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Physidae
Physidae, common name, commonly called the bladder snails, is a family (biology), family of small air-breathing freshwater snails, Aquatic animal, aquatic pulmonate gastropod molluscs in the superfamily Lymnaeoidea.MolluscaBase eds. (2021). MolluscaBase. Physidae Fitzinger, 1833. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=160452 on 2021-06-26 Overview These fresh water snails are present in aquariums and ponds, as well as in wild areas. They are also commonly referred to as tadpole snails or pouch snails. They eat algae, diatoms and detritus, including dead leaves. The populations are regulated by the abundance of food and space. They are widespread, abundant, and tolerant to pollution. These snails are common in the North Temperate to Arctic Zones and throughout the Americas, in readily accessible habitats such as ditches, ponds, lakes, small streams, and rivers. The family has been recognized since the 19th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physa Marmorata
''Stenophysa marmorata'' is a species of air-breathing freshwater snail, an aquatic animal, aquatic gastropod mollusk in the family Physidae.MolluscaBase eds. (2021). MolluscaBase. Stenophysa marmorata (Guilding, 1828). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1253849 on 2022-01-14 Distribution This species occurs in the Lesser Antilles on List of non-marine molluscs of Dominica, Dominica.Reeves W. K., Dillon Jr. R. T. & Dasch G. A. (2008). "Freshwater snails (Mollusca: Gastropoda) from the Commonwealth of Dominica with a discussion of their roles in the transmission of parasites". ''American Malacological Bulletin'' 24: 59-63. PDF. and St. Vincent References * Robart, G., Mandahl-Barth, G. & Ripert, C. (1977). Inventaire, repartition geographique et ecologie des mollusques dulcaquicoles d'Haiti (Caraibes). Haliotis. 8: 159-171. External links Guilding, I. (1828). Observations on the zoology of the Cari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physa Gyrina
''Physa'' is a genus of small, left-handed or sinistral, air-breathing freshwater snails, aquatic pulmonate gastropod molluscs in the subfamily Physinae of the family Physidae.MolluscaBase eds. (2021). MolluscaBase. Physa Draparnaud, 1801. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=181551 on 2021-06-26 These snails eat algae, diatoms and detritus. Anatomy Members of the freshwater pulmonate family Physidae possess a complex of muscles that is unique amongst gastropods. This complex was given the name "physid musculature". The physid musculature has two main components, the physid muscle ''sensu stricto'' and the fan muscle. The physid musculature is responsible for a unique ability of physids to rapidly flick their shells from side to side — a reaction that frequently enables them to escape predation. Shell description These small snails, like all the species in the family Physidae, have shells that are sini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physella Acuta
''Physella acuta'' is a species of small, left-handed or sinistral, air-breathing freshwater snail, an Aquatic animal, aquatic gastropod mollusk in the family Physidae. Common names include European physa, tadpole snail, bladder snail, and acute bladder snail. Etymology The name ''Physella'' means "little bladder", from Greek ''physa'', and the Diminutive, diminuative ending "-ella". This is in reference to the genus ''Physa'', which ''P. acuta'' has, at times, been placed in. ''Acuta'' is a Latin word meaning sharp. Shell description Snails in the family Physidae have gastropod shell, shells that are sinistral, which means that if the shell is held with the aperture (mollusc), aperture facing the observer and the spire (mollusc), spire pointing up, then the aperture is on the left-hand side. The shells of ''Physella'' species have a long and large aperture, a pointed spire, and no operculum. The shells are thin and corneous and rather transparent. History It was once though ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physa Heterostropha
''Physella acuta'' is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Common names include European physa, tadpole snail, bladder snail, and acute bladder snail. Etymology The name ''Physella'' means "little bladder", from Greek ''physa'', and the diminuative ending "-ella". This is in reference to the genus ''Physa'', which ''P. acuta'' has, at times, been placed in. ''Acuta'' is a Latin word meaning sharp. Shell description Snails in the family Physidae have shells that are sinistral, which means that if the shell is held with the aperture facing the observer and the spire pointing up, then the aperture is on the left-hand side. The shells of ''Physella'' species have a long and large aperture, a pointed spire, and no operculum. The shells are thin and corneous and rather transparent. History It was once thought that the indigenous distribution of ''Physella acuta'' is Mediterranean.Glöer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Snail
Freshwater snails are gastropod mollusks that 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 gastropod shell, shell, with very few exceptions. Some groups of snails that live in freshwater Respiratory system, respire using gills, whereas Pulmonata, 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 feeding, filter feeders. Freshwater snails are indirectly among the deadliest animals to humans, as they carry parasitic worms that cause schistosomiasis, a disease estimated to kill between 10,000 and 200,000 people annually. There are thousands of known species, and at least 33–38 independent Lineage (evolut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haitia Acuta
