Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 17, 2025
ABSTRACT Natural dispersal between populations, and resulting immigration, influences population size genetic variation is therefore a key process driving reciprocal interactions ecological evolutionary dynamics. Here, dynamic outcomes fundamentally depend not only on the relative fitnesses of natural immigrants existing residents, but also fitness their various descendants manifested in environments. Yet, different sets immigrants' have rarely been explicitly or rigorously estimated rationalised context wild spatially structured populations. We still surprisingly limited capability to understand predict ultimate multi‐generational impacts immigration Key theoretical frameworks that outcrossing lineages developed widely utilised contexts agriculture speciation research. These applied conservation genetics research positive (widely termed “heterosis”) negative “outbreeding depression”) rescue highly inbred However, these guide analyses legacies regular ecology, precluding inferences basis of, implications sub‐population divergence. Accordingly, facilitate translation concepts inspire new empirical efforts, we first review synthesise bodies theory outcomes, crosses lines species. Such reveals how diverse can be generated by common underlying mechanisms, depending architecture fitness, forms genotype–phenotype–fitness maps, roles adaptive non‐adaptive mechanisms differentiation. Interestingly, such predicts particularly weakly diverged lineages, constituting parameter space where populations lie. then conduct systematic literature assess degree which actually quantified. Our shows surprising paucity studies quantify consequences from wild. Furthermore, undertaking experimental among used inconsistent methodologies, quantitative even qualitative overall conclusions. To initiate progress, outline long‐standing recent methodological developments, including cutting‐edge statistical genomic tools, could combined with field data residents nature. thereby highlight gaps now need filled further our understanding dispersal‐mediated drivers constraints eco‐evolutionary dynamics arising
Language: Английский