Origin and evolution of African Polystoma (Monogenea: Polystomatidae) assessed by molecular methods

International Journal for Parasitology
S BentzO Verneau

Abstract

Among Polystomatidae (Monogenea), the genus Polystoma, which mainly infests neobatrachian hosts, is the most diverse and occurs principally in Africa, from where half the species have been reported. Previous molecular phylogenetic studies have shown that this genus originated in South America, and later colonised Eurasia and Africa. No mention was made on dispersal corridors between Europe and Africa or of the origin of the African Polystoma radiation. Therefore, a molecular phylogeny was inferred from ITS1 sequences of 21 taxa comprising two species from America, seven representatives from Europe and 12 from Africa. The topology of the phylogenetic tree reveals that a single event of colonisation took place from Europe to Africa and that the putative host carrying along the ancestral polystome is to be found among ancestral pelobatids. Percentage divergences estimates suggest that some presumably distinct vesicular species in unrelated South African anurans and some neotenic forms found in several distinct hosts in Ivory Coast, could, in fact, belong to two single polystome species parasitising divergent hosts. Two main factors are identified that may explain the diversity of African polystomes: (i), we propose that following ...Continue Reading

References

Apr 1, 1983·Parasitology·R C Tinsley
Nov 11, 1993·Nucleic Acids Research·H Philippe
Jun 1, 1997·Molecular Biology and Evolution·O VerneauF Catzeflis
Apr 11, 1986·Science·M J Ryan

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Citations

Feb 12, 2002·International Journal for Parasitology·P D Olson, D T J Littlewood
Feb 14, 2003·Evolution; International Journal of Organic Evolution·Yves DesdevisesPierre Legendre
Dec 19, 2013·BioMed Research International·Andrea SimkováSerge Morand
Jun 24, 2004·Evolution; International Journal of Organic Evolution·Andrea SimkováOlivier Verneau
Oct 5, 2013·Parasitology International·Pauline BerthierOlivier Verneau
Aug 23, 2011·Systematic Biology·Mathieu BadetsOlivier Verneau
Apr 27, 2021·International Journal for Parasitology. Parasites and Wildlife·Willem LandmanLouis du Preez

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