气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and body size, change in allele frequency of Strongylocentrotus purpuratus larvae

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.912484
	Seawater carbonate chemistry and body size, change in allele frequency of Strongylocentrotus purpuratus larvae
	Brennan; Reid S; Garrett; April D; Huber; Kaitlin E; Hargarten; Heidi; Pespeni; Melissa H
发布日期	2020-02-25
数据集类型	dataset
英文关键词	Animalia ; Bottles or small containers/Aquaria ( 20 L) ; Coast and continental shelf ; Echinodermata ; Gene expression (incl. proteomics) ; Laboratory experiment ; North Pacific ; Pelagos ; Single species ; Strongylocentrotus purpuratus ; Temperate ; Zooplankton
英文简介	Standing genetic variation is important for population persistence in extreme environmental conditions. While some species may have the capacity to adapt to predicted average future global change conditions, the ability to survive extreme events is largely unknown. We used single-generation selection experiments on hundreds of thousands of Strongylocentrotus purpuratus sea urchin larvae generated from wild-caught adults to identify adaptive genetic variation responsive to moderate (pH 8.0) and extreme (pH 7.5) low-pH conditions. Sequencing genomic DNA from pools of larvae, we identified consistent changes in allele frequencies across replicate cultures for each pH condition and observed increased linkage disequilibrium around selected loci, revealing selection on recombined standing genetic variation. We found that loci responding uniquely to either selection regime were at low starting allele frequencies while variants that responded to both pH conditions (11.6% of selected variants) started at high frequencies. Loci under selection performed functions related to energetics, pH tolerance, cell growth and actin/cytoskeleton dynamics. These results highlight that persistence in future conditions will require two classes of genetic variation: common, pH-responsive variants maintained by balancing selection in a heterogeneous environment, and rare variants, particularly for extreme conditions, that must be maintained by large population sizes.
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215650
推荐引用方式 GB/T 7714	Brennan,Reid S,Garrett,et al. Seawater carbonate chemistry and body size, change in allele frequency of Strongylocentrotus purpuratus larvae.2020-02-25.https://doi.org/10.1594/PANGAEA.912484.