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Phoronis
''Phoronis'' is one of the two genera of the horseshoe worm family (Phoronidae), in the phylum Phoronida. The body has two sections, each with its own coelom. There is a specialist feeding structure, the lophophore, which is an extension of the wall of the coelom and is surrounded by tentacles. The gut is U-shaped. The diagnostic feature that distinguishes this genus is the lack of epidermal invagination at the base of the lophophore. These worms are filter feeders. They live on hard substrates or soft sediments in marine environments throughout the world. They have different modes of reproduction which help with their success. The scientific name of the larval form is '' Actinotrocha''. Etymology The generic name refers to Phoronis (better known as Io), a Greek mythological character sometimes conflated with Isis. Thomas Strethill Wright, of Edinburgh, did not give a specific reason for choosing the name. Species * '' Phoronis australis'' Haswell 1883 * '' Phoronis embryolab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronidae
Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies. They live in most of the oceans and seas, including the Arctic Ocean but excluding the Antarctic Ocean, and between the intertidal zone and about 400 meters down. Most adult phoronids are 2 cm long and about 1.5 mm wide, although the largest are 50 cm long. The name of the group comes from its type genus: ''Phoronis''. Overview The bottom end of the body is an ampulla (a flask-like swelling), which anchors the animal in the tube and enables it to retract its body very quickly when threatened. When the lophophore is extended at the top of the body, cilia (little hairs) on the sides of the tentacles draw food particles to the mouth, which is inside and slightly to one side of the base of the lophophore. Unwanted ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Australis
''Phoronis australis'' is a species of marine horseshoe worm in the phylum Phoronida. It is found in shallow warm-temperate and tropical waters in the eastern Atlantic Ocean and the Indo-Pacific region and was first detected in the Mediterranean Sea in the late twentieth century. These worms live in association with tube-dwelling anemones, particularly those in the genus ''Cerianthus''. Description ''Phoronis australis'' grows to a length of about when extended, with a diameter of about . The lophophore takes the form of a double spiral and there are up to one thousand tentacles on either side. The colour is variable and may be pink, dark red or black. Distribution and habitat ''Phoronis australis'' is native to the Indo-Pacific region and the southeastern Atlantic Ocean. Since the 1990s it has appeared in the Mediterranean Sea, presumably arriving via the Strait of Gibraltar as early records were from Spain. In the Mediterranean, it is normally associated with the tube-dwelling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Io (mythology)
Io (; grc, Ἰώ ) was, in Greek mythology, one of the mortal lovers of Zeus. An Argive princess, she was an ancestor of many kings and heroes, such as Perseus, Cadmus, Heracles, Minos, Lynceus, Cepheus, and Danaus. The astronomer Simon Marius named a moon of Jupiter after Io in 1614. Because her brother was Phoroneus, Io is also known as Phoronis (an adjective form of Phoroneus: "Phoronean"). She was sometimes compared to the egyptian goddess Isis, whereas her Egyptian husband Telegonus was "Osiris". Family In most versions of the legend, Io was the daughter of Inachus, though various other purported genealogies are also known. If her father was Inachus, then her mother would presumably have been Inachus' wife (and sister), the Oceanid nymph Melia, daughter of Oceanus. The 2nd century AD geographer Pausanias also suggests that she is the daughter of Inachus and retells the story of Zeus falling in love with Io, the legendary wrath of Hera, and the metamorphosis by whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Ovalis
''Phoronis ovalis'' is a species of marine horseshoe worm in the phylum Phoronida. It is found in shallow waters in the northeastern Atlantic Ocean, the southeastern Atlantic Ocean, Argentina, and other scattered locations worldwide. These worms secrete a tube into which they can retreat, and burrow into the shells of molluscs. Description ''Phoronis ovalis'' is a small horseshoe worm growing to an extended length of and a diameter of . It exhibits many primitive traits. The lophophore is simple and oval in shape, with 11 to 28 tentacles. The giant nerve fibre typical of the genus is not present. The animal is transparent, sometimes with a brownish lophophore. The haemal, excretory and nervous systems are bilaterally symmetrical, which is not the case with other members of the genus. Ecology ''Phoronis ovalis'' is believed to be a hermaphrodite, and the embryos are brooded in the tube. Asexual reproduction can also take place, either by budding or by transverse fission. The lopho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis (Io)
Io (; grc, Ἰώ ) was, in Greek mythology, one of the mortal lovers of Zeus. An Argive princess, she was an ancestor of many kings and heroes, such as Perseus, Cadmus, Heracles, Minos, Lynceus, Cepheus, and Danaus. The astronomer Simon Marius named a moon of Jupiter after Io in 1614. Because her brother was Phoroneus, Io is also known as Phoronis (an adjective form of Phoroneus: "Phoronean"). She was sometimes compared to the egyptian goddess Isis, whereas her Egyptian husband Telegonus was "Osiris". Family In most versions of the legend, Io was the daughter of Inachus, though various other purported genealogies are also known. If her father was Inachus, then her mother would presumably have been Inachus' wife (and sister), the Oceanid nymph Melia, daughter of Oceanus. The 2nd century AD geographer Pausanias also suggests that she is the daughter of Inachus and retells the story of Zeus falling in love with Io, the legendary wrath of Hera, and the metamorphosis by which Io b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isis (Io)
