Genomic signals of adaptation to a natural CO2 gradient over a striking microgeographic scale

• DOI: 10.1016/j.marpolbul.2024.117225
• Publication Date: 2024-11-07T01:59:40Z
• Authors: Sara González-Del...; Rocío Pérez-Portela; Olga Ortega-Martínez; Beatriz Alfonso; Ricardo T. Pereyra; José Carlos Herná...

Our study explores genomic signs of adaptation in A. lixula to different water pH conditions. To achieve this, we analysed the genomics variation individuals living across a natural gradient Canary Islands, Spain. We use 2b-RADseq protocol with 74 samples from sites varying levels (from 7.3 7.9 during low tide) and included control site. identified 14,883 SNPs, 432 as candidate SNPs under selection variations through redundancy analysis. While all indicated homogeneity, displayed differences among along gradient. Out these loci, 17 were annotated using published transcriptomes, involved biological functions such growth. Therefore, our findings suggest local populations acidification CO