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Sacculinidae
The Sacculinidae are a family of barnacles belonging to the bizarre parasitic and highly apomorphic infraclass In biological classification, class ( la, classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It is a group of related taxonomic orders. Other well-known ranks in descending order of size are life, domain, kingdom ... Rhizocephala. The Sacculinidae is one of the two larger families of Rhizocephala, containing six genera: * '' Drepanorchis'' Boschma, 1927 * '' Heterosaccus'' Smith, 1906 * '' Loxothylacus'' Boschma, 1928 * '' Ptychascus'' Boschma, 1933 * '' Sacculina'' Thompson, 1836 * '' Sesarmaxenos'' Annandale, 1911 References External links * * Barnacles Taxa named by Wilhelm Lilljeborg Crustacean genera {{maxillopoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterosaccus
''Heterosaccus'' is a genus of barnacles in infraclass Rhizocephala. Like other taxa in this group, they parasitize crabs. Geoffroy Smith circumscribed the genus in 1906; he initially only included ''H. hians''. Smith circumscribed a genus distinct from '' Sacculina'' due to a difference of the mesentery; in ''Heterosaccus'', the mesentery does not stretch down to the mantle opening but rather only is present on the ring of attachment. Species , WoRMS Worms may refer to: *Worm, an invertebrate animal with a tube-like body and no limbs Places *Worms, Germany, a city **Worms (electoral district) *Worms, Nebraska, U.S. *Worms im Veltlintal, the German name for Bormio, Italy Arts and entertainme ... recognizes the following fifteen species. References Further reading * * Barnacles Parasitic crustaceans Parasites of crustaceans Crustacean genera {{maxillopoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizocephala
Rhizocephala are derived barnacles that parasitise mostly decapod crustaceans, but can also infest Peracarida, mantis shrimps and thoracican barnacles, and are found from the deep ocean to freshwater. Together with their sister groups Thoracica and Acrothoracica, they make up the subclass Cirripedia. Their body plan is uniquely reduced in an extreme adaptation to their parasitic lifestyle, and makes their relationship to other barnacles unrecognisable in the adult form. The name Rhizocephala derives from the Ancient Greek roots (, "root") and (, "head"), describing the adult female, which mostly consists of a network of thread-like extensions penetrating the body of the host. Description and lifecycle As adults they lack appendages, segmentation, and all internal organs except gonads, a few muscles, and the remains of the nervous system. Females also have a cuticle, which is never shed. Other than the minute larval stages, there is nothing identifying them as crustaceans or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 and piers; they are recognised as barnacles because their larval forms are like other members of the barnacle class Cirripedia. The prevalence of this crustacean parasite in its crab host can be as high as 50%. Habitat ''Sacculina'' live in a marine environment. During their larval stage they are pelagic, but as they form into adults they live as ectoparasites on crabs. Their primary host is the green crab, which is native to the Eastern Atlantic Ocean. Though these crabs have spread to other bodies of waters, it is not believed that ''Sacculina'' barnacles have traveled with them to these new localities. Anatomy The body of the adult parasite can be divided into two parts: one part is called the "externa" where the bulbous reproductive organ of the parasite sticks out of the abdomen of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxothylacus
''Loxothylacus'' is a genus of parasitic barnacles in the family Sacculinidae The Sacculinidae are a family of barnacles belonging to the bizarre parasitic and highly apomorphic infraclass In biological classification, class ( la, classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It i .... There are more than 20 described species in ''Loxothylacus''. Species These species belong to the genus ''Loxothylacus'': * '' Loxothylacus amoenus'' Boschma, 1940 * '' Loxothylacus aristatus'' Boschma, 1931 * '' Loxothylacus armatus'' Boschma, 1949 * '' Loxothylacus auritus'' Boschma, 1954 * '' Loxothylacus bicorniger'' Boschma, 1933 * '' Loxothylacus brachythrix'' Boschma, 1940 * '' Loxothylacus caribaeus'' Boschma, 1974 * '' Loxothylacus carinatus'' (Kossmann, 1872) * '' Loxothylacus corculum'' (Kossmann, 1872) * '' Loxothylacus desmothrix'' Boschma, 1931 * '' Loxothylacus echioides'' Boschma, 1940 * '' Loxothylacus engeli'' Boschma, 1968 * '' Loxoth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
