Script and data (primary and secondary data) for Stanislawek et al "A few genes modulate the ecological impact of a freshwater fish species on food webs and ecosystem functions"

Genome-wide diversity explained few ecological responses, with moderate effects (). In contrast, variation at specific candidate SNPs predicted all ecological responses consistently across climatic conditions, with effect sizes being more than twice those of genome-wide estimates (). Moreover, combining information from small subsets of candidate SNPs outperformed both single-locus and genome-wide diversity for all ecological responses, consistent with an oligogenic architecture for gene-to-ecosystem relationships.

Enrichment analyses revealed functional pathways related to growth, development and metabolic regulation, driven by a small set of pleiotropic genes. We demonstrate that the ecological consequences of intraspecific genetic variation arose from a limited fraction of the genome, highlighting the importance of functional genomic structure, rather than genome-wide diversity alone, in shaping eco-evolutionary dynamics.</p>