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Thoracica
Thoracica is an infraclass of crustaceans which contains the most familiar species of barnacles found on rocky coasts, such as '' Semibalanus balanoides'' and ''Chthamalus stellatus''. They have six well-developed limbs, and may be either stalked or sessile. The carapace is heavily calcified. The group includes free-living and commensal species. Classification This article follows Chan et al. (2021) and WoRMS in placing Thoracica as an infraclass of Thecostraca and in the following classification of thoracicans down to the level of family: : Infraclass Thoracica Darwin, 1854 :: Superorder Phosphatothoracica Gale, 2019 ::: Order Iblomorpha Buckeridge & Newman, 2006 :::: Family Iblidae Leach, 1825 :::: Family Idioiblidae Buckeridge & Newman, 2006 ::: Order † Eolepadomorpha Chan et al., 2021 :::: Family † Eolepadidae Buckeridge, 1983 :::: Family † Praelepadidae Chernyshev, 1930 :: Superorder Thoracicalcarea Gale, 2015 ::: Order Balanomorpha Pilsbry, 1916 :::: Superfamily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barnacle
A barnacle is a type of arthropod constituting the subclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile (nonmobile) and most are suspension feeders, but those in infraclass Rhizocephala are highly specialized parasites on crustaceans. They have four nektonic (active swimming) larval stages. Around 1,000 barnacle species are currently known. The name is Latin, meaning "curl-footed". The study of barnacles is called cirripedology. Description Barnacles are encrusters, attaching themselves temporarily to a hard substrate or a symbiont such as a whale (whale barnacles), a sea snake (''Platylepas ophiophila''), or another crustacean, like a crab or a lobster (Rhizocephala). The most common among them, "acorn barnacles" (Sessilia), are sessile where they grow their shells directly onto the substrate. Pedunculat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thecostraca
Thecostraca is a Class (biology), class of marine invertebrates containing over 2,200 described species. Many species have planktonic larvae which become Sessility (zoology), sessile or parasite, parasitic as adults. The most important subgroup are the barnacles (subclass Cirripedia), constituting a little over 2,100 known species. The subgroup Facetotecta contains a single genus, ''Hansenocaris'', known only from the tiny planktonic Nauplius (larva), nauplii called "y-larvae". These larvae have no known adult form, though it is suspected that they are parasites, and their affinity is uncertain. Some researchers believe that they may be larval tantulocaridans. No larval tantulocaridans are currently known. The group Ascothoracida contains about 110 species, all parasites of coelenterates and echinoderms. Classification This article follows Chan et al. (2021) and the World Register of Marine Species in placing Thecostraca as a class of Crustacea and in the following classificati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catophragmidae
The Catophragmidae are a family of barnacles in the superfamily Chthamaloidea with eight shell wall plates (rostrum, carina, paired rostrolatera, carinolatera I and carinolatera II), surrounded by several whorls of imbricating plates. The basis is membranous. This family occupies lower to upper midlittoral warm seas of the Pacific Coast of Central America, Caribbean, Bermuda, and Australia/Tasmania. These populations are highly disjunct and can be seen as relictual. The family contains these genera: All genera are at present monotypic. *''Catolasmus'' Ross & Newman, 2001 *''Catomerus'' Pilsbry, 1916 *''Catophragmus ''Catophragmus'' is the originally named genus of the family Catophragmidae. At present, it is monotypical. It is a shallow water acorn barnacle of the Tropical Western Atlantic and Caribbean characterized by small accessory imbricating plates ...'' Sowerby, 1827 The Catophragmidae have historically suffered from a lack of systematic attention. Ross and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chthamalidae
The Chthamalidae are a family of chthamaloid barnacles, living entirely in intertidal/subtidal habitats, characterized by a primary shell wall of eight, six, or four plates, lacking imbricating plate whorls, and either membraneous or more rarely calcareous basis. They are not found below immediate subtidal habitats, and more likely are found in the highest tier of shallow-water barnacle fauna. They can be found in the most rigorous wave-washed locations, and some species are found in the surf zone above high tide mark, only receiving water from wave action at high tide. Definition and Discussion The shell wall consists of eight wall plates, which reduce to six, and four in some species. Plate reduction is accomplished by fusion of rostrolatera with adjacent laterals, or initially by suppression of carinolatus II, reducing plate number from eight to six. Unlike the superfamilies Coronuloidea and Balanoidea, the rostrum rarely fuses with rostrolatus. In soft parts, caud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chthamaloidea
