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Far East / North Pacific
Designed and composed by Alex Alyakrinsky, 2011
“Until now this species was known as Carcinus mediterraneus Czerniavsky, 1884. Nardo's
(1847b) account, however, based on material from the lagoon at Venice, clearly provides the
oldest available name for the Mediterranean species of Carcinus.” [Manning & Holthuis, 1981:
“Similar Species. Carcinus maenas is very similar to its close relative, Carcinus aestuarii. The
most consistent apparent difference is the shape of the male pleopods, which are paired
appendages found under the male's abdominal flap. In Carcinus maenas the two pleopods
curve outward, touching each other in the central part of the curve; in Carcinus aestuarii the
pleopods are straight and parallel and do not touch. In addition, Carcinus maenas is slightly
wider in shape than Carcinus aestuarii, and the front part of the carapace between the eye
sockets protrudes forward more in Carcinus aestuarii (for a more complete discussion, see
Yamada & Hauck 2001). [Cohen, Andrew N. 2005 Guide to the Exotic Species of San
Francisco Bay. San Francisco Estuary Institute, Oakland, CA, www.exoticsguide.org].
Carcinus aestuarii Nardo, 1847 = Carcinus mediterraneus Czerniavsky, 1884 Black Sea
Range. “Carcinus aestuarii (= C. mediterraneus) is native to the Mediterranean, Black and
Asov Seas, and has become established in Tokyo, Sagami, Osaka and Dokai Bays in Japan.”
[Gillespie, G.E. & Phillips, A.C. & Paltzat, D.L. & Therriault, T.W. 2007, p. 1].
“Mediterranean, also in Canary Islands, possibly in Atlantic adjacent to Mediterranean and
possibly in portions of the Suez Canal; intertidal (Zariquiey Alvarez,1968).” [Manning &
Holthuis, 1981: 74].
In the Black Sea - one of the most common species of crabs. It can be found in lagoons, bays,
coastal solt lakes, among Zostera, up to a depth of 70 m. Usually among stones, less often on
sand and gravel. [Kobjakova & Dolgopolskaya, 1969, p. 292].
Size of carapace. Up to 63 x 80 mm. [Kobjakova & Dolgopolskaya, 1969, p. 292].
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