Standley, Claire J, Prepelitchi, Lucila, Pietrokovsky, Silvia M, Issia, Laura, Stothard, Russell ORCID: https://orcid.org/0000-0002-9370-3420 and Wisnivesky-Colli, Cristina (2013) 'Molecular characterization of cryptic and sympatric lymnaeid species from the Galba/Fossaria group in Mendoza Province, Northern Patagonia, Argentina'. Parasites & Vectors, Vol 6, e304.
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Abstract
Background
Freshwater lymnaeid snails can act as the intermediate hosts for trematode parasites such as the liver fluke Fasciola hepatica, that cause significant economic and biomedical burden worldwide, particularly through bovine fascioliasis. Transmission potential is tightly coupled to local compatibility with snail hosts, so accurate identification of lymnaeid species is crucial for understanding disease risk, especially when invasive species are encountered. Mendoza Province, in Argentina, is a center of livestock production and also an area of endemic fascioliasis transmission. However, the distribution of lymnaeid species in the region is not well known.
Methods
This study examined lymnaeid snails from seven localities in the Department of Malarguë, Mendoza Province, using morphological and molecular analyses and also describing ecological variables associated with snail presence.
Results
While morphological characters identified two species of lymnaeid, Galba truncatula and G. viatrix, molecular data revealed a third, cryptic species, G. neotropica, which was sympatric with G. viatrix. G. truncatula was exclusively found in high altitude (>1900 meters above sea level [masl]) sites, whereas mixed G. neotropica/G. viatrix localities were at middle elevations (1300–1900 masl), and G. viatrix was found alone at the lowest altitude sites (<1300 masl). Phylogenetic analysis using two mitochondrial markers revealed G. neotropica and G. viatrix to be closely related, and given their morphological similarities, their validities as separate taxonomic entities should be questioned.
Conclusions
This study highlights the need of a robust taxonomic framework for the identification of lymnaeid snails, incorporating molecular, morphological and ecological variables while avoiding nomenclature redundancy. As the three species observed here, including one alien invasive species, are considered hosts of varying susceptibility to Fasciola parasites, and given the economic importance of fascioliasis for livestock production, this research has critical importance for the ultimate aim of controlling disease transmission.
Item Type: | Article |
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Additional Information: | The electronic version of this article is the complete one and can be found online at: http://www.parasitesandvectors.com/content/6/1/304 |
Subjects: | QU Biochemistry > Genetics > QU 470 Genetic structures QX Parasitology > QX 15 Classification. Terminology QX Parasitology > Helminths. Annelida > QX 365 Fasciola QX Parasitology > Insects. Other Parasites > QX 675 Mollusca WC Communicable Diseases > Tropical and Parasitic Diseases > WC 805 Trematode infections (General) |
Faculty: Department: | Biological Sciences > Department of Tropical Disease Biology |
Digital Object Identifer (DOI): | https://doi.org/10.1186/1756-3305-6-304 |
Depositing User: | Lynn Roberts-Maloney |
Date Deposited: | 12 Mar 2015 11:46 |
Last Modified: | 02 Dec 2019 12:52 |
URI: | https://archive.lstmed.ac.uk/id/eprint/5008 |
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