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 [29–31] | 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.