RT info:eu-repo/semantics/article
T1 Genomic signals of adaptation to a natural CO2 gradient over a striking microgeographic scale.
A1 Hernández Pérez, José Carlos
A1 González Delgado, Sara
A1 Pérez Portela, Rocío
A1 Ortega Martínez, Olga
A1 Alfonso, Beatriz
A1 Pereyra, Ricardo T.
A2 Biología Animal y Edafología y Geología
A2 Ecología de Comunidades Marinas y Conservación - Universidad de La Laguna
K1 Ocean acidification
K1 Population genomic
K1 SNPs
K1 CO2 vent
K1 2b-RADseq
K1 Echinoderm
AB Our study explores genomic signs of adaptation in A. lixula to different water pH conditions. To achieve this, we analysed the genomics variation of A. lixula individuals living across a natural pH gradient in Canary Islands, Spain. We use a 2b-RADseq protocol with 74 samples from sites with varying pH levels (from 7.3 to 7.9 during low tide) and included a control site. We identified 14,883 SNPs, with 432 identified as candidate SNPs under selection to pH variations through redundancy analysis. While all SNPs indicated genomic homogeneity, the 432 candidate SNPs under selection displayed genomic differences among sites and along the pH gradient. Out of these 432 loci, 17 were annotated using published A. lixula transcriptomes, involved in biological functions such as growth. Therefore, our findings suggest local adaptation in A. lixula populations to acidification in CO 2 even over short distances of 75 m, underscoring their potential resistance to future Ocean Acidification.
SN 0025-326X
YR 2024
FD 2024
LK http://riull.ull.es/xmlui/handle/915/41206
UL http://riull.ull.es/xmlui/handle/915/41206
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 14-jun-2025