas (553 t) and the velvet crab Necora puber (193 t).
The meat of Atergatis floridus, like that of many related crab species from the family Xanthidae is toxic.The toxins are synthesised by bacteria of the genus Vibrio which live in symbiosis with the crab and the poisons are one similar to those found in puffer fish, i.e. tetrodotoxin, and also saxitoxin which is the primary toxin involved in paralytic shellfish poisoning.
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Gecarcinus ruricola A male G. ruricola. Four colour morphs exist within the species - black, red, yellow, and green. [6] The carapace of G. ruricola grows in width at a rate of about 1 in (25 mm) per year, with the crabs reaching maturity after 5 years, and living for up to 10 years in total. [6]