Phylogeography of Biomphalaria glabrata and B. pfeifferi, important intermediate hosts of Schistosoma mansoni in the New and Old World Tropics

Autor: E. M. Zanotti‐Magalhães, J.‐P. Pointier, Joanne P. Webster, H. Moné, M. H. Al‐Jaser, L. Mubila, W. L. Paraense, Mohamed A. Idris, Eric S. Loker, L. A. Magalhães, G. Coulibaly, Gerald M. Mkoji, M. J. Doenhoff, Randall J. DeJong, Wade D. Wilson, Jess A. T. Morgan, C. C. Appleton, G. Mouahid, W. Haas, Paulo Sérgio D'Andrea
Přispěvatelé: CBETM, Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2003
Předmět:
0106 biological sciences
Most recent common ancestor
Old World
Range (biology)
Molecular Sequence Data
Population Dynamics
Snails
Zoology
Biology
Subspecies
phylogeography
DNA
Mitochondrial
010603 evolutionary biology
01 natural sciences
Evolution
Molecular
host genetic diversity
03 medical and health sciences
schistosomiasis
parasitic diseases
snail
Genetics
Animals
Internal transcribed spacer
Clade
Phylogeny
Ecology
Evolution
Behavior and Systematics
DNA Primers
030304 developmental biology
Likelihood Functions
0303 health sciences
Base Sequence
Geography
Models
Genetic
Phylogenetic tree
Ecology
Genetic Variation
Schistosoma mansoni
Sequence Analysis
DNA
15. Life on land
Phylogeography
mtDNA genealogy
Latin America
Haplotypes
population structure and history
Africa
[SDE]Environmental Sciences
Zdroj: Molecular Ecology
Molecular Ecology, Wiley, 2003, 12, pp.3041-3056. ⟨10.1046/j.1365-294X.2003.01977.x⟩
ISSN: 0962-1083
1365-294X
Popis: International audience; The historical phylogeography of the two most important intermediate host species of the human blood fluke Schistosoma mansoni, B. glabrata in the New World, and B. pfeifferi in the Old World, was investigated using partial 16S and ND1 sequences from the mitochondrial genome. Nuclear sequences of an actin intron and internal transcribed spacer (ITS)-1 were also obtained, but they were uninformative for the relationships among populations. Phylogenetic analyses based on mtDNA revealed six well-differentiated clades within B. glabrata: the Greater Antilles, Venezuela and the Lesser Antilles, and four geographically overlapping Brazilian clades. Application of a Biomphalaria-specific mutation rate gives an estimate of the early Pleistocene for their divergence. The Brazilian clades were inferred to be the result of fragmentation, due possibly to climate oscillations, with subsequent range expansion producing the overlapping ranges. Within the Venezuela and Lesser Antilles clade, lineages from each of these areas were estimated to have separated approximately 740 000 years ago. Compared to B. glabrata, mitochondrial sequences of B. pfeifferi are about 4x lower in diversity, reflecting a much younger age for the species, with the most recent common ancestor of all haplotypes estimated to have existed 880 000 years ago. The oldest B. pfeifferi haplotypes occurred in southern Africa, suggesting it may have been a refugium during dry periods. A recent range expansion was inferred for eastern Africa less than 100 000 years ago. Several putative species and subspecies, B. arabica, B. gaudi, B. rhodesiensis and B. stanleyi, are shown to be undifferentiated from other B. pfeifferi populations.
Databáze: OpenAIRE
Externí odkaz: