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Pinnotheridae
The Pinnotheridae are a family of tiny soft-bodied crabs that live commensally in the mantles of certain bivalve molluscs (and the occasional large gastropod mollusc species in genera such as ''Strombus'' and ''Haliotis''). '' Tunicotheres moseri'' is commensal with a tunicate. The earliest fossils attributable to the Pinnotheridae date from the Danian. Genera and species This is a comprehensive list of species in the family, as of 2008: ;''Abyssotheres'' ;'' Afropinnotheres'' ;'' Alarconia'' ;'' Alain'' *''Alain crosnieri'' *''Alain raymondi'' Ahyong & Ng, 2008 ;''Alainotheres'' ;'' Arcotheres'' *'' Arcotheres alcocki'' *'' Arcotheres arcophilus'' *'' Arcotheres coarctatus'' *'' Arcotheres exiguus'' *'' Arcotheres guinotae'' *'' Arcotheres latifrons'' *'' Arcotheres latus'' *'' Arcotheres modiolicola'' *'' Arcotheres nudifrons'' *'' Arcotheres palaensis'' *'' Arcotheres pernicola'' *'' Arcotheres placunae'' *'' Arcotheres rayi'' *'' Arcotheres rhombifer'' *'' Arcotheres rotunda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunicotheres Moseri
''Tunicotheres'' is a monotypic genus of crabs in the family Pinnotheridae, and ''Tunicotheres moseri'' is the only species in the genus. This crab lives commensally in the atrial chamber of a small ascidian (sea squirt). It is found in the tropical western Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico. Taxonomy In Mary J. Rathbun's original description of this species, she placed it in the then broadly defined '' Pinnotheres''. It remained there for most of the 20th century until Ernesto Campos, while revising the Pinnotheridae, noted that most species with a 2-segmented palp on the third maxilliped were anomalous in ''Pinnotheres''. This led to the segregation of multiple genera, of which ''Tunicotheres'', defined in 1996, was one. Description Members of this family are tiny, soft-bodied crabs commonly known as pea crabs. Males of this species have carapace widths of up to and females of up to . Ecology This crab has been found as an endosymbiont of several spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinnotheres Pisum
The pea crab, ''Pinnotheres pisum'', is a small crab in the family Pinnotheridae that lives as a parasite in oysters, clams, mussels, and other species of bivalves. Description Pea crabs are small crustaceans about the size of a pea or dime, with a "smooth dorsal surface of the carapace, or upper exoskeleton". The exoskeleton of males is hard and circular and has eyes and antennae extending from their fronts, and the chelipeds are more robust in males than in females, which have more elongated chelipeds. The bodies of the female pea crabs are often translucent and show the inner organs and gonads as yellow and red, with the males being a "more yellowish-grey with patches of brown". Ecology The relationship between the pea crab and its host is one of parasitism, rather than commensalism, since the host may be harmed by the crab's feeding activities. The pea crab relies solely on its host for food, safety, and oxygen. Pea crabs have a variety of hosts, the most important of whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alain (crab)
''Alain'' is a genus of crabs belonging to the family Pinnotheridae. The species of this genus are found in Northern Australia. Species: *''Alain crosnieri'' *''Alain raymondi Alain may refer to: People * Alain (given name), common given name, including list of persons and fictional characters with the name * Alain (surname) * "Alain", a pseudonym for cartoonist Daniel Brustlein * Alain, a standard author abbreviation u ...'' References {{Taxonbar, from=Q18596303 Pinnotheroidea Decapod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alain Raymondi
Alain may refer to: People * Alain (given name), common given name, including list of persons and fictional characters with the name * Alain (surname) * "Alain", a pseudonym for cartoonist Daniel Brustlein * Alain, a standard author abbreviation used to indicate Henri Alain Liogier, also known as Brother Alain, as the author when citing a botanical name * Émile Chartier (1868–1951), French philosopher and antimilitarist commonly known as Alain Places * Alain, Iran, a village in Tehran Province, Iran * Al Ain, a city in Abu Dhabi, United Arab Emirates ** Al Ain International Airport in the United Arab Emirates * Val-Alain, Quebec, village of 950 people in Quebec, Canada Other uses * 1969 Alain (1935 CG), a Main-belt Asteroid discovered in 1935 * ''Alain'' (crab), a genus of crabs in the family Pinnotheridae * Prix Alain-Grandbois or Alain Grandbois Prize is awarded each year to an author for a book of poetry * Rosa 'Alain', popular red floribunda rose variety See also * Allain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alain Crosnieri
Alain may refer to: People * Alain (given name), common given name, including list of persons and fictional characters with the name * Alain (surname) * "Alain", a pseudonym for cartoonist Daniel Brustlein * Alain, a standard author abbreviation used to indicate Henri Alain Liogier, also known as Brother Alain, as the author when citing a botanical name * Émile Chartier (1868–1951), French philosopher and antimilitarist commonly known as Alain Places * Alain, Iran, a village in Tehran Province, Iran * Al Ain, a city in Abu Dhabi, United Arab Emirates ** Al Ain International Airport in the United Arab Emirates * Val-Alain, Quebec, village of 950 people in Quebec, Canada Other uses * 1969 Alain (1935 CG), a Main-belt Asteroid discovered in 1935 * ''Alain'' (crab), a genus of crabs in the family Pinnotheridae * Prix Alain-Grandbois or Alain Grandbois Prize is awarded each year to an author for a book of poetry * Rosa 'Alain', popular red floribunda rose variety See also * Allain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crabs
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the world's oceans, in freshwater, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. They first appeared during the Jurassic Period. Description Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a pair of chelae (claws). Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to . Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation. Environment Crabs are found in all of the world's oceans, as well as in fresh w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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