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Inferring patterns of folktale diffusion using genomic data.

Eugenio Bortolini1,2,3, Luca Pagani4,5, Enrico R Crema6

  • 1Complexity and Socio-Ecological Dynamics Research Group, Department of Archaeology and Anthropology, Institución Milá y Fontanals, Spanish National Research Council (CSIC), 08001 Barcelona, Spain; eugenio.bortolini2@unibo.it jamie.tehrani@durham.ac.uk.

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Summary
This summary is machine-generated.

Gene-culture coevolution is influenced by population movements and linguistic barriers. Analyzing folktales and genomes reveals that language differences, not just distance, shape cultural diversity and transmission patterns.

Keywords:
Eurasiacultural diffusiondemic diffusionfolktaleswhole-genome sequences

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Area of Science:

  • Anthropology
  • Genetics
  • Computational Linguistics

Background:

  • Cultural variation is linked to population movements, diffusion, and ecological adaptation.
  • Gene-culture coevolution studies focus on trait frequency, cultural spread, and genetic-cultural lineage relationships.

Purpose of the Study:

  • To assess the impact of population movement and replacement on cultural diversity using Eurasian folktales and whole-genome sequences.
  • To investigate the role of ethnolinguistic barriers in cultural and genetic information transmission.

Main Methods:

  • Utilized worldwide whole-genome sequences and a dataset of 596 Eurasian folktales.
  • Developed an empirical approach to infer ethnolinguistic barriers and their impact on transmission.
  • Compared isolation-by-distance models with models incorporating linguistic biases.

Main Results:

  • Isolation-by-distance alone cannot fully explain cultural diffusion patterns, especially at smaller spatial scales.
  • Ethnolinguistic barriers significantly influence the transmission of both genetic and cultural information.
  • Cultural diffusion biased by linguistic differences provides the most plausible model for observed folktale diversity.

Conclusions:

  • Population movement and replacement significantly impact cultural diversity.
  • Linguistic differences act as a crucial factor, alongside population dynamics, in shaping cultural transmission.
  • Identified specific folktales likely spread via population movement and pinpointed potential origin areas for globally distributed tales.