Divergence between sea urchins and their microbiota following speciation

Animals have a deep evolutionary relationship with microbial symbionts, such that individual microbes or an entire microbial community can diverge alongside the host. Here, we explore these host-microbe relationships in Echinometra, a sea urchin genus that speciated with the Isthmus of Panama and throughout the Indo-West Pacific. We find that the eggs from five Echinometra species generally associate with a species-specific bacterial community and that the relatedness of these communities is largely congruent with host phylogeny. Microbiome divergence per million years was higher in more recent speciation events than in older ones. We, however, did not find any bacterial groups that displayed co-phylogeny with Echinometra. Together, these findings suggest that the evolutionary relationship between Echinometra and their microbiota operates at the community level. We find no evidence suggesting that the associated microbiota is the evolutionary driver of Echinometra speciation. Instead, d..., , , # Divergence between sea urchins and their microbiota following speciation

DOI: 10.5061/dryad.dz08kps3d

The data included here are of the sea urchins Echinometra sp. A and Echinometra sp. B (E. mathaei senso stricto) (i.e., those from Japan). Data for the species from Panama (E. lucunter, E. viridis, and E. vanbrunti) can be found at: doi.org/10.5061/dryad.2z34tmphq ([https://datadryad.org/stash/dataset/doi:10.5061/dryad.2z34tmphq](https://datadryad.org/stash/dataset/doi:10.5061/dryad.2z34tmphq))

## Description of the data and file structure

DNA_JAP_S181_L001_R1_001.fastq.gz DNA blank from extraction kit, forward
DNA_JAP_S181_L001_R2_001.fastq.gz DNA blank from extraction kit, reverse
EcA1_JAP_S34_L001_R1_001.fastq.gz Eggs from Echinometra sp A, forward
EcA1_JAP_S34_L001_R2_001.fastq.gz Eggs from Echinometra sp A, reverse
EcA2_JAP_S35_L001_R1_001.fastq.gz Eggs from Echinometra sp A, forward
EcA2_JAP_S35_L001_R2_001.fastq.gz Eggs from Echinometra sp A, reverse
EcA3_JAP_S36_L001...,