Fig. 2

Geographic distribution of sampling locations in 62 helminth metabarcoding studies published from 2014 to 2023. The pins represent the locations of sample sites utilized in studies, with the dark-red pins showing exact locations and the light-red pins showing approximated latitude/longitude coordinates. Blue shading (from light to dark) represents the number of studies conducted per country (see scale at bottom left of figure). The map was created with ArcGIS Pro version 3.0.3 (ESRI, Redlands, CA, USA)