Study Search and Screening
To identify candidate studies we performed a systematic search of the
Web of Science Core Collection using the following search string:
predat* AND (parasit* OR pathogen*). This search identified 11,417
candidate studies. Abstracts were subsequently screened to determine if
they met three strict inclusion criteria: they must have (i) involved an
animal host/prey population, a predator population that kills and
consumes the host/prey, and a parasite that is described in the study as
infecting the host/prey but NOT the predator; (ii) observed multiple
levels of predation pressure, and (iii) measured at least one relevant
parasite outcome (e.g. intensity or prevalence). Based on abstract
screening 256 studies were identified as potentially meeting these three
criteria, 50 of which were confirmed following full-text screening
(Supplementary Figure 1).