Natural selection
Can one gene affect butterfly population growth?
Open access · cc by · source: Europe PMC
Allelic variation at Pgi (or tightly linked loci) predicts population growth in the Glanville fritillary metapopulation.
Key findings
Pgi allelic variation associates with population growth; six other typed loci show no comparable effect, supporting a biologically meaningful Pgi link.
Methodology
Authors genotyped natural butterfly populations across a large meadow network and tested whether molecular variation at candidate loci predicts demographic growth.
Limitations
Association could still reflect linkage (e.g., inversion); causality is strongly suggested but not proven by transgenic replacement.
How this study connects
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