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Dugesia
''Dugesia'' (pronounced, /duˈd͡ʒiʒ(i)ə/) is a genus of dugesiid triclads that contains some common representatives of the class Turbellaria. These common flatworms are found in freshwater habitats of Africa, Eurasia, and Australia. ''Dugesia'' is best known to non-specialists because of its regeneration capacities. ''Dugesia'' is the type genus of the family Dugesiidae. Description ''Dugesia'' species have an elongated body with a slightly triangle-shaped head. Usually they have grey, brown or black colors on the dorsal body surface, the ventral surface uses to be paler. These animals have a couple of eyes constituted by a multicellular pigmented cup with many retinal cells to detect the amount of light in the nearby environment. Sometimes they present supernumerary eyes. At the anterior part of the body, behind the eyes level, they have two of structures called auricles that give the triangle look to the 'head' and that allow them to detect the intensity of water current ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Ryukyuensis
''Dugesia'' (pronounced, /duˈd͡ʒiʒ(i)ə/) is a genus of dugesiid triclads that contains some common representatives of the class Turbellaria. These common flatworms are found in freshwater habitats of Africa, Eurasia, and Australia. ''Dugesia'' is best known to non-specialists because of its regeneration capacities. ''Dugesia'' is the type genus of the family Dugesiidae. Description ''Dugesia'' species have an elongated body with a slightly triangle-shaped head. Usually they have grey, brown or black colors on the dorsal body surface, the ventral surface uses to be paler. These animals have a couple of eyes constituted by a multicellular pigmented cup with many retinal cells to detect the amount of light in the nearby environment. Sometimes they present supernumerary eyes. At the anterior part of the body, behind the eyes level, they have two of structures called auricles that give the triangle look to the 'head' and that allow them to detect the intensity of water current. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Creta
''Dugesia'' (pronounced, /duˈd͡ʒiʒ(i)ə/) is a genus of dugesiid triclads that contains some common representatives of the class Turbellaria. These common flatworms are found in freshwater habitats of Africa, Eurasia, and Australia. ''Dugesia'' is best known to non-specialists because of its regeneration capacities. ''Dugesia'' is the type genus of the family Dugesiidae. Description ''Dugesia'' species have an elongated body with a slightly triangle-shaped head. Usually they have grey, brown or black colors on the dorsal body surface, the ventral surface uses to be paler. These animals have a couple of eyes constituted by a multicellular pigmented cup with many retinal cells to detect the amount of light in the nearby environment. Sometimes they present supernumerary eyes. At the anterior part of the body, behind the eyes level, they have two of structures called auricles that give the triangle look to the 'head' and that allow them to detect the intensity of water current. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Aethiopica
''Dugesia'' (pronounced, /duˈd͡ʒiʒ(i)ə/) is a genus of dugesiid triclads that contains some common representatives of the class Turbellaria. These common flatworms are found in freshwater habitats of Africa, Eurasia, and Australia. ''Dugesia'' is best known to non-specialists because of its regeneration capacities. ''Dugesia'' is the type genus of the family Dugesiidae. Description ''Dugesia'' species have an elongated body with a slightly triangle-shaped head. Usually they have grey, brown or black colors on the dorsal body surface, the ventral surface uses to be paler. These animals have a couple of eyes constituted by a multicellular pigmented cup with many retinal cells to detect the amount of light in the nearby environment. Sometimes they present supernumerary eyes. At the anterior part of the body, behind the eyes level, they have two of structures called auricles that give the triangle look to the 'head' and that allow them to detect the intensity of water current. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Liguriensis
''Dugesia'' (pronounced, /duˈd͡ʒiʒ(i)ə/) is a genus of dugesiid triclads that contains some common representatives of the class Turbellaria. These common flatworms are found in freshwater habitats of Africa, Eurasia, and Australia. ''Dugesia'' is best known to non-specialists because of its regeneration capacities. ''Dugesia'' is the type genus of the family Dugesiidae. Description ''Dugesia'' species have an elongated body with a slightly triangle-shaped head. Usually they have grey, brown or black colors on the dorsal body surface, the ventral surface uses to be paler. These animals have a couple of eyes constituted by a multicellular pigmented cup with many retinal cells to detect the amount of light in the nearby environment. Sometimes they present supernumerary eyes. At the anterior part of the body, behind the eyes level, they have two of structures called auricles that give the triangle look to the 'head' and that allow them to detect the intensity of water current. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Subtentaculata
''Dugesia subtentaculata'' is a species of planarian that inhabits the freshwater of Southern France, several localities on the Iberian Peninsula (including Catalonia), Mallorca, Morocco and Algeria. In 1986 De Vries designated a neotype for ''D. subtentaculata'' after the original type material was lost. She also synonymized the species ''D. iberica'', described from Mallorca and Iberian Peninsula, with ''D. subtentaculta''. Both the neotype and the holotype are from the surroundings of Montpellier, from a locality Locality may refer to: * Locality (association), an association of community regeneration organizations in England * Locality (linguistics) * Locality (settlement) * Suburbs and localities (Australia), in which a locality is a geographic subdivis ... where asexual specimens of ''D. subtentaculata'' and sexual individuals of '' D. gonocephala'' are found living together. Phylogeny ''Dugesia subtentaculata'' is related to other European ''Dugesia'' species. However ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Sicula
