Radix is a genus of air-breathing freshwater snails, aquatic pulmonate gastropods in the family Lymnaeidae, the pond snails.Bouchet, P.; Gofas, S. (2013). Radix Montfort, 1810. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=248262 on 2013-06-06
The genus Radix has a Palaearctic distribution.
Phylogeny Correa et al. (2010) confirmed that the placement of these species within the genus Radix reflected their phylogenetic relationship. A cladogram showing phylogenic relations of species in the genus Radix:
The haploid number of chromosomes of all species in the genus Radix is 17 (n=17).
Species The taxonomic status of certain species in the genus Radix has been disputed. Remigio (2002) reported sequence divergence within the 16S mitochondrial gene of Radix peregra and Radix ovata. Furthermore, the shell morphology and alloenzyme data indicated that Radix peregra and Radix ovata are distinct.Glöer P., Meier-Brook C., Osterman O. (1987). Süsswassermollusken: ein Bestimmungsschlüssel für die Bundesrepublik Deutschland. Deutscher Jugendbund für Naturbeobachtung, Hamburg.
In contrast, Bargues et al. (2001) considered, on the basis of ITS-2 sequence analysis, that R. peregra, R. ovata, and R. balthica are in fact conspecific.
† Radix (Lytostoma) grammica (Brusina, 1872) Radix acuminata (Lamarck, 1822) † Radix alta Macaleț, 2000 † Radix alutae (Jekelius, 1932) † Radix amaradica Macaleț, 2000 Radix ampla (Hartmann, 1821) Radix andersoniana (Nevill, 1881) Radix auricularia (Linnaeus, 1758) - type species Radix auricularia japonica Jay, 1857 - at Japanese Wikipedia Radix bactriana (Annandale & Prashad, 1919) † Radix balatonica (Fuchs, 1870) Radix balthica (Linnaeus, 1758) † Radix berbestiensis Macaleț, 2000 † Radix bogdanensis Macaleț, 2000 Radix brevicauda (G. B. Sowerby II, 1872) † Radix calavardensis (Bukowski, 1896) † Radix croatica (Gorjanović-Kramberger, 1890) † Radix cucuronensis (Fontannes, 1878) † Radix dilatata (Noulet, 1854) † Radix dilleri (Neumayr, 1883) † Radix enzenbachensis Neubauer & Harzhauser in Harzhauser et al., 2014 † Radix extensa (Gorjanović-Kramberger, 1890) Radix gebleri (Middendorff, 1851) Radix gedrosiana (Annandale & Prashad, 1919) Radix hordeum (Mousson, 1874) Radix hubrechti Qian, Yang & He, 2012 † Radix impressa (Sinzov, 1875) Radix iranica (Annandale & Prashad, 1919) † Radix jaksici (Brusina, 1902) Radix jordii Altaba, 2007 Radix kamtschatica (Middendorff, 1851) † Radix kobelti (Brusina, 1884) † Radix korlevici (Brusina, 1884) † Radix kurelaci (Brusina, 1902) Radix labiata (Rossmässler, 1835) † Radix laevigata (Eichwald, 1853) Radix lagotis (Schrank, 1803) † Radix lazarevici (Brusina, 1902) Radix lilli Glöer & Beckmann, 2007Glöer P. & Beckmann K.-H. (2007). "Radix lilli n. sp. und drei neue Bithynia-Arten von den Balearen (Gastropoda: Bithyniidae, Lymnaeidae). pp. 163-170. In: Beckmann K.-H.: Die Land- und Süßwassermollusken der Balearischen Inseln. ConchBooks, Hackenheim, 255 pp., . Radix linae Altaba, 2007 Radix luteola (Lamarck, 1822) † Radix lytostomopsis (Brusina, 1902) † Radix macaleti Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014 † Radix marinescui Macaleț, 2000 † Radix minutissima (Greppin, 1855) Radix namucuoensis Qian, Yang & He, 2012 Radix natalensis (Krauss, 1848) † Radix navarroi (Royo Gómez, 1922) † Radix novorossica (Sinzov, 1877) † Radix obtusissima (Deshayes, 1838) Radix ovata (Draparnaud, 1805) = Radix balthica (Linnaeus, 1758) † Radix papaianopoli Macaleț, 2000 † Radix paucispira (Fuchs, 1870) Radix peregra (O. F. Müller, 1774) = Radix labiata (Rossmässler, 1835) † Radix pergamenica (Oppenheim, 1919) Radix persica (Issel, 1865) † Radix phrygoovata (Oppenheim, 1919) Radix pinteri Schütt, 1974 † Radix plicata (Sacco, 1884) † Radix podarensis Macaleț, 2000 † Radix pseudoovata (d'Orbigny, 1852) Radix relicta Polinski, 1929 † Radix rippensis (Almera & Bofill y Poch, 1895) Radix rubiginosa (Michelin, 1831) † Radix simplex (Gorjanović-Kramberger, 1899) † Radix socialis (von Zieten, 1832) † Radix subauricularia (d'Orbigny, 1852) † Radix subinflata (d'Orbigny, 1852) † Radix sublimosa (Sinzov, 1875) † Radix subovata (von Zieten, 1832) † Radix zelli (Hörnes, 1856)
Or instead perhaps: R. peregra = R. ovata = R. balthica Taxa inquirenda Radix middendorffi (W. Dybowski, 1903) Species brought into synonymy Radix (Radix) dupuyana (Noulet, 1854): synonym of † Galba dupuyiana (Noulet, 1854) † Radix (Radix) hyaloleuca (Brusina, 1902): synonym of † Radix korlevici (Brusina, 1884) † Radix (Radix) limosa (Linnaeus, 1758): synonym of Radix balthica (Linnaeus, 1758) † Radix (Radix) peregra (Müller, 1774): synonym of Radix labiata (Rossmässler, 1835) Radix auriculatus Montfort, 1810: synonym of Radix auricularia (Linnaeus, 1758) Radix altus Macaleț, 2000: synonym of † Radix alta Macaleț, 2000 † Radix amaradicus Macaleț, 2000: synonym of † Radix amaradica Macaleț, 2000 Radix deydieri (Fontannes, 1878): synonym of † Radix cucuronensis (Fontannes, 1878) † Radix hyaloleuca (Brusina, 1902): synonym of † Radix korlevici (Brusina, 1884) † Radix kuzmici (Brusina, 1897): synonym of † Boskovicia kuzmici Brusina, 1897 Radix ovata (Draparnaud, 1805): synonym of Radix balthica (Linnaeus, 1758) † Radix peregra (O. F. Müller, 1774): synonym of Radix labiata (Rossmässler, 1835) † Radix socialis Macaleț, 2000: synonym of † Radix macaleti Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014
Parasites Species within the genus Radix are utilized as intermediate hosts by several different trematode species: Trichobilharzia spp. Fasciola hepatica Fasciola gigantica Fascioloides magna Plagiorchis neomidis Haplometra cylindracea Echinostoma spp.
References
Vinarski V.M. (2013) One, two, or several? How many lymnaeid genera are there? Ruthenica 23(1): 41-58.