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Stenothyridae
Stenothyridae is a family of small freshwater snails, snails with gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea. This family has no subfamilies. Distribution There are known about 60 freshwater species of Stenothyridae in the Palearctic (6 species), Oriental (about 60 species) and Australasian region (about 5 species)Strong E. E., Gargominy O., Ponder W. F. & Bouchet P. (2008). "Global Diversity of Gastropods (Gastropoda; Mollusca) in Freshwater". '' Hydrobiologia'' 595: 149-166. . and some marine. There are 19 endemic species of Stenothyridae in the Lower Mekong River flowing through Thailand, Laos and Cambodia. Description American malacologist George Washington Tryon firstly defined this taxon as Stenothyrinæ in 1866. Tryon's diagnosis reads as follows: Currently the genus ''Gabbia'' is classified within the family Bithyniidae Bithyniidae is a family of small freshwater snails with an operculum, aquatic gastropod mollu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenothyra Hybocystoides
''Stenothyra'' is a genus of freshwater snails which have a gill and an operculum, aquatic gastropod mollusks in the family Stenothyridae.Bouchet, P. (2014). Stenothyra Benson, 1856. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576162 on 2014-11-07 ''Stenothyra'' is the type genus of the family Stenothyridae. Distribution The distribution of ''Stenothyra'' includes China and Malaysia. Species Species within the genus ''Stenothyra'' include: * '' Stenothyra acuta'' Brandt, 1974 * '' Stenothyra annandalei'' Brandt, 1968 * '' Stenothyra arabica'' Neubert, 1998 * '' Stenothyra australis'' Hedley, 1901 * '' Stenothyra basiangulata'' (Mori, 1938) * '' Stenothyra basisculpta'' Brandt, 1970 * † Stenothyra bellardii (Dollfus & Dautzenberg, 1886) * '' Stenothyra cambodiensis'' Brandt, 1971Attwood S. W., Lokman H. S. & Ong K. Y. (2005). "''Robertsiella silvicola'', a new species of triculine snail (Caenogastropoda: Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenothyra
''Stenothyra'' is a genus of freshwater snails which have a gill and an operculum, aquatic gastropod mollusks in the family Stenothyridae.Bouchet, P. (2014). Stenothyra Benson, 1856. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576162 on 2014-11-07 ''Stenothyra'' is the type genus of the family Stenothyridae. Distribution The distribution of ''Stenothyra'' includes China and Malaysia. Species Species within the genus ''Stenothyra'' include: * ''Stenothyra acuta'' Brandt, 1974 * ''Stenothyra annandalei'' Brandt, 1968 * ''Stenothyra arabica'' Neubert, 1998 * ''Stenothyra australis'' Hedley, 1901 * ''Stenothyra basiangulata'' (Mori, 1938) * ''Stenothyra basisculpta'' Brandt, 1970 * † Stenothyra bellardii (Dollfus & Dautzenberg, 1886) * ''Stenothyra cambodiensis'' Brandt, 1971Attwood S. W., Lokman H. S. & Ong K. Y. (2005). "''Robertsiella silvicola'', a new species of triculine snail (Caenogastropoda: Pomatiopsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Snail
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung (e.g. ''Ampullariidae''). Most feed on algae, but many are detritivores and some are filter feeders. According to a 2008 review of the taxonomy, there are about 4,000 species of freshwater gastropods (3,795–3,972). At least 33–38 independent lineages of gastropods have successfully colonized freshwater environments. It is not possible to quantify the exact number of these lineages yet, because they have yet to be clarified within the Cerit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Littorinimorpha
Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails ( marine species), but also including some freshwater snails ( aquatic species) and land snails (terrestrial species).Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . . 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278 Previously, the Linnaean taxonomy used in the taxonomy of the Gastropoda by Ponder & Lindberg (1997) ranked like this: subclass Orthogastropoda, superorder Caenogastropoda, order Sorbeoconcha, suborder Hypsogastropoda, infraorder Littorinimorpha. The order Littorinimorpha contains many gastropoda families that were formerly placed in the order Mesogastropoda, as introduced by J. Thiele in his work from 1921. Evidence for this group being monophyletic is scanty. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Thailand
The non-marine mollusks of Thailand are a part of the molluscan fauna of Thailand (the wildlife of Thailand). A number of species of non-marine mollusks are found in the wild in Thailand. There is known at least 23 families, 57 genera and 125 species of land gastropods from Eastern Thailand.Dumrongrojwattana P., Matchacheep S., Kharmkhaew A., Pimubol T., Phookitsana S., Wongtanapanya A. (PDF file created 22 December 2006). "Pre-checklist of non-marine mollusks from Eastern Thailand. (Gastropoda: Pulmonata: Basommatophora; Systellomatophora; Stylommatophora)". 7 pp., pages unnumberedPDF. There is known at least 8 species of freshwater gastropods and at least 2 species of freshwater bivalves from the Sakaeo Province in the Eastern Thailand. Boon-ngam P., Sriyarun J., Tanamai S. & Dumrongrojwattana P. (PDF file created 12 January 2010). "การศึกษาเบืองต้ นความหลากชนิดของหอยทากบก และหอยนํ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truncatelloidea
