European Sardine Genomic Data for Population Structure and Condition Analysis

5,506 single nucleotide polymorphisms (SNPs) from six locations in the Atlantic Ocean and Mediterranean Sea, used to investigate the genetic structure of European sardine populations. The data, authored by Marta Caballero-Huertas and last updated in May 2026, identified strong differentiation between Atlantic–Alboran and Mediterranean groups and linked specific loci to somatic condition. This work provides the first genomic evidence connecting genetic markers to the somatic condition of this ecologically and economically important fish.

Use Cases

• Identify population structure and biogeographical barriers based on 5,506 SNP markers.
• Investigate associations between genetic loci and somatic condition (Kn) in fish.
• Estimate effective population size (Ne) and assess the impact of chromosomal inversions on these estimates.
• Compare genetic differentiation using both neutral and outlier loci to understand local adaptation.

Strengths

• Includes 5,506 SNP markers for high-resolution genomic analysis.
• Samples from six distinct geographic locations across the Atlantic Ocean and Mediterranean Sea.
• Identified 2.3% of loci as outlier SNPs, contributing disproportionately to population divergence (FST = 0.242).
• Uses two complementary statistical approaches to identify SNPs associated with somatic condition.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for some analyses.
• The primary data file is a 899.6 KB PDF, which may require extraction of underlying tabular data.

Provenance

Source

figshare, authored by Marta Caballero-Huertas.

Collection Method

Genomic sequencing and analysis, likely from tissue samples.

Freshness

Last updated 2026-05-14 10:02:25; freshness should be verified.

Geography

Six locations in the Atlantic Ocean and Mediterranean Sea, including the Adriatic Sea and the Almeria–Oran Front.