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Population genetic structure of Schistosoma bovis in Cameroon ArchiMer
Djuikwo-teukeng, Felicite Flore; Simo, Alain Kouam; Allienne, Jean-francois; Rey, Olivier; Ngapagna, Arouna Njayou; Tchuem-tchuente, Louis Albert; Boissier, Jerome.
BackgroundSchistosomiasis is neglected tropical parasitic disease affecting both humans and animals. Due to the human health impact, population genetic studies have focused on the three main human-infecting schistosome species: Schistosoma mansoni, S. haematobium and S. japonicum. Here we present novel data on the population genetic structure of Schistosoma bovis, a highly widespread and prevalent schistosome infecting ruminants, and therefore of veterinary importance.MethodsAdult S. bovis were sampled in the two main abattoirs of Cameroon (Yaounde and Douala). Twenty-two cows originating from four distinct localities were sampled and a total of 218 parasites were recovered. All parasites were genotyped using a panel of 14 microsatellite markers and a...
Tipo: Text Palavras-chave: Schistosoma bovis; Barcoding; Population genetic structure.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00481/59267/62448.pdf
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Sympatric versus allopatric evolutionary contexts shape differential immune response in Biomphalaria / Schistosoma interaction ArchiMer
Portet, Anais; Pinaud, Silvain; Chaparro, Cristian; Galinier, Richard; Dheilly, Nolwenn M.; Portela, Julien; Charriere, Guillaume; Allienne, Jean-francois; Duval, David; Gourbal, Benjamin.
Selective pressures between hosts and their parasites can result in reciprocal evolution or adaptation of specific life history traits. Local adaptation of resident hosts and parasites should lead to increase parasite infectivity/virulence (higher compatibility) when infecting hosts from the same location (in sympatry) than from a foreign location (in allopatry). Analysis of geographic variations in compatibility phenotypes is the most common proxy used to infer local adaptation. However, in some cases, allopatric host-parasite systems demonstrate similar or greater compatibility than in sympatry. In such cases, the potential for local adaptation remains unclear. Here, we study the interaction between Schistosoma and its vector snail Biomphalaria in which...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00488/59982/63214.pdf
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