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 Palaearctic distribution.[2]
Phylogeny
Correa et al. (2010) have confirmed that placement of these species in the genus Radix reflect phylogenetic relationship.[3] A cladogram showing phylogenic relations of species in the genus Radix:[3]
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Radix sp. from Philippines
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Radix sp. from Canada and Radix sp. from Romania
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Haploid number of chromosomes of all species in the genus Radix is 17 (n=17).[3]
Species
The taxonomic status of certain species the genus Radix is disputed. Remigio (2002) reported sequence divergence within 16S mitochondrial gene of Radix peregra and Radix ovata.[4] Furthermore, the shell morphology and alloenzyme data indicated that Radix peregra and Radix ovata are distinct.[5][6]
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.[7]
- Radix ampla (Hartmann, 1821)
- Radix auricularia (Linnaeus, 1758) - type species
- Radix jordii Altaba, 2007
- Radix lilli Glöer & Beckmann, 2007[8]
- Radix linae Altaba, 2007
- Radix lagotis (Schrank, 1803)
- Radix natalensis (Krauss, 1848)[3]
- Radix ovata (Draparnaud, 1805) = Radix balthica (Linnaeus, 1758)
- Radix peregra (O. F. Müller, 1774) = Radix labiata (Rossmässler, 1835)
- Radix pinteri Schütt, 1974
- Radix relicta Polinski, 1929
- Radix rubiginosa (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:
References
- ^ Montfort D. de 1810. Conchyliologie systématique, et classification méthodique des coquilles; offrant leurs figures, leur arrangement générique, leurs descriptions caractéristiques, leurs noms; ainsi que leur synonymie en plusieurs langues. Ouvrage destiné à faciliter l'étude des coquilles, ainsi que leur disposition dans les cabinets d'histoire naturelle. Coquilles univalves, non cloisonnées. Tome second. pp. [1-3], 1-676. Paris. (Schoell).
- ^ Pfenninger M., Cordellier M. & Streit B. (2006). "Comparing the efficacy of morphologic and DNA-based taxonomy in the freshwater gastropod genus Radix (Basommatophora, Pulmonata)". BMC Evolutionary Biology 6: 100. doi:10.1186/1471-2148-6-100.
- ^ a b c d Correa C. A., Escobar J. S., Durand P., Renaud F., David P., Jarne P., Pointier J.-P. & Hurtrez-Boussès S. (2010). "Bridging gaps in the molecular phylogeny of the Lymnaeidae (Gastropoda: Pulmonata), vectors of Fascioliasis". BMC Evolutionary Biology 10: 381. doi:10.1186/1471-2148-10-381.
- ^ Remigio E. A. (2002). "Molecular phylogenetic relationships in the aquatic snail genus Lymnaea, the intermediate host of the causative agent of fascioliasis: insights from broader taxon sampling". Parasitology Research 88: 687–696. PubMed, doi:10.1007/s00436-002-0658-8.
- ^ Glöer P., Meier-Brook C., Osterman O. (1987). Süsswassermollusken: ein Bestimmungsschlüssel für die Bundesrepublik Deutschland. Deutscher Jugendbund für Naturbeobachtung, Hamburg.
- ^ Ward P. I., Goater C. P., Mikos M. (1997). "Shell variation in sympatric freshwater Lymnaea peregra and Lymnaea ovata (Gastropoda; Lymnaeidae)". Biological Journal of the Linnean Society 61(1): 139–149. doi:10.1111/j.1095-8312.1997.tb01782.x.
- ^ Bargues M. D., Vigo M., Horák P., Dvořák J., Patzner R. A., Pointier J. P., Jackiewicz M., Meier-Brook C. & Mas-Coma S. (2001). "European Lymnaeidae (Mollusca: Gastropoda), intermediate hosts of trematodiases, based on nuclear ribosomal DNA ITS-2 sequences". Infection, Genetics and Evolution 1(2): 85–107. PubMed, doi:10.1016/S1567-1348(01)00019-3.
- ^ Glöer 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., ISBN 978-3-939767-05-3.
External links