''Dugesia sicula'' is a species of dugesiid triclad that lives in freshwater bodies of the Mediterranean Basin, where it is widely distributed. It has been reported from Sicily, Elba and Mallorca, Eivissa, Sardinia,Stocchino et al., 2005 G.A. Stocchino, G. Corso, R. Manconi, S. Casu and M. Pala, "Endemic freshwater planarians of Sardinia: Redescription of Dugesia hepta (Platyhelminthes, Tricladida) with a comparison of the Mediterranean species of the genus", ''Journal of Natural History'' 39 (2005), pp. 1947–1960. Algeria, Tunisia,Charni, M., Harrath, A. H., Sluys, R., Tekaya, S., and Zghal, F. (2004). "The freshwater planarian Dugesia sicula Lepori, 1948 (Platyhelminthes, Tricladida) in Tunisia: ecology, karyology, and morphology". ''Hydrobiologia'' 517, 161-170. MoroccoStocchino, G A., Manconi R., Corso G., Sluys R., Casu S., & Pala M., 2009. "African planarians: morphology and karyology of Dugesia maghrebiana sp. n. (Platyhelminthes, Tricladida) from Tunisia". ''Italian Journ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesia Japonica
''Dugesia japonica'' is a species of freshwater planarian that inhabits freshwater bodies of East Asia, including Japan, Korea, Taiwan, China and northeastern Siberia. However, molecular studies suggest that ''Dugesia japonica'' is polyphyletic A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of converg ... and different populations across its area of occurrence constitute distinct species. Phylogeny ''D. japonica'' position in relation with other ''Dugesia'' species after the work of Lázaro ''et al.'', 2009: Space Experimentation A study was published in 2017 in which a ''Dugesia Japonica'' trunk fragment had been sent into space, and grew with two heads, one on either end of the trunk. However, the influence of space conditions on this phenomenon is debated. References {{Taxonbar, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugesiidae
Dugesiidae is a family of freshwater planarians distributed worldwide (except Antarctica). The type genus is ''Dugesia'' Girard, 1850.Ball, I. R.: A contribution to the phylogeny and biogeography of the freshwater triclads (Platyhelminthes: Turbellaria). Biology of the Turbellaria (Edited by: Riser NW and Morse MP). New York: McGraw-Hill New York 1974, 339-401. Description All species of Dugesiidae live in freshwater environments and have a dorsoventrally flattened body. The head usually has a somewhat triangular shape and has two eyes (except for some subterranean eyeless species). The main differences between Dugesiidae and other freshwater planarians are related to the anatomy of the eyes and the copulatory apparatus. The eye cup in Dugesiidae is composed of several retinal cells, while in other freshwater planarians they are composed of a single cell. All freshwater planarians have an accessory organ called copulatory bursa or ''bursa copulatrix'', which is connected to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planarian
A planarian is one of the many flatworms of the traditional class Turbellaria. It usually describes free-living flatworms of the order Tricladida (triclads), although this common name is also used for a wide number of free-living platyhelminthes. Planaria are common to many parts of the world, living in both saltwater and freshwater ponds and rivers. Some species are terrestrial and are found under logs, in or on the soil, and on plants in humid areas. The triclads are characterized by triply branched intestine and anteriorly situated ovaries, next to the brain. Today the order Tricladida is split into three suborders, according to their phylogenetic relationships: Maricola, Cavernicola and Continenticola. Formerly, the Tricladida was split according to habitats: Maricola, which is marine; Paludicola which inhabits freshwater; and Terricola, which is land-dwelling. Planaria exhibit an extraordinary ability to regenerate lost body parts. For example, a planarian split lengt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Girardia
''Girardia'' is a genus of freshwater planarians belonging to the family Dugesiidae. Distribution The genus ''Girardia'' is endemic to the Americas, from Argentina to Canada, although most species occur in South America. The only two species known to occur naturally in North America, ''Girardia tigrina'' and ''Girardia dorotocephala'', have been introduced in other continents and islands. Description Species of ''Girardia'' are very similar to species of other genera of Dugesiidae and few apomorphies that clearly define the genus are known. One of the few exclusive characteristics is the presence of pigment granules in the outer pharyngeal wall. Until 1991 ''Girardia'' was considered a subgenus of ''Dugesia'', then it was upgraded to the genus rank. However, some works continued to use the old genus for some ''Girardia'' species, mainly for '' Girardia dorotocephala'' and ''Girardia tigrina''. Species *'' Girardia anceps'' (Kenk, 1930) *'' Girardia anderlani'' (Kawakatsu & H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triclad
A planarian is one of the many flatworms of the traditional class (biology), class Turbellaria. It usually describes free-living flatworms of the order Tricladida (triclads), although this common name is also used for a wide number of free-living platyhelminthes. Planaria are common to many parts of the world, living in both saltwater and Fresh water, freshwater ponds and rivers. Some species are Terrestrial animal, terrestrial and are found under logs, in or on the soil, and on plants in humid areas. The triclads are characterized by triply branched intestine and anteriorly situated ovaries, next to the brain. Today the order Tricladida is split into three suborders, according to their phylogenetic relationships: Maricola, Dimarcusidae, Cavernicola and Continenticola. Formerly, the Tricladida was split according to habitats: Maricola, which is marine; Dimarcusidae, Paludicola which inhabits freshwater; and Terricola, which is land-dwelling. Planaria exhibit an extraordinary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schmidtea
''Schmidtea'' is a genus of freshwater triclads. Species of the genus ''Schmidtea'' are widely used in regeneration and developmental studies. Until 1991 ''Schmidtea'' was considered as a subgenus of ''Dugesia ''Dugesia'' (pronounced, /duˈd͡ʒiʒ(i)ə/) is a genus of dugesiid triclads that contains some common representatives of the class Turbellaria. These common flatworms are found in freshwater habitats of Africa, Eurasia, and Australia. ''Dugesi ...'', then it was elevated to the genus rank. Phylogeny Phylogenetic tree including five dugesiid genera after Álvarez-Presas et al., 2008: References Dugesiidae {{flatworm-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
