|
Bithynia Fuchsiana
''Bithynia fuchsiana'' is a species of small freshwater snail with a gill and an operculum. It an aquatic gastropod mollusk in the family Bithyniidae. Distribution Distribution of this species includes: * southern and eastern China * Taiwan * the Red River delta, Vietnam. Ecology ''Bithynia fuchsiana'' inhabits lentic habitats such as lakes, rice fields, ponds and others. It serves as the first intermediate host for the trematode ''Clonorchis sinensis''.World Health Organization The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. The WHO Constitution states its main objective as "the attainment by all peoples of the highest possible level of h ... (1995). ''Control of Foodborne Trematode Infection''. WHO Technical Report Series. 849PDF part 1 page 125. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Franz Von Möllendorff
Otto Franz von Möllendorff (24 December 1848 – 17 August 1903) was a German scientist, a malacologist. In 1894, Jose Rizal sent (from Dapitan) to Möllendorff (who was in Manila at that time) specimens of Tonnidae, large sea snails known as tun shells together with some specimens of a species of small freshwater snails stored in glass vials. The species of small snails was later named ''Oncomelania hupensis, Oncomelania quadrasi'' by Möllendorff in 1895 in honour of Don José Florencio Quadras, a Spanish malacologist who was also based in Manila at that time.Davis GM (1979). "The origin and evolution of the gastropod family Pomatiopsidae, with emphasis on the Mekong river Triculinae". ''Academy of natural Sciences of Philadelphia'', Monograph 20: 1-120. at Google Books A species of rat snake, ''Elaphe moellendorffi'', is named in his honor. Bibliography''Reisen im Archipel der Philippinen'' *WoRMSlist of marine species named by Otto Franz von Möllendorff References External ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...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] |
Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operculum (gastropod)
The operculum (; ) is a corneous or calcareous anatomical structure like a trapdoor that exists in many (but not all) groups of sea snails and freshwater snails, and also in a few groups of land snails; the structure is found in some marine and freshwater gastropods, and in a minority of terrestrial gastropods, including the families Helicinidae, Cyclophoridae, Aciculidae, Maizaniidae, Pomatiidae, etc. The operculum is attached to the upper surface of the foot and in its most complete state, it serves as a sort of "trapdoor" to close the aperture of the shell when the soft parts of the animal are retracted. The shape of the operculum varies greatly from one family of gastropods to another. It is fairly often circular, or more or less oval in shape. In species where the operculum fits snugly, its outline corresponds exactly to the shape of the aperture of the shell and it serves to seal the entrance of the shell. Many families have opercula that are reduced in size, and which a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bithyniidae
Bithyniidae is a family of small freshwater snails with an operculum, aquatic gastropod molluscs in the clade Littorinimorpha.Bouchet, P.; Gofas, S. (2015). Bithyniidae Gray, 1857. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=182697 on 2016-02-28 Their minute shell is often colored. They are characterized by a calcareous operculum, a lobe on the upper surface of the neck. The ctenidium, the respiratory gill-comb, is very broad. They have a ciliary feeding habit. The kidney has a large extension towards the mantle. Genera Genera in the family Bithyniidae include: * '' Alocinna'' Annandale & Prashad, 1919 * ''Bithynia'' Leach, 1818 - type genusGlöer P. (2002). ''Die Süßwassergastropoden Nord- und Mitteleuropas''. Die Tierwelt Deutschlands, ConchBooks, Hackenheim, 326 pp., . Reference for subgenera of genus ''Bithynia''. ** Subgenus ''Bithynia'' Leach, 1818 ** Subgenus '' Codiella'' Locard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of China
