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    No barrier breakdown between human and cattle schistosome species in the Senegal River Basin in the face of hybridisation

    Authors
    Boon, N.
    Mbow, M.
    Paredis, L.
    Moris, P.
    Sy, I.
    Maes, T.
    Webster, B.
    Sacko, M.
    Volckaert, F.
    Polman, K.
    Huyse, T.
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    Discipline
    Biological sciences
    Subject
    Invertebrates
    Audience
    Scientific
    Date
    2019
    Metadata
    Show full item record
    Description
    Schistosomiasis is widely distributed along the Senegal River Basin (SRB), affecting both the human population and their livestock. Damming of the Senegal River for irrigation purposes in the 1980s induced ecological changes that resulted in a large outbreak of Schistosoma mansoni, followed a few years later by an increase and spread of Schistosoma haematobium infections. The presence of hybrid crosses between the human and cattle schistosomes, S. haematobium and Schistosoma bovis, respectively, is adding complexity to the disease epidemiology in this area, and questions the strength of the species boundary between these two species. This study aimed to investigate the epidemiology of S. haematobium, S. bovis and their hybrids along the Senegal River basin using both microsatellite genetic markers and analysis of mitochondrial and nuclear DNA markers. Human schistosome populations with a S. haematobium cox1 mtDNA profile and those with a S. bovis cox1 mtDNA profile (the so-called hybrids) appear to belong to a single randomly mating population, strongly differentiated from the pure S. bovis found in cattle. These results suggest that, in northern Senegal, a strong species boundary persists between human and cattle schistosome species and there is no prolific admixing of the populations. In addition, we found that in the SRB S. haematobium was spatially more differentiated in comparison to S. mansoni. This may be related either to the presence and susceptibility of the intermediate snail hosts, or to the colonisation history of the parasite. (C) 2019 Published by Elsevier Ltd on behalf of Australian Society for Parasitology.
    Citation
    Boon, N.; Mbow, M.; Paredis, L.; Moris, P.; Sy, I.; Maes, T.; Webster, B.; Sacko, M.; Volckaert, F.; Polman, K.; Huyse, T. (2019). No barrier breakdown between human and cattle schistosome species in the Senegal River Basin in the face of hybridisation. , INTERNATIONAL JOURNAL FOR PARASITOLOGY, Vol. 49, 1039-1048, DOI: 10.1016/j.ijpara.2019.08.004.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/12416
    doi: http://dx.doi.org/10.1016/j.ijpara.2019.08.004
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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