''Physella acuta'' is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Common names include European physa, tadpole snail, bladder snail, and acute bladder snail. Etymology The name ''Physella'' means "little bladder", from Greek ''physa'', and the diminuative ending "-ella". This is in reference to the genus ''Physa'', which ''P. acuta'' has, at times, been placed in. ''Acuta'' is a Latin word meaning sharp. Shell description Snails in the family Physidae have shells that are sinistral, which means that if the shell is held with the aperture facing the observer and the spire pointing up, then the aperture is on the left-hand side. The shells of ''Physella'' species have a long and large aperture, a pointed spire, and no operculum. The shells are thin and corneous and rather transparent. History It was once thought that the indigenous distribution of ''Physella acuta'' is Mediterranean.Glöer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physella Acuta Shell
''Physella'' is a genus of small, left-handed or sinistral, air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Physidae. These snails eat algae, diatoms and other detritus. Shell description Snails in the family Physidae have shells that are sinistral, which means that if the shell is held with the spire pointing up and the aperture facing the observer, the aperture is on the left-hand side. The shells of ''Physella'' species have a long and large aperture, a pointed spire, and no operculum. The shells are thin and corneous and rather transparent. Species Species in the genus include: * ''Physella acuta'' (Draparnaud, 1805) - Pewter Physa, type species, synonyms: ''Physella heterostropha'' (Say, 1817), ''Physella integra'' (Haldeman, 1841)Dillon R. T., Wethington A. R., Rhett J. M. & Smith T. P. (2002). "Populations of the European freshwater pulmonate ''Physa acuta'' are not reproductively isolated from American ''Physa heterostopha'' or ''Phy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physa Fontinalis
''Physa fontinalis'', common name the common bladder snail, is a species of air-breathing freshwater snail, an aquatic gastropod mollusc in the family Physidae. The shells of species in the genus ''Physa'' are left-handed or sinistral. Description The shell is 7 to 12 mm high and 4 to 7 mm wide. The spiral has four to five whorls ( the last of which forms more than three-quarters of the shell height) and the apex is rounded. The shell is very thin-walled, translucent, shiny and is a pale horn colour. The aperture is wide and oval, and the mouth edge is very thin and brittle. The body color is brown to black. The edges of the mantle extend as finger-like lobes over the exterior of the shell. The tentacles are long, slender and cylindrical, with the eyes at the base. The foot is long and thin. Bladder snails are hermaphrodites. Ecology This species is an opportunist inhabiting streams, rivers, ponds, lakes, springs, canals and irrigation ditches. It occurs in both nut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulmonate
Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families. The taxon Pulmonata as traditionally defined was found to be polyphyletic in a molecular study per Jörger ''et al.'', dating from 2010. Pulmonata are known from the Carboniferous period to the present. Pulmonates have a single atrium and kidney, and a concentrated symmetrical nervous system. The mantle cavity is on the right side of the body, and lacks gills, instead being converted into a vascularised lung. Most species have a shell, but no operculum, although the group does also include several shell-less slugs. Pulmonates are hermaphroditic, and some groups possess love darts. Linnean taxonomy The taxonomy of this group according to the taxonomy of the Gastrop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lymnaeoidea
Lymnaeoidea is a taxonomic superfamily of air-breathing freshwater snails that belong to the superorder Hygrophila.MolluscaBase eds. (2020). MolluscaBase. Lymnaeoidea Rafinesque, 1815. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=489336 on 2020-06-27 Families * Acroloxidae Thiele, 1931 * Bulinidae P. Fischer & Crosse, 1880 * Burnupiidae Albrecht, 2017 * Clivunellidae Kochansky-Devidé & Slišković, 1972 † * Lymnaeidae Rafinesque, 1815 * Physidae Fitzinger, 1833 * Planorbidae Planorbidae, common name the ramshorn snails or ram's horn snails, is a family (biology), family of air-breathing freshwater snails, Aquatic animal, aquatic pulmonate gastropod Mollusca, molluscs. Unlike most molluscs, the blood of ram's horn sn ... Rafinesque, 1815 ;Families brought into synonymy: * Ancylidae Rafinesque, 1815: synonym of Ancylinae Rafinesque, 1815 * Limnophysidae W. Dybowski, 1903: synonym of Lymnaeidae Rafinesque, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as '' Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' ( Modern French '). The word has been modified to "crayfish" by association with "fish" ( French language">Modern French '). The word has been modified to "crayfish" by association with "fish" ( American variant "crawfish" is similarly derived. Some kinds of crayfish are known lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Costa Rica
Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the Pacific Ocean to the southwest, as well as Maritime boundary, maritime border with Ecuador to the south of Cocos Island. It has a population of around five million in a land area of nearly . An estimated people live in the capital and largest city, San José, Costa Rica, San José, with around two million people in the surrounding metropolitan area. The sovereign state is a Presidential system, presidential republic. It has a long-standing and stable Constitution of Costa Rica, constitutional democracy and a highly educated workforce. The country spends roughly 6.9% of its budget (2016) on education, compared to a global average of 4.4%. Its economy, once heavily dependent on agriculture, has diversified to include sectors such as finance, corporate services for foreign companies, pharmaceut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
