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Radix (gastropod)

Radix is a genus of air-breathing freshwater snails, aquatic pulmonate gastropods in the family Lymnaeidae, the pond snails.

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.

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.

Or instead perhaps:

  • R. peregra = R. ovata = R. balthica
Taxa inquirenda:
  • Radix middendorffi <small>(W. Dybowski, 1903)</small>
Species brought into synonymy:
  • Radix (Radix) dupuyana <small>(Noulet, 1854)</small>: synonym of † Galba dupuyiana <small>(Noulet, 1854)</small>
  • † Radix (Radix) hyaloleuca <small>(Brusina, 1902)</small>: synonym of † Radix korlevici <small>(Brusina, 1884)</small>
  • † Radix (Radix) limosa <small>(Linnaeus, 1758)</small>: synonym of Radix balthica <small>(Linnaeus, 1758)</small>
  • † Radix (Radix) peregra <small>(Müller, 1774)</small>: synonym of Radix labiata <small>(Rossmässler, 1835)</small>
  • Radix auriculatus <small>Montfort, 1810</small>: synonym of Radix auricularia <small>(Linnaeus, 1758)</small>
  • Radix altus <small>Macaleț, 2000</small>: synonym of † Radix alta <small>Macaleț, 2000</small>
  • † Radix amaradicus <small>Macaleț, 2000</small>: synonym of † Radix amaradica <small>Macaleț, 2000</small>
  • Radix deydieri <small>(Fontannes, 1878)</small>: synonym of † Radix cucuronensis <small>(Fontannes, 1878)</small>
  • † Radix hyaloleuca <small>(Brusina, 1902)</small>: synonym of † Radix korlevici <small>(Brusina, 1884)</small>
  • † Radix kuzmici <small>(Brusina, 1897)</small>: synonym of † Boskovicia kuzmici <small>Brusina, 1897</small>
  • Radix ovata (Draparnaud, 1805): synonym of Radix balthica <small>(Linnaeus, 1758)</small>
  • † Radix peregra <small>(O. F. Müller, 1774)</small>: synonym of Radix labiata <small>(Rossmässler, 1835)</small>
  • † Radix socialis <small>Macaleț, 2000</small>: synonym of † Radix macaleti <small>Neubauer, Harzhauser, Kroh, Georgopoulou & Mandic, 2014</small>

Parasites

Species within the genus Radix are utilized as intermediate hosts by several different trematode species:

References

  • Vinarski V.M. (2013) One, two, or several? How many lymnaeid genera are there? Ruthenica 23(1): 41-58.