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Alitta
''Alitta'' is a genus of marine annelids in Nereididae family (commonly known as sandworms or ragworms). There are three recognised species within the genus, ''Alitta grandis'' (Stimpson, 1853), '' Alitta succinea'' (Frey & Leuckart, 1847) and '' Alitta virens'' (M. Sars, 1835).Fauchald, K.; Glasby, C. (2009)Alitta Bakken & Wilson, 2005 Fauchald, K. (Ed) (2009). World Polychaeta database. Accessed through the World Register of Marine Species on 2 August 2010 ''Alitta brandti'' Malmgren, 1865 was originally considered part of the genus, but is now accepted as ''Neanthes brandti Neanthes may refer to: * ''Neanthes'' (polychaete), a genus of polychaetes in the family Nereididae * ''Neanthes'', a genus of beetles in the family Cerambycidae; synonym of '' Acalolepta'' * Neanthes of Cyzicus Neanthes of Cyzicus (; el, Νεάν ...'' (Malmgren, 1865). References Phyllodocida Polychaete genera {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alitta Grandis
''Alitta'' is a genus of marine annelids in Nereididae family (commonly known as sandworms or ragworms). There are three recognised species within the genus, '' Alitta grandis'' (Stimpson, 1853), ''Alitta succinea'' (Frey & Leuckart, 1847) and ''Alitta virens'' (M. Sars, 1835).Fauchald, K.; Glasby, C. (2009)Alitta Bakken & Wilson, 2005 Fauchald, K. (Ed) (2009). World Polychaeta database. Accessed through the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ... on 2 August 2010 ''Alitta brandti'' Malmgren, 1865 was originally considered part of the genus, but is now accepted as '' Neanthes brandti'' (Malmgren, 1865). References Phyllodocida Polychaete genera {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alitta Virens
''Alitta virens'' (common names include sandworm and king ragworm; older scientific names including ''Nereis virens'' are still frequently used) is an annelid worm that burrows in wet sand and mud. It was first described by biologist Michael Sars in 1835. It is classified as a polychaete in the family Nereididae. Sandworms make up a large part of the live sea- bait industry. To fulfill the needs of this industry, some sandworms are commercially grown. " Sandworming", or the harvesting of sandworms from mudflats, employs over 1,000 people in Maine. , the population of sandworms had diminished greatly over the preceding few years due in large part to overharvesting before the worms are able to reproduce by spawning. Sandworms eat seaweed and microorganisms. They have many distinctive traits, including * often reaching great lengths, sometimes exceeding four feet * numerous, highly vascularized parapodia along both sides of their bodies * blue heads with two large pincer teeth wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alitta Succinea
''Alitta succinea'' (known as the pile worm or clam worm) is a species of marine annelid in the family Nereididae (commonly known as ragworms or sandworms). It has been recorded throughout the North West Atlantic, as well as in the Gulf of Maine and South Africa. Description The clam worm can reach up to in length, but most specimens are smaller than this. It is brown colored at the rear, and reddish-brown on the rest of its body. It has an identifiable head with four eyes, two sensory feelers or palps, and many tentacles. The head consists of two segments: the anterior and posterior prostomium. The last body segment is known as the pygidium. Life cycle It is a freeswimming polychaete, scavenging on the bottom of shallow marine waters. It feeds on other worms and algae. To feed, it uses a proboscis, which has two hooks at the end, to grasp prey and draw it into its mouth. Clam worms are an important food source for bottom-feeding fish and crustaceans, though they can protect t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nereididae
Nereididae (formerly spelled Nereidae) are a family of polychaete worms. It contains about 500 – mostly marine – species grouped into 42 genera. They may be commonly called ragworms or clam worms. Characteristics The prostomium of Nereididae bears a pair of palps that are differentiated into two units, the proximal unit is much larger than the distal unit. Parapodia are mostly biramous (only the first two pairs are uniramous). Peristomium fused with the first body segment, with usually two pairs of tentacular cirri. The first body segment with 1-2 pairs tentacular cirri without aciculae. Compound setae present. Notopodia are distinct (rarely reduced), usually with more flattened lobes, notosetae compound falcigers and/or spinigers (rarely notosetae absent). They have two prostomial antennae (absent in ''Micronereis''). Their pharynx, when everted, clearly consists of two portions, with a pair of strong jaws on the distal portion and usually with conical teeth on ... [...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, |
Annelid
The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecologies – some in marine environments as distinct as tidal zones and hydrothermal vents, others in fresh water, and yet others in moist terrestrial environments. The Annelids are bilaterally symmetrical, triploblastic, coelomate, invertebrate organisms. They also have parapodia for locomotion. Most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include earthworms) and leech-like species. Cladistic research since 1997 has radically changed this scheme, viewing leeches as a sub-group of oligochaetes and oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora, Echiura and Sipuncula, previously regarded as separate phyla, are now regarded as sub-groups of polycha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neanthes Brandti , Ancient Greek writer
{{Disambiguation, genus ...
Neanthes may refer to: * ''Neanthes'' (polychaete), a genus of polychaetes in the family Nereididae * ''Neanthes'', a genus of beetles in the family Cerambycidae; synonym of '' Acalolepta'' * Neanthes of Cyzicus Neanthes of Cyzicus (; el, Νεάνθης ὁ Κυζικηνός) was a Greek historian and rhetorician of Cyzicus in Anatolia living in the fourth and third centuries BC. Biography Neanthes was a pupil of Philiscus of Miletus ("who is reasonably ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllodocida
Phyllodocida is an order of polychaete worms in the subclass Aciculata. These worms are mostly marine, though some are found in brackish water. Most are active benthic creatures, moving over the surface or burrowing in sediments, or living in cracks and crevices in bedrock. A few construct tubes in which they live and some are pelagic, swimming through the water column. There are estimated to be more than 4,600 accepted species in the order. Characteristics Phyllodocida are segmented worms and range in size from a few millimetres long to over a metre. Each segment bears a pair of paddle-like parapodia. The prostomium generally has one or two pairs of eyes, a dorsal pair of antennae, a ventral pair of sensory palps and a pair of organs on the neck. The peristomium is a ring, often hidden dorsally by the prostomium and the first segment. There is a muscular proboscis with one or more pairs of jaws. The next few segments tend to differ from those further back in having enlarged do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
