Ancient mitogenomes from Belize shed light on Maya population mobility over three millennia

A preprint posted to bioRxiv by researchers working on ancient DNA from Belize presents mitochondrial genome data bearing on the demographic history of Maya communities across roughly three thousand years. The study draws on archaeological contexts spanning the formation and collapse of major urban centres, climatic disruptions, and successive colonial periods — events previously documented through material culture and stable-isotope evidence but less thoroughly characterised at the genomic level.

The authors report that ancient mitogenomes from Belizean sites show patterns consistent with substantial population mobility, including movements that link Maya lowland polities to Caribbean communities. The findings add genomic resolution to existing archaeological models of a demographically dynamic population whose relationships between urban centres were complex and shifting.

Because the work analyses mitochondrial DNA — maternally inherited and therefore informative about female-line ancestry — it complements but does not replace nuclear-genome approaches. The authors note that present-day Maya communities are included in comparative analyses, providing a bridge between ancient and contemporary genetic diversity.

This is a preprint and has not yet been peer-reviewed. Results and interpretations are subject to change following formal review.