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Pectinariidae
Pectinariidae, or the trumpet worms or ice cream cone worms, are a family of marine polychaete worms that build tubes using grains of sand roughly resembling ice cream cones or trumpets. These structures can be up to long. The earliest pectinariid fossils are known from the Cretaceous. Ecology Pectinariids are sessile burrowing tube dwellers, which can be found in fine-grained sediment. They position the wider end of their tube downwards, and use their stout golden setae for digging while they use tentacles for sorting the particles which they ingest. Half of the particles which the worm digs through are excreted as pseudofaeces. Genera The systematics of the pectinariids have been the subject of some debate. Previously, only two genera have been recognized, but three subgenera have been elevated to full genera by some scholars.Hutchings, P., & Peart, R. (2002). A review of the genera of Pectinariidae (Polychaeta) together with a description of the Australian fauna. RECORDS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petta (polychaete)
''Petta ''is a genus in the polychaete'' ''family'' Pectinariidae''. Systematics There are currently eight recognized species in the genus * ''Petta alissoni'' - Nogueira, Ribeiro, Carrerette & Hutchings, 2019 *''Petta assimilis'' - McIntosh, 1885 *''Petta brevis'' - Zhang & Hutchings, 2021 *''Petta investigatoris'' - Zhang, Hutchings & Kupriyanova, 2019 * ''Petta pellucida'' - (Ehlers, 1887) * ''Petta pusilla'' - Malmgren, 1866 * ''Petta tenuis'' - Caullery, 1944 *''Petta williamsonae Petta may refer to: People * Bobby Petta, Dutch-Indonesian footballer * Francesco Miano-Petta, retired amateur Italian freestyle wrestler * Gustavo Petta, Brazilian politician * Julia Petta, Italian housewife known as The Italian Bride * Nicholas P ...'' - Zhang, Hutchings & Kupriyanova, 2019 References Terebellida Annelid genera {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagis Koreni
''Lagis koreni'', commonly known as the trumpet worm, is a species of marine polychaete worm found in European waters. It lives within a narrow conical tube made of grains of sand and shell fragments. Taxonomy In 1986, Holthe studied the family Pectinariidae and recognised four subgenera within the genus '' Pectinaria'' although he did not justify how he had come to this decision. In further reviews in 1973 and again in 1984, neither Long nor Wolf recognised these subgenera. In 2002, Pat Hutchings and Rachael Peart undertook a further review of the family. Among other findings, they determined that the ''Pectinaris'' subgenera should be given full species status. So the species that had been classified as ''Pectinaria koreni'' and later as ''Pectinaria'' (''Lagis'') ''koreni'' became ''Lagis koreni''. Description The trumpet worm is about long and relatively broad. The head has two pairs of tentacles and two bunches of gleaming golden spines which are used for digging. It also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terebellida
Terebellida make up an order of the Polychaeta class, commonly referred to as "bristle worms". Together with the Sabellida, the Spionida and some enigmatic families of unclear taxonomic relationship (e.g. the Saccocirridae), they make up the subclass Canalipalpata, one of the three main clades of polychaetes. Like most polychaetes, almost all members of the ''Terebellida'' are marine organisms. Most are small, sessile detritivores (deposit feeders) which live in small tubes they build from mud or similar substrate, or burrow in the sand. Their central nervous system displays characteristic apomorphies. Systematics There is little consensus on the number of families. Some treatments accept as little as five, while other authors list over a dozen. Here, the more inclusive view of the Terebellida is followed, based on a major review of polychaete systematics. Cladistic studies have hitherto only analyzed a rather small proportion of polychaetes; hence it may be that so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polychaete
Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class. Common representatives include the lugworm (''Arenicola marina'') and the sandworm or clam worm ''Alitta''. Polychaetes as a class are robust and widespread, with species that live in the coldest ocean temperatures of the abyssal plain, to forms which tolerate the extremely high temperatures near hydrothermal vents. Polychaetes occur throughout the Earth's oceans at all depths, from forms that live as plankton near the surface, to a 2- to 3-cm specimen (still unclassified) observed by the robot ocean probe ''Nereus'' at the bottom of the Challenger Deep, the deepest known spot in the Earth's oceans. Only 168 species (less than 2% of all polychaetes) are known from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagis
''Lagis'' is a genus of annelids belonging to the family Pectinariidae. The genus has almost cosmopolitan distribution. Species: *''Lagis abranchiata'' *''Lagis australis'' *''Lagis bocki'' *''Lagis crenulatus'' *''Lagis hupferi'' *''Lagis koreni'' *''Lagis neapolitana'' *''Lagis plurihamus'' *''Lagis portus'' *''Lagis pseudokoreni'' *''Lagis tenera ''Lagis'' is a genus of annelids belonging to the family Pectinariidae. The genus has almost cosmopolitan distribution. Species: *''Lagis abranchiata'' *'' Lagis australis'' *''Lagis bocki'' *''Lagis crenulatus'' *''Lagis hupferi'' *''Lagi ...'' References {{Taxonbar, from=Q3896646 Terebellida Annelid genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pectinaria (annelid)
