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Sphaeromatidae
Sphaeromatidae is a family of isopods, often encountered on rocky shores and in shelf waters in temperate zones. The family includes almost 100 genera and 619 known marine species (and about 65 in fresh water). Within these genera, there are groups that share distinctive morphologies; further research may reclassify these genus-groups as separate families. Description Many species have a dorsoventrally compressed body shape, often with a vaulted dorsum, and some are strongly flattened (scale-like). Ecology Sphaeromatidae are browsers or detritus feeders. Xynosphaera appear to have incisory mandibles; ''Xynosphaera colemani'' burrows into the tissue of alcyonacean corals. Some genera of Sphaeromatidae associate with sponges, particularly Oxinasphaera. Genera The family contains the following genera: *'' Afrocerceis'' Müller, 1995 *'' Agostodina'' Bruce, 1994 *'' Amphoroidea'' H. Milne-Edwards, 1840 *'' Amphoroidella'' Baker, 1908 *'' Apemosphaera'' Bruce, 1994 *†'' Archaeo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caecosphaeroma
''Caecosphaeroma'' is a troglodytic isopod genus in the family Sphaeromatidae found in caves of NE and SW France. The genus was split off from Monolistra by Adrien Dollfus in 1896; in both genera, the female carries about 10 fertilized eggs in its external marsupium (brood pouch); they are white in ''Monolistra'' but bluish-green in ''Caecosphaeroma''. ''C. burgundum'' is the most studied species. Description They measure from 2–20 mm long. As cave dwellers, they have lost their vision, but remain sensitive to light, which they shun. They are capable of volvation (rolling themselves into a ball) to protect themselves, rest, or sleep. During copulation the male and female embrace takes the form of two concentric spheres. Development Larva remain in the marsupium about 12 months, and the animals continue growing for several years, reaching a final length of 10–20 mm. Evolution The marine ancestors of ''Caecosphaeroma'' are believed to have migrated up the cour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaeroma
''Sphaeroma'' is a genus of aquatic isopod crustaceans, part of the family Sphaeromatidae. Species The genus contains the following species: * '' Sphaeroma annandalei'' * '' Sphaeroma bigranulatum'' * '' Sphaeroma boryi'' * '' Sphaeroma conglobator'' * '' Sphaeroma curtum'' * '' Sphaeroma dumerilii'' * '' Sphaeroma emarginatum'' * '' Sphaeroma exosphaeroma'' * '' Sphaeroma felix'' * '' Sphaeroma gasparellai'' * '' Sphaeroma gayi'' * ''Sphaeroma globicauda'' * '' Sphaeroma granti'' * '' Sphaeroma intermedium'' * '' Sphaeroma laevigatum'' * ''Sphaeroma laurensi'' * ''Sphaeroma mukaii'' * ''Sphaeroma papillae'' * ''Sphaeroma pentodon'' * ''Sphaeroma peruvianum'' * ''Sphaeroma plumosa'' * ''Sphaeroma podicipitis'' * ''Sphaeroma prideauxianum'' * ''Sphaeroma propinqua'' * ''Sphaeroma quadridentatum'' * '' Sphaeroma quoianum'' * '' Sphaeroma retrolaeve'' * '' Sphaeroma rotundicaudum'' * '' Sphaeroma serratum'' * '' Sphaeroma shimantoensis'' * '' Sphaeroma sieboldii'' * '' Sphaeroma si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lekanesphaera Rugicauda, France 1
''Lekanesphaera'' is a genus of isopods in the family Sphaeromatidae. It was split off from ''Sphaeroma'' by Karl Wilhelm Verhoeff, 1943.: The type species is ''L. monodi'' (formerly ''Sphaeroma monodi'' Arcangeli, 1934). Other well-studied species are ''L. glabella'' (Madera), ''L. rugicauda'' (Baltic), and ''L. hookeri'' (from Scotland and southeast Sweden to Italian lagoons). Because they inhabit intertidal zones such as estuaries, their adaptation to diurnal variations in factors such as salinity are often studied. Cladogram Lekanesphaera cladogram from the Catalogue of Life The Catalogue of Life (CoL) is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxono ... ''Lekanesphaera rugicauda'' ''Lekanesphaera rugicauda'', also called a "sea slater," is found in estuaries ranging from the Baltic, down to the Netherla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphoroidea
