Journal ArticleDOI
A molecular phylogenetic analysis of Bulinus (Gastropoda: Planorbidae) with conserved nuclear genes
Aslak Jørgensen,Henry Madsen,Allen Nalugwa,Silvester Nyakaana,David Rollinson,J. Russell Stothard,Thomas K. Kristensen +6 more
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A molecular phylogenetic analysis of Bulinus (Gastropoda: Planorbidae) with conserved nuclear genes shows that it is likely that the Bulinus of today is descended from a single ancestor that lived in what is now Europe.Abstract:
Jorgensen, A., Madsen, H., Nalugwa, A., Nyakaana, S., Rollinson, D., Stothard, J. R. & Kristensen, T. K. A molecular phylogenetic analysis of Bulinus (Gastropoda: Planorbidae) with conserved nuclear genes. —Zoologica Scripta, 40, 126–136.
Mutational saturation of inspected DNA loci and topological incongruence in the phylogenetic inferences have previously confounded attempts to resolve the evolutionary relationships within the freshwater snail genus Bulinus. Traditionally, the 37 species of Bulinus are placed within the four species groups and the evolutionary divergence between groups is substantial. With an intention to shed new light on species group relationships, the present study was designed to investigate the basal divergences in the phylogeny of Bulinus using highly conserved nuclear genes. The resolved phylogeny inferred that the four species groups of Bulinus were monophyletic and Shimodaira-Hasegawa topology tests found them to be significantly supported. The Bulinus truncatus/tropicus species complex and Bulinus wrighti (Bulinus reticulatus group) formed a well-supported sister-group relationship. The Bulinus africanus species group was the sister-group to the clade (Bulinus truncatus/tropicus + B. wrighti) with the Bulinus forskalii species group as the sister-group to these taxa. The sister-group relationship between Indoplanorbis and Bulinus was non-significant and the basal clade support of Bulinus improved upon exclusion of Indoplanorbis. The finding of basal long branches of Bulinus species originating from Madagascar strongly suggests the presence of additional cryptic species and an evolutionary scenario influenced by this island’s geological vicariance from the African mainland. Speciation by polyploidy was inferred to have evolved within a clade in the Bulinus truncatus/tropicus species complex. Although the monophyletic status of each species group was firmly supported, it was difficult to establish species group concepts equally across the variations and place this precisely in a specific temporal framework.read more
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A molecular phylogeny of apple snails (Gastropoda: Caenogastropoda: Ampullariidae) with emphasis on the African species
TL;DR: Ampullariids are widespread in Africa, Asia, South- and Central America, and the Caribbean Islands as mentioned in this paper, and they have been used as outgroups in the present investigation on ampullariid phylogeny.
Journal Article
Phylogeny of seven Bulinus species originating from endemic areas in three African countries, in relation to the human blood fluke Schistosoma haematobium
Rima Zein-Eddine,Felicite Flore Djuikwo-Teukeng,Mustafa Al-Jawhari,Bruno Senghor,Tine Huyse,Gilles Dreyfuss +5 more
TL;DR: Interesting patterns emerge regarding schistosome susceptibility: Bulinus species with lower genetic diversity are predicted to have higher infection prevalence than those with greater diversity in host susceptibility.
Journal ArticleDOI
The Schistosoma indicum species group in Nepal: presence of a new lineage of schistosome and use of the Indoplanorbis exustus species complex of snail hosts.
TL;DR: High support is found for a close relationship between S. indicum and Schistosoma haematobium groups, but failed to retrieve support for a clean separation of the two, with a tendency for S. nasale to fall as the most basal representative.
Journal ArticleDOI
Phylogeny of seven Bulinus species originating from endemic areas in three African countries, in relation to the human blood fluke Schistosoma haematobium
Rima Zein-Eddine,Felicite Flore Djuikwo-Teukeng,Mustafa Al-Jawhari,Bruno Senghor,Tine Huyse,Gilles Dreyfuss +5 more
TL;DR: In this article, the haplotype diversity and phylogeny of seven Bulinus species originating from three endemic countries in Africa (Cameroon, Senegal and Egypt) were investigated using the partial mitochondrial cytochrome oxidase subunit I (cox1) gene, and the nuclear ribosomal ITS, 18S and 28S genes.
Journal ArticleDOI
DNA multigene sequencing of topotypic specimens of the fascioliasis vector Lymnaea diaphana and phylogenetic analysis of the genus Pectinidens (Gastropoda)
TL;DR: Phylogeny and large genetic distances support the genus Pectinidens as the first stagnicoline representative in the southern hemisphere, including colonization of extreme world regions, as most southern Patagonia, long time ago.
References
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Journal ArticleDOI
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DnaSP v5
Pablo Librado,Julio Rozas +1 more
TL;DR: Version 5 implements a number of new features and analytical methods allowing extensive DNA polymorphism analyses on large datasets, including visualizing sliding window results integrated with available genome annotations in the UCSC browser.
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