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.[4]
All freshwater planarians have an accessory organ called copulatory bursa or bursa copulatrix, which is connected to the genital atrium by a canal. In Dugesiidae, the oviducts, which conduct the eggs from the ovaries to the genital atrium, open into the bursal canal, while in other freshwater planarians they open directly into the genital atrium.[5]
Phylogenyedit
According to molecular analyses, Dugesiidae is the sister group of land planarians.[6][4]
Phylogenetic supertree including all major triclad groups after Sluys et al., 2009:[1]
^ abSluys, R.; Kawakatsu, M.; Riutort, M.; Baguñà, J. (2009). "A new higher classification of planarian flatworms (Platyhelminthes, Tricladida)". Journal of Natural History. 43 (29–30): 1763–1777. doi:10.1080/00222930902741669.
^Sluys, R.; Solà, E.; Gritzalis, K.; Vila-Farré, M.; Mateos, E.; Riutort, M. (2013). "Integrative delineation of species of Mediterranean freshwater planarians (Platyhelminthes: Tricladida: Dugesiidae)". Zoological Journal of the Linnean Society. 169 (3): 523. doi:10.1111/zoj.12077.
^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.
^ abcÁlvarez-Presas, M.; Baguñà, J.; Riutort, M. (2008). "Molecular phylogeny of land and freshwater planarians (Tricladida, Platyhelminthes): From freshwater to land and back". Molecular Phylogenetics and Evolution. 47 (2): 555–568. doi:10.1016/j.ympev.2008.01.032. PMID 18359250.
^Vries, Elizabeth J.; Sluys, Ronald (1991). "Phylogenetic relationships of the genus Dugesia (Platyhelminthes, Tricladida, Paludicola)". Journal of Zoology. 223 (1): 103–116. doi:10.1111/j.1469-7998.1991.tb04752.x. ISSN 0952-8369.
^Carranza, S.; Littlewood, D. T.; Clough, K. A.; Ruiz-Trillo, I.; Baguñà, J.; Riutort, M. (1998). "A robust molecular phylogeny of the Tricladida (Platyhelminthes: Seriata) with a discussion on morphological synapomorphies". Proceedings of the Royal Society B: Biological Sciences. 265 (1396): 631–640. doi:10.1098/rspb.1998.0341. PMC1689013. PMID 9881470.
Data related to Dugesiidae at Wikispecies
April 13, 2024
dugesiidae, family, freshwater, planarians, distributed, worldwide, except, antarctica, type, genus, dugesia, girard, 1850, girardia, dugesia, down, scientific, classificationdomain, eukaryotakingdom, animaliaphylum, platyhelminthesorder, tricladidasuborder, c. Dugesiidae is a family of freshwater planarians distributed worldwide except Antarctica The type genus is Dugesia Girard 1850 3 DugesiidaeGirardia sp top and Dugesia sp down Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum PlatyhelminthesOrder TricladidaSuborder ContinenticolaFamily DugesiidaeBall 1974Genera 1 2 Bopsula Cura Dugesia Eviella Girardia Neppia Recurva Reynoldsonia Romankenkius Schmidtea Spathula WeissiusDescription editAll 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 4 All freshwater planarians have an accessory organ called copulatory bursa or bursa copulatrix which is connected to the genital atrium by a canal In Dugesiidae the oviducts which conduct the eggs from the ovaries to the genital atrium open into the bursal canal while in other freshwater planarians they open directly into the genital atrium 5 Phylogeny editAccording to molecular analyses Dugesiidae is the sister group of land planarians 6 4 Phylogenetic supertree including all major triclad groups after Sluys et al 2009 1 Tricladida MaricolaCavernicolaContinenticola Planarioidea PlanariidaeKenkiidaeDendrocoelidaeGeoplanoidea DugesiidaeGeoplanidae Phylogenetic subtree including five dugesiid genera after Alvarez Presas et al 2008 4 Dugesiidae GirardiaNeppiaCuraSchmidteaDugesiaReferences edit a b Sluys R Kawakatsu M Riutort M Baguna J 2009 A new higher classification of planarian flatworms Platyhelminthes Tricladida Journal of Natural History 43 29 30 1763 1777 doi 10 1080 00222930902741669 Sluys R Sola E Gritzalis K Vila Farre M Mateos E Riutort M 2013 Integrative delineation of species of Mediterranean freshwater planarians Platyhelminthes Tricladida Dugesiidae Zoological Journal of the Linnean Society 169 3 523 doi 10 1111 zoj 12077 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 a b c Alvarez Presas M Baguna J Riutort M 2008 Molecular phylogeny of land and freshwater planarians Tricladida Platyhelminthes From freshwater to land and back Molecular Phylogenetics and Evolution 47 2 555 568 doi 10 1016 j ympev 2008 01 032 PMID 18359250 Vries Elizabeth J Sluys Ronald 1991 Phylogenetic relationships of the genus Dugesia Platyhelminthes Tricladida Paludicola Journal of Zoology 223 1 103 116 doi 10 1111 j 1469 7998 1991 tb04752 x ISSN 0952 8369 Carranza S Littlewood D T Clough K A Ruiz Trillo I Baguna J Riutort M 1998 A robust molecular phylogeny of the Tricladida Platyhelminthes Seriata with a discussion on morphological synapomorphies Proceedings of the Royal Society B Biological Sciences 265 1396 631 640 doi 10 1098 rspb 1998 0341 PMC 1689013 PMID 9881470 nbsp Data related to Dugesiidae at Wikispecies Retrieved from https en wikipedia org w index php title Dugesiidae amp oldid 1188274762, wikipedia, wiki, book, books, library,
