6533b7dcfe1ef96bd1272bea
RESEARCH PRODUCT
Identifying a key host in an acanthocephalan-amphipod system.
Alexandre BauerThierry Rigaudsubject
Male0106 biological sciences[ SDV.MP.PAR ] Life Sciences [q-bio]/Microbiology and Parasitology/ParasitologyGenotypeprevalenceCyprinidaeBiology010603 evolutionary biology01 natural scienceshost qualityAcanthocephalaHost-Parasite InteractionsPredationFish DiseasesRandom Allocation03 medical and health sciencesRiversGammarus roeseli[ SDV.EE.IEO ] Life Sciences [q-bio]/Ecology environment/SymbiosisAnimalsParasite hostinghost specificityAmphipoda[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/ParasitologyParasite transmissionMulti-host parasites030304 developmental biologyInfectivity0303 health sciences[ SDE.BE ] Environmental Sciences/Biodiversity and EcologyEcologyinfectivitytransmissionGenetic Variationbiology.organism_classificationCrustaceanLogistic ModelsPhenotypeInfectious DiseasesSympatric speciationPredatory BehaviorFemaleAnimal Science and ZoologyParasitologyPomphorhynchus laevisHelminthiasis Animal[SDE.BE]Environmental Sciences/Biodiversity and Ecology[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosisdescription
SUMMARYTrophically transmitted parasites may use multiple intermediate hosts, some of which may be ‘key-hosts’, i.e. contributing significantly more to the completion of the parasite life cycle, while others may be ‘sink hosts’ with a poor contribution to parasite transmission. Gammarus fossarum and Gammarus roeseli are sympatric crustaceans used as intermediate hosts by the acanthocephalan Pomphorhynchus laevis. Gammarus roeseli suffers higher field prevalence and is less sensitive to parasite behavioural manipulation and to predation by definitive hosts. However, no data are available on between-host differences in susceptibility to P. laevis infection, making it difficult to untangle the relative contributions of these hosts to parasite transmission. Based on results from estimates of prevalence in gammarids exposed or protected from predation and laboratory infections, G. fossarum specimens were found to be more susceptible to P. laevis infection. As it is more susceptible to both parasite infection and manipulation, G. fossarum is therefore a key host for P. laevis transmission.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-11-01 |