Io (; grc, Ἰώ ) was, in Greek mythology, one of the mortal lovers of Zeus. An Argive princess, she was an ancestor of many kings and heroes, such as Perseus, Cadmus, Heracles, Minos, Lynceus, Cepheus, and Danaus. The astronomer Simon Marius named a moon of Jupiter after Io in 1614. Because her brother was Phoroneus, Io is also known as Phoronis (an adjective form of Phoroneus: "Phoronean"). She was sometimes compared to the egyptian goddess Isis, whereas her Egyptian husband Telegonus was "Osiris". Family In most versions of the legend, Io was the daughter of Inachus, though various other purported genealogies are also known. If her father was Inachus, then her mother would presumably have been Inachus' wife (and sister), the Oceanid nymph Melia, daughter of Oceanus. The 2nd century AD geographer Pausanias also suggests that she is the daughter of Inachus and retells the story of Zeus falling in love with Io, the legendary wrath of Hera, and the metamorphosis by which Io b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Embryolabi
''Phoronis embryolabi'' is a species of marine horseshoe worm in the phylum Phoronida. It is found in Vostok Bay, where it lives together with '' Nihonotrypaea japonica'', an Axiidea Axiidea is an infraorder of decapod crustaceans. They are colloquially known as mud shrimp, ghost shrimp, or burrowing shrimp; however, these decapods are only distantly related to true shrimp. Axiidea and Gebiidea are divergent infraoders of ... shrimp species, in its burrows. A phylogenetic analysis in 2018 suggests that ''Phoronis embryolabi'' is most closely related to '' Phoronis pallida''.Temereva, E. N.; Neklyudov, B. V. (2018). A New Phoronid Species, ''Phoronis savinkini'' sp. n., from the South China Sea and an Analysis of the Taxonomic Diversity of Phoronida. ''Biology Bulletin''. 45(7): 617-639. References Phoronids Animals described in 2017 {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Psammophila
''Phoronis psammophila'' is a species of marine horseshoe worm in the phylum Phoronida. It lives in a tube projecting from the sea floor in shallow seas around the world. Description ''Phoronis psammophila'' constructs and lives in a rigid, chitinous tube about 10 cm long, incorporating sand grains and detritus. The extended worm is up to 19 centimetres long but it can contract down to about one fifth of this length. The body is pinkish and is divided into two sections. The anterior part, the mesosome, has a cavity, the mesocoel, that extends into the tentacles and keeps them rigid by hydrostatic pressure. The mesosome bears the lophophore, a specialist feeding structure which consists of a ring of up to 190 translucent tentacles arranged in a horseshoe-shape encircling the crescent-shaped mouth. The posterior and larger body section is the metasome and contains the metacoel. It is swollen at the base into an ampulla which may provide grip inside the tube. The gut is U-shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinotrocha
''Phoronis psammophila'' is a species of marine horseshoe worm in the phylum Phoronida. It lives in a tube projecting from the sea floor in shallow seas around the world. Description ''Phoronis psammophila'' constructs and lives in a rigid, chitinous tube about 10 cm long, incorporating sand grains and detritus. The extended worm is up to 19 centimetres long but it can contract down to about one fifth of this length. The body is pinkish and is divided into two sections. The anterior part, the mesosome, has a cavity, the mesocoel, that extends into the tentacles and keeps them rigid by hydrostatic pressure. The mesosome bears the lophophore, a specialist feeding structure which consists of a ring of up to 190 translucent tentacles arranged in a horseshoe-shape encircling the crescent-shaped mouth. The posterior and larger body section is the metasome and contains the metacoel. It is swollen at the base into an ampulla which may provide grip inside the tube. The gut is U-shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Emigi
''Phoronis emigi'' is a species of marine horseshoe worm in the phylum Phoronida. It is found off the coast of Japan and is morphologically similar to ''Phoronis psammophila ''Phoronis psammophila'' is a species of marine horseshoe worm in the phylum Phoronida. It lives in a tube projecting from the sea floor in shallow seas around the world. Description ''Phoronis psammophila'' constructs and lives in a rigid, chit ...''. References Phoronids Animals described in 2014 {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Savinkini
''Phoronis savinkini'' is a species of marine horseshoe worm in the phylum Phoronida. It is found in the Gulf of Tonkin. The holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ... was collected off the coast of Vân Đồn District, Quang Ninh Province in northern Vietnam. References Phoronids Animals described in 2018 {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoronis Muelleri
''Phoronis muelleri'' is a species of marine horseshoe worm in the phylum Phoronid Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies. ...a. References Phoronids Animals described in 1903 {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
