test_moissonnage_selune
type: Agent

Host-parasite interactions in the Biomphalaria pfeifferi-Schistosoma mansoni model in Dhofar (Oman): population genetics of the host, life-history traits and consequence on parasite transmission
type: Distribution
access URL: https://theses.hal.science/tel-00939427
format: HTML
issued: 2026-05-07T04:34:15.060729
modified: 2026-05-07T04:34:15.038941

Host-parasite interactions in the Biomphalaria pfeifferi-Schistosoma mansoni model in Dhofar (Oman): population genetics of the host, life-history traits and consequence on parasite transmission
type: Dataset
contact point: Organization
  fn: CCSD
keyword: schistosoma-mansoni
keyword: sdeenvironmental-sciences
keyword: infoeu-reposemanticsdoctoralthesis
keyword: genetique-des-populations
keyword: host-parasite-interactions
keyword: reemergence
keyword: schistosomose-traits-dhistoire-de-vie-transmission
keyword: interactions-hote-parasite
keyword: biomphalaria-pfeifferi
keyword: dhofar-oman
keyword: theses
keyword: population-genetics
keyword: schistosomiasis-transmission
landing page: https://theses.hal.science/tel-00939427
description: This thesis has been conducted in the context of the reemergence of schistosomiasis caused by Schistosoma mansoni (flatworm trematode) in Dhofar (Oman). The work focuses on the host-parasite interactions and their implications on schistosome transmission. The first part is devoted to a spatiotemporal study of the population genetics iof Biomphalaria pfeifferi (freshwater gastropod snail). Nine microsatellite markers were used for characterization of 18 populations of B. pfeifferi. The results showed that intrapopulations genetic variability was very low. However, the population were highly differentiated. Temporal differentiation was also recorded in same populations. A second part concerns to the study of the life-history traits and host-parasite relationships. It was conducted using eight host-parasite combinations that differ either by the parasite population (human versus murine), by the waterbody category (natural versus man-made) or by the morph of the snail (pigmented versus albino). The following life-history traits were analyzed: growth, fecundity and survival of B. pfeifferi and rate of infection, prepatent period and cercarial production of S. mansoni. The results show that both the origin of S. mansoni and the pigmentation of B. pfeifferi play a major role in transmission of schistosomiasis in Dhofar. The results are discussed in terms of host-parasite compatibility
issued: 2026-05-07T04:34:15.051762
language: fr
modified: 2026-05-07T04:34:15.051768