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Title

Dispersal ability and its consequences for population genetic differentiation and diversification

AuthorsSuárez, Daniel; Arribas, Paula CSIC ORCID ; Jiménez-García, Eduardo; Emerson, Brent C. CSIC ORCID
KeywordsDispersal
population structure
diversification
arthropod
spider
beetle
Issue Date18-May-2022
PublisherRoyal Society (Great Britain)
CitationProceedings of the Royal Society B, 289(1975): 1-10 (2022)
AbstractDispersal ability is known to influence geographical structuring of genetic variation within species, with a direct relationship between low vagility and population genetic structure, which can potentially give rise to allopatric speciation. However, our general understanding of the relationship between dispersal ability, population differentiation and lineage diversification is limited. To address this issue, we sampled mitochondrial DNA variation within lineages of beetles and spiders across the Canary Islands to explore the relationships between dispersal ability, differentiation within lineages and diversification. We found positive relationships between population genetic structure and diversification for both beetles and spiders. Comparisons between dispersive and non-dispersive lineages revealed significant differences for both lineage differentiation and diversification. For both taxa, non-dispersive lineages had stronger population genetic structure. Genus-level endemic species richness and proxies for diversification rate within genera were higher in non-dispersive taxa for both beetles and spiders. Comparisons of average and maximum node divergences within genera suggest that species turnover may be higher in non-dispersive genera. Our results reveal a model where dispersal limitation may shape the diversity of lineages across evolutionary timescales by positively influencing intraspecific and species diversity, moderated by higher extinction rates compared to more dispersive lineages.
Publisher version (URL)https://doi.org/10.1098/rspb.2022.0489
URIhttp://hdl.handle.net/10261/269861
DOI10.1098/rspb.2022.0489
ISSN0962-8452
E-ISSN1471-2954
Appears in Collections:(IPNA) Artículos




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