Data from: Geographic structure in the Southern Ocean circumpolar brittle star Ophionotus victoriae (Ophiuridae) revealed from mtDNA and single nucleotide polymorphism data ...

• Main Authors: Galaska, Matthew P., Sands, Chester J., Santos, Scott R., Mahon, Andrew R., Halanych, Kenneth M.
• Format: Dataset
• Language: English
• Published: Dryad 2017
• Subjects: Ophionotus victoriae; RAD; Ophiuroid; Antarctic; Antarctic Peninsula; Ross Sea; Southern Ocean; The Antarctic; Weddell; Weddell Sea; Antarc*
• Online Access: https://dx.doi.org/10.5061/dryad.0k1r0; https://datadryad.org/stash/dataset/doi:10.5061/dryad.0k1r0

Marine systems have traditionally been thought of as “open” with few barriers to gene flow. In particular, many marine organisms in the Southern Ocean purportedly possess circumpolar distributions that have rarely been well verified. Here, we use the highly abundant and endemic Southern Ocean brittle star Ophionotus victoriae to examine genetic structure and determine whether barriers to gene flow have existed around the Antarctic continent. Ophionotus victoriae possesses feeding planktotrophic larvae with presumed high dispersal capability, but a previous study revealed genetic structure along the Antarctic Peninsula. To test the extent of genetic differentiation within O. victoriae, we sampled from the Ross Sea through the eastern Weddell Sea. Whereas two mitochondrial DNA markers (16S rDNA and COI) were employed to allow comparison to earlier work, a 2b-RAD single-nucleotide polymorphism (SNP) approach allowed sampling of loci across the genome. Mitochondrial data from 414 individuals suggested three ... : 2b-RAD STRUCTURE alignment of Ophionotus victoriae (Meyer)1,999 bi-allelic SNP loci using Dr. Eli Meyer's (Oregon State University) scripts which can be found at (https://github.com/Eli-Meyer)Ophionotus_Meyer_pipeline.stru2b-RAD STRUCTURE alignment of Ophionotus victoriae (STACKS)1,739 bi-allelic SNP loci using using the STACKS software package.Ophionotus_STACKS.struOphionotus_cleaned_fastaCompressed fasta files that have been screened for quality, size and presence of the AlfI restriction site. This data is ready for further processing through STACKS software, Eli Meyer's (Oregon State University) scripts (https://github.com/Eli-Meyer) or through custom software. ...