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. 2023 Jun 21;18(6):e0286808. doi: 10.1371/journal.pone.0286808

Table 1. Description, rationale, and data source for variables assessed in univariable analysis and multivariable model building as predictors of Toxoplasma gondii oocyst shedding in free-ranging felids.

Variable Type Rationale Available data Data source(s)
Temperature Differences in temperature may alter oocyst survival [28] Annual mean temperature
Mean diurnal temperature range (D)
Isothermality
Temperature seasonality
Max temperature of warmest month
Min temperature of coldest month
Temperature annual range
Mean temperature of wettest quarter
Mean temperature of coldest quarter
Mean temperature of driest quarter (W)
Mean temperature of wettest quarter
WorldClim [26]
Precipitation Precipitation can affect oocyst survival and transport [2931] Annual precipitation
Precipitation of wettest month
Precipitation of driest month
Precipitation seasonality
Precipitation of wettest quarter
Precipitation of driest quarter
Precipitation of warmest quarter
Precipitation of coldest quarter
Vapor pressure
WorldClim [26]
Human activity Anthropogenic activities and human presence can alter landscapes in ways that lead to changes in domestic and wild felid population size and density, and diversity of intermediate hosts. IUCN habitat type
Species richness
Human population density (D/W)
Human footprint
IUCN [28], NASA CIESIN Gridded Population of the World (GPW) v4 [27]

Variables included in final multivariable models for domestic (D) and wild (W) felids are bolded for emphasis.