Infection route alters the effect of host diet quality on host–parasite interactions DOI
Charlotte F. Narr,

Scott Binger,

Edward Hall

et al.

Oikos, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Linking characteristics of parasites to host diet‐induced shifts in host–parasite interactions is a critical step predicting the abundance specific within an ecosystem. A parasite's infection route reflects suite parasite that could mediate effects diet quality on interactions, but effect response has not been quantified. We quantified these for first time by experimentally manipulating capable transmitting itself via multiple pathways utilized wide variety parasites. altered phosphorus (P) content Daphnia infected mixed mode transmitter Hamiltosporidian tvaerminnensis one two routes: horizontal, ingestion spores from dead hosts, or vertical, offspring. Then, we load and virulence (i.e. fecundity survival) . Overall, found horizontal infections were more sensitive than vertical infections. Low P diets decreased all had stronger negative loads horizontally individuals vertically ones. Likewise, reduced survival hosts fed low (but high P) while did affect survival. This increased sensitivity empirically supports intuitive hypothesis exerts transmit into host's gut routes less directly related nutrient uptake. Through effects, may shape ecology evolution communities.

Language: Английский

Infection route alters the effect of host diet quality on host–parasite interactions DOI
Charlotte F. Narr,

Scott Binger,

Edward Hall

et al.

Oikos, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Linking characteristics of parasites to host diet‐induced shifts in host–parasite interactions is a critical step predicting the abundance specific within an ecosystem. A parasite's infection route reflects suite parasite that could mediate effects diet quality on interactions, but effect response has not been quantified. We quantified these for first time by experimentally manipulating capable transmitting itself via multiple pathways utilized wide variety parasites. altered phosphorus (P) content Daphnia infected mixed mode transmitter Hamiltosporidian tvaerminnensis one two routes: horizontal, ingestion spores from dead hosts, or vertical, offspring. Then, we load and virulence (i.e. fecundity survival) . Overall, found horizontal infections were more sensitive than vertical infections. Low P diets decreased all had stronger negative loads horizontally individuals vertically ones. Likewise, reduced survival hosts fed low (but high P) while did affect survival. This increased sensitivity empirically supports intuitive hypothesis exerts transmit into host's gut routes less directly related nutrient uptake. Through effects, may shape ecology evolution communities.

Language: Английский

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