Search results for "sex ratio distortion"

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Infection by a vertically-transmitted microsporidian parasite is associated with a female-biased sex ratio and survival advantage in the amphipod Gam…

2007

SUMMARYVertically transmitted parasites may have positive, neutral or negative effects on host fitness, and are also predicted to exhibit sex-specific virulence to increase the proportion or fitness of the transmitting sex. We investigated these predictions in a study on the survival and sex ratio of offspring of the amphipod Gammarus roeseli from females infected by the vertically transmitted microsporidia Nosema granulosis. We found, to our knowledge, the first evidence for a positive relationship between N. granulosis infection and host survival. Infection was associated with sex ratio distortion, not by male-killing, but probably by parasite-induced feminization of putative G. roeseli m…

Male[ SDV.MP.PAR ] Life Sciences [q-bio]/Microbiology and Parasitology/ParasitologyAmphipodaZoologysurvivalHost-Parasite InteractionsNosemaGammarus roeseliGammarus[ SDV.EE.IEO ] Life Sciences [q-bio]/Ecology environment/SymbiosisAnimalsParasite hostingAmphipodaSex RatioReproductive systembiologyEcologyHost (biology)biology.organism_classificationSurvival Analysissex ratio distortionInfectious DiseasesMicrosporidiamicrosporidiavertical transmissionFemaleAnimal Science and ZoologyParasitologycrustaceanamphipodSex ratioParasitology

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