Truncatelloidea is a superfamily of snails, gastropod mollusks in the clade Caenogastropoda.Bouchet, P. (2013). ''Truncatelloidea''. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=722756 on 2013-06-11 The families are marine, brackish, freshwater and terrestrial. Families * Amnicolidae Tryon, 1863 * Anabathridae Keen, 1971 * Assimineidae H. Adams & A. Adams, 1856 * Bithyniidae Gray, 1857 * Bythinellidae Locard, 1893 * Caecidae Gray, 1850 * Calopiidae Ponder, 1999 * Clenchiellidae D. W. Taylor, 1966 * Cochliopidae Tryon, 1866 * Elachisinidae Ponder, 1985 * Emmericiidae Brusina, 1870 * Epigridae Ponder, 1985 * Falsicingulidae Slavoshevskaya, 1975 * Helicostoidae Pruvot-Fol, 1937 * Hydrobiidae Stimpson, 1865 * Hydrococcidae Thiele, 1928 * Iravadiidae Thiele, 1928 * Lithoglyphidae Tryon, 1866 * Lithoglyphulidae Radoman, 1973 * Moitessieriidae Bourguignat, 1863 * Pomatiopsidae Stimpson, 1865 * Spirostyliferinidae Layt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Cambodia
The non-marine mollusks of Cambodia are a part of the molluscan fauna of Cambodia (the wildlife of Cambodia). A number of species of non-marine mollusks are found in the wild in Cambodia. Freshwater gastropods The lower Mekong River area, which includes parts of Thailand, Laos and Cambodia, is considered to be a biodiversity hotspot for freshwater gastropods, with dominant taxa from the families Pomatiopsidae, Stenothyridae, Buccinidae and Marginellidae.Strong E. E., Gargominy O., Ponder W. F. & Bouchet P. (2008). "Global Diversity of Gastropods (Gastropoda; Mollusca) in Freshwater". '' Hydrobiologia'' 595: 149–166. . Pomatiopsidae * ''Neotricula aperta'' (Temcharoen, 1971) Ampullariidae * ... Land gastropods Cyclophoridae * ''Cyclophorus bensoni'' (Pfeiffer, 1854)DO Duc Sang, DO Van Nhuong (2019). "Family Cyclophoridae in Vietnam (Gastropoda: Cyclophoroidea): the genus Cyclophorus Montfort, 1810". Ruthenica 29(1): 1-53. * ''Cyclophorus cambodgensis'' Morlet, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Laos
The non-marine molluscs of Laos are a part of the fauna of Laos ( wildlife of Laos). A number of species of molluscs are found in the wild in Laos. Laos is landlocked country, so there are no marine molluscs. Almost all groups of the land snail fauna in Laos have been less-well studied than those of neighbouring areas. The Lao People’s Democratic Republic, until recently encompassed some of the most significant forest areas remaining in Southeast Asia such as mountainous areas in the north and limestone karsts in central area, and some of the most intact biota left in Asia. Those habitat characteristics also harbor diverse of terrestrial molluscan fauna. Freshwater gastropods Freshwater gastropods in Laos include: Viviparidae * ''Filopaludina martensi'' (Frauenfeld, 1864) * '' Filopaludina filosa'' (Reeve, 1863) * ''Filopaludina sumatrensis'' (Dunker, 1852) Pachychilidae * ''Sulcospira housei'' (I. Lea, 1856) Pomatiopsidae * ''Neotricula aperta'' (Temcharoen, 1971)Attwo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palearctic
The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Siberian region; the Mediterranean Basin; the Sahara and Arabian Deserts; and Western, Central and East Asia. The Palaearctic realm also has numerous rivers and lakes, forming several freshwater ecoregions. The term 'Palearctic' was first used in the 19th century, and is still in use as the basis for zoogeographic classification. History In an 1858 paper for the ''Proceedings of the Linnean Society'', British zoologist Philip Sclater first identified six terrestrial zoogeographic realms of the world: Palaearctic, Aethiopian/Afrotropic, Indian/Indomalayan, Australasian, Nearctic, and Neotropical. The six indicated general groupings of fauna, based on shared biogeography and large-scale geographic barriers to migration. Alfred Wallace a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mekong River
The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia. It is the world's twelfth longest river and the third longest in Asia. Its estimated length is , and it drains an area of , discharging of water annually. From the Tibetan Plateau the river runs through China, Myanmar, Laos, Thailand, Cambodia, and Vietnam. The extreme seasonal variations in flow and the presence of rapids and waterfalls in the Mekong make navigation difficult. Even so, the river is a major trade route between western China and Southeast Asia. Names The Mekong was originally called ''Mae Nam Khong'' from a contracted form of Tai shortened to ''Mae Khong''. In Thai and Lao, ''Mae Nam'' ("Mother of Water ) is used for large rivers and ''Khong'' is the proper name referred to as "River Khong". However, ''Khong'' is an archaic word meaning "river", loaned from Austroasiatic languages, such as Vietnamese ''sông'' (from *''krong'') and Mon ''kruŋ'' "river", which led to Chin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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