''Pectinaria'' is a genus of sand tube-building annelid fanworms in the family Pectinariidae. Species Species within this genus include: *'' Pectinaria aegyptia'' (Savigny, 1822) * '' Pectinaria antipoda'' Schmarda, 1861 * '' Pectinaria belgica'' (Pallas, 1766) * ''Pectinaria bifurcata'' Blainville, 1828 * '' Pectinaria brevispinis'' Grube, 1878 * ''Pectinaria californiensis'' Hartman, 1941 * '' Pectinaria carnosa'' Wong & Hutchings, 2015 * '' Pectinaria chilensis'' Nilsson, 1928 * ''Pectinaria clava'' Grube, 1878 * ''Pectinaria conchilega'' Grube, 1878 * ''Pectinaria dimai'' Zachs, 1933 * ''Pectinaria dodeka'' Hutchings & Peart, 2002 * ''Pectinaria gouldii'' (Verrill, 1873) * '' Pectinaria hartmanae'' (Reish, 1968) * ''Pectinaria hiuchiensis'' Kitamori, 1965 * ''Pectinaria incerta'' (Chenu, 1842) * ''Pectinaria kanabinos'' Hutchings & Peart, 2002 * ''Pectinaria kiiensis'' Katto, 1977 * '' Pectinaria nana'' Wesenberg-Lund, 1949 * '' Pectinaria ningalooensis'' Zhang & Hutchings, 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Louis Armand De Quatrefages De Bréau
Jean Louis Armand de Quatrefages de Bréau (10 February 1810 – 12 January 1892) was a French biologist. Life He was born at Berthézène, in the commune of Valleraugue ( Gard), the son of a Protestant farmer. He studied science and then medicine at the University of Strasbourg, where he took the double degree of M.D. and D.Sc., one of his theses being a ''Théorie d'un coup de canon'' (November 1829); next year he published a book, ''Sur les arolithes'', and in 1832 a treatise on ''L'Extraversion de la vessie''. Moving to Toulouse, he practised medicine for a short time, and contributed various memoirs to the local ''Journal de Médecine'' and to the ''Annales des sciences naturelles'' (1834—36). But being unable to continue his research in the provinces, he resigned the chair of zoology to which he had been appointed, and in 1839 settled in Paris, where he found in Henri Milne-Edwards a patron and a friend. Elected professor of natural history at the Lycée Napoléon in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine (ocean)
The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided."Ocean." ''Merriam-Webster.com Dictionary'', Merriam-Webster, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', " chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sessility (zoology)
Sessility is the biological property of an organism describing its lack of a means of self-locomotion. Sessile organisms for which natural ''motility'' is absent are normally immobile. This is distinct from the botanical concept of sessility, which refers to an organism or biological structure attached directly by its base without a stalk. Sessile organisms can move via external forces (such as water currents), but are usually permanently attached to something. Organisms such as corals lay down their own substrate from which they grow. Other sessile organisms grow from a solid such as a rock, dead tree trunk, or a man-made object such as a buoy or ship's hull. Mobility Sessile animals typically have a motile phase in their development. Sponges have a motile larval stage and become sessile at maturity. Conversely, many jellyfish develop as sessile polyps early in their life cycle. In the case of the cochineal, it is in the nymph stage (also called the crawler stage) that the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Setae
In biology, setae (singular seta ; from the Latin word for " bristle") are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Annelid setae are stiff bristles present on the body. They help, for example, earthworms to attach to the surface and prevent backsliding during peristaltic motion. These hairs make it difficult to pull a worm straight from the ground. Setae in oligochaetes (a group including earthworms) are largely composed of chitin. They are classified according to the limb to which they are attached; for instance, notosetae are attached to notopodia; neurosetae to neuropodia. Crustaceans have mechano- and chemosensory setae. Setae are especially present on the mouthparts of crustaceans and can also be found on grooming limbs. In some cases, setae are modified into scale like structures. Setae on the legs of krill and other small crustaceans help them to gather phytoplankton. It captures them and all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudofaeces
Pseudofeces or pseudofaeces are a specialized method of expulsion that filter-feeding bivalve mollusks (and filter-feeding gastropod mollusks) use in order to get rid of suspended particles such as particles of grit which cannot be used as food, and which have been rejected by the animal. The rejected particles are wrapped in mucus, and are then expelled without having passed through the digestive tract.Shimek, Ronald L''Phytoplankton, A Necessity For Clams''/ref> Thus, although they may closely resemble the mollusk's real feces, they are not actually feces, hence the name pseudofeces, meaning false feces. Occurrence Bivalves which exhibit this behavior are numerous and include Ostreidae oysters (such as ''Crassostrea'') and Dreissenidae false mussels (such as ''Dreissena''). Gastropods which filter feed are in a minority, but include the mudsnail genus Process Bivalves have two Siphon (mollusc), siphons or apertures at the ''posterior'' edge of their mantle cavity: an inhalan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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