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Radix (genus)
Encyclopedia
Radix is a genus
of air-breathing freshwater snail
s, aquatic
pulmonate gastropods in the family
Lymnaeidae
, the pond snails.
The genus Radix has Palaearctic distribution.
showing phylogenic relations of species in the genus Radix:
Haploid number of chromosomes of all species in the genus Radix is 17 (n=17).
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 R. peregra, R. ovata, and R. balthica as a conspecific species.
Or instead perhaps:
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of air-breathing freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....
s, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
pulmonate gastropods in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Lymnaeidae
Lymnaeidae
Lymnaeidae is a taxonomic family of small to large air-breathing freshwater snails, aquatic pulmonate gastropod mollusks, that belong to the clade Hygrophila....
, the pond snails.
The genus Radix has Palaearctic distribution.
Phylogeny
Correa et al. (2010) have confirmed that placement of these species in the genus Radix reflect phylogenetic relationship. A cladogramCladogram
A cladogram is a diagram used in cladistics which shows ancestral relations between organisms, to represent the evolutionary tree of life. Although traditionally such cladograms were generated largely on the basis of morphological characters, DNA and RNA sequencing data and computational...
showing phylogenic relations of species in the genus Radix:
Haploid number of chromosomes of all species in the genus Radix is 17 (n=17).
Species
The taxonomic status of certain species the genus Radix is disputed. Remigio (2002) reported sequence divergence within 16S mitochondrial gene of Radix peregraRadix peregra
Radix peregra, previously known as Lymnaea peregra or Lymnaea pereger, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Lymnaeidae, the pond snails....
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
Internal transcribed spacer
ITS refers to a piece of non-functional RNA situated between structural ribosomal RNAs on a common precursor transcript. Read from 5' to 3', this polycistronic rRNA precursor transcript contains the 5' external transcribed sequence , 18S rRNA, ITS1, 5.8S rRNA, ITS2, 28S rRNA and finally the 3'ETS...
-2 sequence analysis R. peregra, R. ovata, and R. balthica as a conspecific species.
- Radix amplaRadix amplaRadix ampla is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails.- Distribution :This species is found in European countries including:* Czech Republic* Germany* Poland...
(Hartmann, 1821) - Radix auriculariaRadix auriculariaRadix auricularia, common name the big-ear radix, is a species of medium-sized freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.Radix auricularia is the type species of the genus Radix.-Forms:...
(Linnaeus, 1758) - type speciesType speciesIn biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
- Radix auricularia japonica Jay, 1857 - at Japanese wikipedia
- Radix jordiiRadix jordiiRadix jordii is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails....
Altaba, 2007 - Radix lilli Glöer & Beckmann, 2007
- Radix linaeRadix linaeRadix linae is a species of freshwater snail, a gastropod mollusk in the family Lymnaeidae....
Altaba, 2007 - Radix lagotis (Schrank, 1803)
- Radix natalensisRadix natalensisRadix natalensis is a species of freshwater snail, an aquatic gastropod mollusc in the family Lymnaeidae.It is widely distributed in Africa. It is a major intermediate host for Fasciola gigantica in Africa. Placement of this species in the genus Radix was confirmed by Correa et al...
(Krauss, 1848) - Radix ovata (Draparnaud, 1805) = Radix balthicaRadix balthicaRadix balthica is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails.- Distribution :This species is found in European countries and islands including:* Czech Republic* Germany...
(Linnaeus, 1758) - Radix peregraRadix peregraRadix peregra, previously known as Lymnaea peregra or Lymnaea pereger, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Lymnaeidae, the pond snails....
(O. F. Müller, 1774) = Radix labiata (Rossmässler, 1835) - Radix pinteri Schütt, 1974
- Radix relicta Polinski, 1929
- Radix rubiginosaRadix rubiginosaRadix rubiginosa is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Lymnaeidae, the pond snails.This species is sometimes treated as a subspecies of Radix auricularia.-Distribution:...
(Michelin, 1831)
Or instead perhaps:
- R. peregra = R. ovata = R. balthica
Parasites
Species within the genus Radix are utilized as intermediate hosts by several different trematode species:- Trichobilharzia spp.
- Fasciola hepaticaFasciola hepaticaFasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic flatworm of the class Trematoda, phylum Platyhelminthes that infects the livers of various mammals, including humans. The disease caused by the fluke is called fascioliasis . F...
- Fasciola giganticaFasciola giganticaFasciola gigantica is a parasitic flatworm of the class Trematoda, which causes tropical fascioliasis. It is regarded as one of the most important single platyhelminth infections of ruminants in Asia and Africa...
- Fascioloides magnaFascioloides magnaFascioloides magna, also known as giant liver fluke, large American liver fluke or deer fluke, is an important parasite of a variety of wild and domestic ruminants in North America and Europe. Adult flukes occur in the liver of the definitive host and feed on blood...
- Plagiorchis neomidis
- Haplometra cylindracea
- EchinostomaEchinostomaEchinostoma is an important genus that includes many parasites.Human echinostomiasis is an intestinal parasitic disease caused by one of at least sixteen trematode flukes from the genus Echinostoma. Found largely in southeast Asia and the Far East, mainly in cosmopolitan areas. It has extensive...
spp.