The Chthamaloidea are a subdivision of Balanomorpha proposed by Newman and Ross to include barnacles with shell wall composed of rostrum, carina, and one to three pairs of latera, rarely supplemented with one or more whorls of basal imbricating plates. The rostrolatus enters the sheath, but rarely fuses with the rostrum, as in the three higher superfamilies. Shell plates are simple in construction, solid, and incorporate organic chitin between carbonate layers. Opercular plates are deeply interlocked, and in some genera, may become concrescent with age. Soft part morphology includes concave labrum without notch in the central part. Cirrus III more resembles Cirrus IV than II, or may be intermediate in structure. Caudal appendages present in some species. Environmental preferences and distribution All living Chthamaloidea, and very sparsely known fossil occurrences inhabit surf zone/intertidal/subtidal littoral zone habitats. Geographically, chthamaloids may be found in all t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commensal
Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed. This is in contrast with mutualism, in which both organisms benefit from each other; amensalism, where one is harmed while the other is unaffected; parasitism, where one is harmed and the other benefits, and parasitoidism, which is similar to parasitism but the parasitoid has a free-living state and instead of just harming its host, it eventually ends up killing it. The commensal (the species that benefits from the association) may obtain nutrients, shelter, support, or locomotion from the host species, which is substantially unaffected. The commensal relation is often between a larger host and a smaller commensal; the host organism is unmodified, whereas the commensal species may show great structural adaptation consistent with its habits, as in the remoras that ride attached to sharks and other fishes. Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chionelasmatidae
Chionelasmatidae is a family of barnacles belonging to the order Balanomorpha. Genera: * ''Chionelasmus'' Pilsbry, 1911 * ''Eochionelasmus ''Eochionelasmus'' is a genus of symmetrical sessile barnacles in the family Chionelasmatidae Chionelasmatidae is a family of barnacles belonging to the order Balanomorpha The Balanomorpha are an order of barnacles, containing familiar aco ...'' Yamaguchi, 1990 References {{Taxonbar, from=Q15730354 Sessilia Crustacean families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrgomatidae
Pyrgomatidae is a family of barnacles A barnacle is a type of arthropod constituting the subclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in eros ... belonging to the order Balanomorpha. Genera The following genera are members of the family Pyrgomatidae: :Subfamily Ceratoconchinae Newman & Ross, 1976 :: Ceratoconcha Kramberger-Gorjanovic, 1889 :: † Eoceratoconcha Newman & Ladd, 1974 :Subfamily Megatrematinae Holthuis, 1982 :: Adna Sowerby, 1823 :: Megatrema Sowerby, 1823 :: Memagreta Ross & Pitombo, 2002 :: Pyrgomina Baluk & Radwanski, 1967 :Subfamily Pyrgomatinae Gray, 1825 :: Ahoekia Ross & Newman, 1995 :: Arossella Anderson, 1993 :: Australhoekia Ross & Newman, 2000 :: Cantellius Ross & Newman, 1973 :: Cionophorus Ross & Newman, 2001 :: Creusia Leach, 1817 :: Darwiniella Anderson, 1992 :: Eohoekia Ross & Newman, 1995 :: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balanidae
The Balanidae comprise a family of barnacles of the order Balanomorpha. As a result of research published in 2021 by Chan et al., the members of the family Archaeobalanidae were merged with this family. Genera These genera belong to the family Balanidae: * '' Acasta'' Leach, 1817 * '' Actinobalanus'' Moroni, 1967 * ''Amphibalanus'' Pitombo, 2004 * '' Archiacasta'' Kolbasov, 1993 * ''Armatobalanus'' Hoek, 1913 * ''Arossia'' Newman, 1982 * ''Austromegabalanus'' Newman, 1979 * ''Balanus'' Costa, 1778 (barnacle) * '' Bathybalanus'' Hoek, 1913 * '' Bryozobia'' Ross & Newman, 1996 * '' Chesaconcavus'' Zullo, 1992 * ''Chirona'' Gray, 1835 * ''Concavus'' Newman, 1982 * '' Conopea'' Say, 1822 * '' Eoatria'' Van Syoc & Newman, 2010 * '' Euacasta'' Kolbasov, 1993 * '' Fistulobalanus'' Zullo, 1984 * '' Fosterella'' Buckeridge, 1983 * '' Hesperibalanus'' Pilsbry, 1916 * '' Hexacreusia'' Zullo, 1961 * ''Megabalanus'' Hoek, 1913 * '' Membranobalanus'' Hoek, 1913 * ''Menesiniella'' Newman, 1982 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
