Spatial and temporal genetic variation of Echinostoma revolutum (Trematoda: Echinostomatidae) from Thailand and the Lao PDR

► We provide a significant increase in the population genetic data available on Echinostoma revolutum. ► Adult worms were recovered from domestic ducks at different geographic localities and times. ► Significant heterozygote deficiency was found in the populations/samples. ► This study will form the foundation for a better understanding of micro- and macro-evolutionary changes of E. revolutum populations in Southeast Asia.