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Nymphonidae
Nymphonidae is a family of sea spiders which has representatives in all the oceans. This family contains some 250 species, most of which are found in the genus ''Nymphon''. Nymphonid bodies are between 1 and 15 mm long, the extent between the points of the legs reaching 150 mm. Most species are predators of hydroids. Like most sea spiders, all species in this family have four pairs of legs, except for ''Pentanymphon antarcticum'', which has five pairs, and ''Sexanymphon mirabilis'', which has six pairs. Taxonomy Seven genera are currently recognized:Bamber, R.N., El Nagar, A. & Staples, D. (Eds) (2014). Pycnobase: World Pycnogonida Database. Accessed at http://www.marinespecies.org/pycnobase on 2014-10-30 * '' Boreonymphon'' Sars, 1888 (4 species) * '' Bradypallene'' Kim & Hong, 1987 (1 species) * '' Heteronymphon'' Gordon, 1932 (8 species) * '' Neonymphon'' Stock, 1955 (1 species) * ''Nymphon ''Nymphon'' is a genus of sea spiders in the family Nymphonidae. The speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Spider
Sea spiders are marine arthropods of the order Pantopoda ( ‘all feet’), belonging to the class Pycnogonida, hence they are also called pycnogonids (; named after ''Pycnogonum'', the type genus; with the suffix '). They are cosmopolitan, found in oceans around the world. The over 1,300 known species have legs ranging from to over . Most are toward the smaller end of this range in relatively shallow depths; however, they can grow to be quite large in Antarctic and deep waters. Although "sea spiders" are not true spiders, or even arachnids, their traditional classification as chelicerates places them closer to true spiders than to other well-known arthropod groups, such as insects or crustaceans. This is in dispute, however, as genetic evidence suggests they may be the sister group to all other living arthropods. Description Sea spiders have long legs in contrast to a small body size. The number of walking legs is usually eight (four pairs), but the family Pycnogonidae hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnogonids
Sea spiders are marine arthropods of the order Pantopoda ( ‘all feet’), belonging to the class Pycnogonida, hence they are also called pycnogonids (; named after ''Pycnogonum'', the type genus; with the suffix '). They are cosmopolitan, found in oceans around the world. The over 1,300 known species have legs ranging from to over . Most are toward the smaller end of this range in relatively shallow depths; however, they can grow to be quite large in Antarctic and deep waters. Although "sea spiders" are not true spiders, or even arachnids, their traditional classification as chelicerates places them closer to true spiders than to other well-known arthropod groups, such as insects or crustaceans. This is in dispute, however, as genetic evidence suggests they may be the sister group to all other living arthropods. Description Sea spiders have long legs in contrast to a small body size. The number of walking legs is usually eight (four pairs), but the family Pycnogonidae hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphon Hirtum
''Nymphon'' is a genus of sea spiders in the family Nymphonidae. The species of sea spiders within the genus ''Nymphon'' are all benthic organisms and are found in abyssal and bathyal areas of the ocean. This is a fully marine group and can be found at various depths ranging from the littoral zones to the deep sea. They are found in most major oceans across the globe with a strong distribution around polar regions: Arctic and Antarctic waters. Out of the sea spider genus, ''Nymphon'' is the most rich, with a majority of the species within the genis being found in the Southern Ocean region. This genus may also contain bioluminescent species. Distribution Sea spiders in general are found all around the globe. The ''Nymphon'' genus has been commonly found in waters of higher latitudes and is associated with polar regions and having a more circumpolar distribution than other genus of sea spider. They are extremely abundant within polar regions, with ''Nymphon'' having the most speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphon
''Nymphon'' is a genus of sea spiders in the family Nymphonidae. The species of sea spiders within the genus ''Nymphon'' are all benthic organisms and are found in abyssal and bathyal areas of the ocean. This is a fully marine group and can be found at various depths ranging from the littoral zones to the deep sea. They are found in most major oceans across the globe with a strong distribution around polar regions: Arctic and Antarctic waters. Out of the sea spider genus, ''Nymphon'' is the most rich, with a majority of the species within the genis being found in the Southern Ocean region. This genus may also contain bioluminescent species. Distribution Sea spiders in general are found all around the globe. The ''Nymphon'' genus has been commonly found in waters of higher latitudes and is associated with polar regions and having a more circumpolar distribution than other genus of sea spider. They are extremely abundant within polar regions, with ''Nymphon'' having the most speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphon Brevirostre