The non-marine mollusks of China are a part of the molluscan fauna of China (wildlife of China). A number of species of non-marine mollusks are found in the wild in China. Freshwater gastropods Amnicolidae * '' Erhaia chinensis'' (Liu & Zhang, 1979)Edmund Gittenberger, Choki Gyeltshen & Björn Stelbrink (2022). "The genus Erhaia (Gastropoda, Truncatelloidea, Amnicolidae), with a new species from Bhutan". ZooKeys 1085: 1–9. doi: 10.3897/zookeys.1085.77900 * ''Erhaia daliensis'' Davis & Kuo in Davis et al., 1985 * ''Erhaia gongjianguoi'' (Kang, 1983) * '' Erhaia hubeiensis'' (Liu, Zhang & Wang, 1983) * '' Erhaia jianouensis'' (Liu & Zhang, 1979) * '' Erhaia kunmingensis'' Davis & Kuo in Davis et al., 1985 * ''Erhaia lii'' (Kang, 1985) * '' Erhaia liui'' (Kang, 1985) * '' Erhaia robusta'' (Kang, 1986) * '' Erhaia shimenensis'' (Liu, Zhang & Chen, 1982) * ''Erhaia tangi'' (Cheng, Wu, Li & Lin, 2007) * ''Erhaia triodonta'' (Liu, Wang & Zhang, 1991) * ''Erhaia wantanensis'' (Kang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Taiwan
The non-marine mollusks of Taiwan are a part of the molluscan fauna of Taiwan. A number of species of non-marine mollusks are found in the wild in Taiwan. ;Summary table of number of species Land gastropods Assimineidae * '' Assiminea nitida'' (Pease, 1864) – on Pratas IslandWu S.-P., Hwang C.-C., Huang H.-M., Chang H.-W., Lin Y.-S. & Lee P.-F. (2007). "Land Molluscan Fauna of the Dongsha Island with Twenty New Recorded Species". ''Taiwania'' 52(2): 145-151PDF. Truncatellidae * '' Truncatella guerinii'' A. & J. B. Villa, 1841 – on Pratas Island * '' Truncatella pfeifferi'' Martens, 1860 – on Pratas Island Ellobiidae * '' Melampus castanea'' (Mühlfeld, 1818) – on Pratas Island * '' Melampus nuxeastaneus'' Kuroda, 1949 – on Pratas Island * ''Melampus flavus'' (Gmelin, 1791) – on Pratas Island * '' Melampus sculptus'' (Pfeiffer, 1855) – on Pratas Island * '' Melampus taeniolatus'' (Hombron & Jacquinot, 1854) – on Pratas Island * '' Tralia malanastoma'' G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red River (Asia)
The Red River, also known as the Hong River (; vi, Sông Hồng; Chữ Nôm: 瀧紅; Chữ Hán: 紅河), the ' and ' (lit. "Mother River") in Vietnamese, and the (, ' Nguyên Giang) in Chinese, is a -long river that flows from Yunnan in Southwest China through northern Vietnam to the Gulf of Tonkin. According to C. Michael Hogan, the associated Red River Fault was instrumental in forming the entire South China Sea at least as early as 37 million years before present. The name red and southern position in China are associated in traditional cardinal directions. Geography The Red River begins in China's Yunnan province in the mountains south of Dali. Main headstreams Leqiu River, Xi River and Juli River confluence at Nanjian where they form the Lishe River. The Lishe River meets with another headstream, the Yijie River at Hongtupo, Chuxiong Prefecture. It flows generally southeastward, passing through Yi and Dai ethnic minority areas before leaving C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Vietnam
The non-marine molluscs of Vietnam are a part of the molluscan fauna of Vietnam ( wildlife of Vietnam). A number of species of non-marine mollusks are found in the wild in Vietnam. There are good reasons to suppose that Vietnam, with a surface of 332,000 km2, a large variety of habitats, and many different limestone 'islands' that differ from each other in faunal composition, will have a rich diversity of terrestrial molluscs. Numerous non-marine mollusc species, including more than 850 species of land gastropods, have been described from the country but many others still await discovery and description. Freshwater gastropods Freshwater gastropods in Vietnam include: Neritidae * '' Neritina violacea'' Ampullariidae * ''Pila polita'' * '' Pila conica'' * '' Pila ampullacea'' * ''Pomacea canaliculata'' * ''Pomacea insularum'' (d'Orbigny, 1835) Viviparidae * '' Cipangopaludina lecythoides'' * '' Idiopoma umblicata'' * '' Sinotaia aeruginosa'' * '' Mekongia lithophaga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_torquata_002.jpg "Click for more on -> Operculum (gastropod)")
