Journal of Helminthology

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Review Article

Biological invasions: the case of planorbid snails


J.P. Pointiera1 c1, P. Davida2 and P. Jarnea2



a1 Laboratoire de Biologie Marine et Malacologie, EPHE, CNRS UMR5555, Université, 52 Avenue Paul Alduy, 66860 Perpignan, France

a2 CEFE, UMR 5175 CNRS, 1919 route de Mende, 34293 Montpellier cedex 5, France

Article author query

Pointier JP [PubMed]  [Google Scholar]
David P [PubMed]  [Google Scholar]
Jarne P [PubMed]  [Google Scholar]

Abstract

A large number of planorbid snails are now commonly transported by man mainly through the aquatic plant trade. However, only a restricted number of species establish viable populations in a new habitat and a more restricted number spread. Only five planorbid species can be ranked in this last category and can be considered as pests because of their role in the transmission of parasites to humans or domestic animals: Biomphalaria glabrata, B. straminea, B. tenagophila, B. pfeifferi and Indoplanorbis exustus. The neotropical B. glabrata, B. straminea and B. tenagophila have proven their capacity to invade another continent sometimes creating new transmission foci. The African B. pfeifferi and the Indian I. exustus have also expanded their distribution area with long-distance dispersal. Other planorbid species, i.e. Helisoma duryi, Amerianna carinata and Gyraulus spp. have been able to establish viable populations, but not to spread, presumably because they are limited to specific habitats or/and display poor competitive abilities.

(Accepted April 18 2005)

Correspondence:

c1 Fax: +33 4 68 66 20 55, E-mail: pointier@univ-perp.fr