Separate the wheat from the chaff: genomic scan for local adaptation in the red coral Corallium rubrum

• DOI: 10.24072/pcjournal.12
• Publication Date: 2021-11-26T15:17:38Z
• Authors: M. Pratlong; A. Haguenauer; K. Brener; G. Mitta; E. Toulza; J. Garrabou; N. Bensoussan; P. Pontarotti; D. Aurelle
• Keywords: Local adaptation; Anthozoa

Genomic data allow an in-depth and renewed study of local adaptation. The red coral (Corallium rubrum, Cnidaria) is a highly genetically structured species promising model for the adaptive processes along environmental gradient. Here, we used RAD-Sequencing in order to vertical genetic structure this search signals adaptation depth thermal regime coral. Previous studies have shown different thermotolerance levels according which could correspond or differences. We designed sampling scheme with six pairs shallow vs deep populations distributed three geographical regions as replicates. Our results showed significant differentiation among locations sites separated by around 20 m depth. tests association between genetics environment allowed identification candidate loci under selection but potentially high rate false positive. discuss methodological obstacles biases encountered detection selected such strongly species. On basis, also significance detected each region evolution gradients.