''Amphoroidea'' is a genus of isopod of the family Sphaeromatidae Sphaeromatidae is a family of isopods, often encountered on rocky shores and in shelf waters in temperate zones. The family includes almost 100 genera and 619 known marine species (and about 65 in fresh water). Within these genera, there are gro ..., containing the following species: * '' Amphoroidea angustata'' Baker, 1908 * '' Amphoroidea australiensis'' Dana, 1853 * '' Amphoroidea elegans'' Baker, 1911 * '' Amphoroidea falcifer'' G. Thomson, 1879 * '' Amphoroidea longipes'' Hurley & Jansen, 1977 * '' Amphoroidea media'' Hurley & Jansen, 1971 * '' Amphoroidea typa'' H. Milne-Edwards, 1840 References Sphaeromatidae Isopod genera Taxa named by Henri Milne-Edwards {{isopod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnorimosphaeroma Oregonense
''Gnorimosphaeroma oregonense'', the Oregon pill bug, is a small intertidal isopod crustacean. It is an oval-shaped organism roughly 6 mm in length, and about twice as long as it is wide. The primary habitat of ''G. oregonense'' is the mid-Californian to Alaskan coast, where it inhabits tidal pool A tide pool or rock pool is a shallow pool of seawater that forms on the rocky intertidal shore. These pools typically range from a few inches to a few feet deep and a few feet across. Many of these pools exist as separate bodies of water only ...s and the intertidal region up to depths of . References Sphaeromatidae Crustaceans of the eastern Pacific Ocean Crustaceans described in 1853 {{isopod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isopod
Isopoda is an Order (biology), order of crustaceans. Members of this group are called isopods and include both Aquatic animal, aquatic species and Terrestrial animal, terrestrial species such as woodlice. All have rigid, segmented exoskeletons, two pairs of Antenna (biology), antennae, seven pairs of jointed limbs on the Thorax#In_arthropods, thorax, and five pairs of branching appendages on the Abdomen#In other animals, abdomen that are used in Respiration (physiology), respiration. Females brood their young in a pouch under their thorax called the Brood pouch (Peracarida), marsupium. Isopods have various feeding methods: some eat dead or decaying plant and animal matter, others are Grazing (behaviour), grazers or filter feeders, a few are Predation, predators, and some are internal or external parasites, mostly of fish. Aquatic species mostly live on the seabed or the bottom of freshwater body of water, bodies of water, but some Taxon, taxa can swim for short distance. Terre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adrien Dollfus
Adrien Frédéric Jules Dollfus (21 March 1858, in Mulhouse-Dornach – 19 November 1921, in Paris) was a French carcinologist known for his work with terrestrial isopods, including crustaceans and trilobites. Life and career Adrien Dollfus was the grandson of Alsatian factory owner Jean Dollfus. He was born in Dornach, Alsace, now part of the city of Mulhouse, Haut-Rhin. He completed a Bachelor of Science degree and then began a lifelong study of crustaceans and trilobites. In 1870 he founded the publication ''La Feuille des jeunes naturalistes''. In 1888 he married Anna Noémie Schlumberger in Paris, with whom he had three children. In 1912 Dollfus was chosen president of the '' Société zoologique de France''. Some species with the epithet of ''dollfusi'' are named in his honor, and others commemorate his relatives geologist Gustave Frédéric Dollfus (1850-1931) or parasitologist Robert-Philippe Dollfus (1887-1976). Around 1900, Swiss author, editor, correspondent and lib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
