Search results for "immune defences"

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Variation and covariation in infectivity, virulence and immunodepression in the host-parasite association Gammarus pulex-Pomphorhynchus laevis.

2009

Parasites often manipulate host immunity for their own benefit, either by exacerbating or suppressing the immune response and this may directly affect the expression of parasite virulence. However, genetic variation in immunodepression, which is a prerequisite to its evolution, and the relationship between immunodepression and virulence, have rarely been studied. Here, we investigated the variation among sibships of the acanthocephalan parasite, Pomphorhynchus laevis , in infecting and in immunodepressing its amphipod host, Gammarus pulex . We also assessed the covariation between infectivity, parasite-induced immune depression and host mortality (parasite virulence). We found that infecti…

0106 biological sciencesVirulencephenoloxidaseparasite-induced immunodepression[ SDV.IMM.IA ] Life Sciences [q-bio]/Immunology/Adaptive immunology010603 evolutionary biology01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyMicrobiologyAcanthocephalaHost-Parasite Interactions03 medical and health sciencesImmune systemRiversImmunityResearch articlesImmune Tolerance[ SDV.EE.IEO ] Life Sciences [q-bio]/Ecology environment/SymbiosisParasite hostingAnimalsAmphipoda030304 developmental biologyGeneral Environmental ScienceInfectivity0303 health sciences[ SDE.BE ] Environmental Sciences/Biodiversity and EcologyGeneral Immunology and MicrobiologybiologycovariationHost (biology)Monophenol MonooxygenaseGeneral Medicinebiology.organism_classificationSurvival Analysis3. Good healthacanthocephalanvirulenceGammarus pulex[SDV.IMM.IA]Life Sciences [q-bio]/Immunology/Adaptive immunologyImmunologyimmune defencesPomphorhynchus laevisFrance[SDE.BE]Environmental Sciences/Biodiversity and EcologyGeneral Agricultural and Biological Sciences[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis
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