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Sacculina carcini, the crab hacker barnacle, [2] is a species of parasitic barnacle in the family Sacculinidae, in particular a parasitic castrator, of crabs. The crab that most often is used as a host is the green crab , the natural range of which is the coasts of Europe and North Africa. [ 2 ]
Sacculina. Sacculina is a genus of barnacles that is a parasitic castrator of crabs.They belong to a group called Rhizocephala.The adults bear no resemblance to the barnacles that cover ships, whales, and piers; they are recognised as barnacles because their larval forms are like other members of the barnacle class Cirripedia.
Barnacle adults are sessile; most are suspension feeders with hard calcareous shells, but the Rhizocephala are specialized parasites of other crustaceans, with reduced bodies. Barnacles have existed since at least the mid-Carboniferous, some 325 million years ago. In folklore, barnacle geese were once held to emerge fully formed from goose ...
Austromegabalanus psittacus, the giant barnacle or picoroco as it is known in Spanish, is a species of large barnacle native to the coasts of southern Peru, all of Chile and southern Argentina. [ 2 ] [ 3 ] It inhabits the littoral and intertidal zones of rocky shores and normally grows up to 30 centimetres (12 in) tall with a mineralized shell ...
Capitulum is a monotypic genus of sessile marine stalked barnacles. Capitulum mitella is the only species in the genus. It is commonly known as the Japanese goose barnacle or kamenote and is found on rocky shores in the Indo-Pacific region.
L. panopaei manipulates the behaviour of both sexes of the crab on which it settles, so that the host treats the barnacle's brood sac as if it contained the crab's own eggs. In the case of male crabs, the parasite causes the ventral abdominal plate to widen, which makes it more suitable for brooding, and alters the crab's behaviour so that it ...
Cryptophialus minutus is a small (2 mm) cirripede that has no shell. It mechanically burrows into the shell of host organisms such as Concholepas peruviana. [2] Unlike many barnacle species, C. minutus is not hermaphroditic.
While many barnacles deal with competition for space by organisms such as limpets and mussels by growing many organisms close together in colonies, Megabalanus responds by rapidly growing to a very large size. [4] Their large size also helps reduce predation, although it makes them large enough to be harvested for human consumption.