''Nymphon brevirostre'' is a species of sea spider first described by George Hodge in 1863. The species highly resembles other members of the genus ''Nymphon ''Nymphon'' is a genus of sea spiders in the family Nymphonidae. The species of sea spiders within the genus ''Nymphon'' are all benthic organisms and are found in abyssal and bathyal areas of the ocean. This is a fully marine group and can be fo ...'' (e.g. ''N. rubrum''), and species identification from morphological traits alone is therefore a complex task.King, P.E., 1974. British Sea Spiders. Synopses of the British Fauna (New Series), 5. Morphology Early life stage morphology White, translucent or reddish, occasionally with violet bands. Slender body (2.5-3.0 mm) and legs that are three and a half times as long. The proboscis is relatively short. The abdomen is thick, and the thoracic segments are broader than long. The palps have five joints. The propodus is longer than the tarsus, which is covered with numero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphon Gracile
''Nymphon gracile'' is a species of sea spider first described by William Elford Leach in 1863. The species highly resembles other members of the genus ''Nymphon'', and species identification from morphological traits alone is, therefore, a complex task.King, P.E., 1974. British Sea Spiders. Synopses of the British Fauna (New Series), 5. Anatomy and general body description When Willian Elford Leach first found the ''Nymphon gracile,'' he described it as an organism having a body that consisted of four feet bearing segments with the first segment being head like, with two eyes on each sides, a cylindrical rostrum inserted under the first segment, mandibles longer than the rostrum that is composed of two joints, a six jointed palpi that were inserted under the mandible, and eight feet. He also stated that the egg carrying part of the female is composed of ten joints. In general terms, the body is composed of four segments and has eight legs. Each leg is composed of eight segment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroid (zoology)
Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater '' Hydra'' are solitary, with the polyp attached directly to the substrate. When these produce buds, they become detached and grow on as new individuals. The majority of hydroids are colonial. The original polyp is anchored to a solid substrate and forms a bud which remains attached to its parent. This in turn buds and in this way a stem is formed. The arrangement of polyps and the branching of the stem is characteristic of the species. Some species have the polyps budding directly off the stolon which roots the colony. The polyps are connected by epidermis which surrounds a gastrovascular cavity. The epidermis secretes a chitinous skeleton which supports the stem and in some hydroids, the skeleton extends into a cup shape surrounding the polyp. Most of the polyps are gastrozooids or feeding polyps, but some are specialised reprodu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nymphon Leptocheles
''Nymphon leptocheles'' is a species of sea spider first described by Georg Ossian Sars in 1888. The species greatly resembles other members of the genus '' Nymphon'', and species identification from morphological traits alone is therefore a complex task. Habitat The species inhabits the sublittoral zone and occurs amongst hydroids and sea anemones. Diet ''N. leptocheles'' feeds on coelenterate Radiata or Radiates is a historical taxonomic rank that was used to classify animals with radially symmetric body plans. The term Radiata is no longer accepted, as it united several different groupings of animals that do not form a monophylet ...s. References {{Taxonbar, from=Q3908579 Pycnogonids Taxa named by Georg Ossian Sars Animals described in 1888 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tubularia Indivisa
''Tubularia indivisa'', or oaten pipes hydroid, is a species of large hydroid native to the northeastern Atlantic Ocean, the North Sea, Norwegian Sea, and the English Channel. The conical solitary polyps are found on dull yellow unbranched stems that reach in height with a diameter of . They may be fused to a small number of other individual stems at their bases. The pinkish to red polyps resemble flowers, having two concentric rings of tentacles, with the outer rings being paler and longer than the inner ring. At the center is a pale pink gonotheca. They are preyed upon by nudibranchs. Distribution A common species on coasts of the British Isles and adjacent parts of the north-east Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ....Picton, B.E. & Morrow, C.C. ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
