10.5061/DRYAD.KH049
Leydet, Karine Posbic
Louisiana State University of Alexandria
Grupstra, Carsten G.B.
University of Amsterdam
Coma, Rafel
Centre d'Estudis Avançats de Blanes; Blanes Girona Spain
Ribes, Marta
Institut de Ciències del Mar
Hellberg, Michael E.
Louisiana State University of Alexandria
Grupstra, Carsten G. B.
University of Amsterdam
Data from: Host-targeted RAD-Seq reveals genetic changes in the coral
Oculina patagonica associated with range expansion along the Spanish
Mediterranean coast
Dryad
dataset
2018
RAD-Sequencing
Oculina patagoncia
2018-04-05T15:28:07Z
2018-04-05T15:28:07Z
en
https://doi.org/10.1111/mec.14702
65333538 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Many organisms are expanding their ranges in response to changing
environmental conditions. Understanding the patterns of genetic diversity
and adaptation along an expansion front is crucial to assessing a species’
long-term success. While next-generation sequencing techniques can reveal
these changes in fine detail, ascribing them to a particular species can
be difficult for organisms that live in close association with symbionts.
Using a novel modified restriction-site associated DNA sequencing
(RAD-Seq) protocol to target coral DNA, we collected 595 coral-specific
single nucleotide polymorphisms (SNPs) from 189 colonies of the invasive
coral Oculina patagonica from the Spanish Mediterranean coast, including
established core populations and two expansion fronts. Surprisingly,
populations from the recent northern expansion are genetically distinct
from the westward expansion and core populations, and also harbor greater
genetic diversity. We found that temperature may have driven adaptation
along the northern expansion, as genome scans for selection found three
candidate loci associated with temperature in the north but none in the
west. We found no genomic signature of selection associated with
artificial substrate, which has been proposed for explaining the rapid
spread of O. patagonica. This suggests that this coral is simply an
opportunistic colonizer of free space made available by coastal habitat
modifications. Our results suggest that unique genetic variation, possibly
due to limited dispersal across the Ibiza Channel, an influx of
individuals from different depths, and/or adaptation to cooler
temperatures along the northern expansion front may have facilitated the
northward range expansion of O. patagonica in the western Mediterranean.
2015_coralv3VCF file containing SNPsSNP036_oculina_bait_reads.fqfile
containing the sequences generated from the symbiont-free coral colony
used for sequence capture approachAllENVIRONMENTALVARIABLES_Dec2017file
containing all environmental data (temperature max, mean, min, and range
from 2 sources; depth; latitude; longitude)Genet+phasedNexus file
containing sequences for all Oculina patagonica and several Cladocora
colonies genotyped for a nuclear gene.2015_coralv3_vcfref595Fasta file
containing the entire contig sequencesStructure/GenoDive input fileInput
file generated for Structure and GenoDive11Feb2016_161
Spanish Mediterranean Coast
Mediterranean