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- W4313857747 abstract "A key area of interest in evolutionary biology has been understanding the role of ecological opportunity in the formation of adaptive radiations, lineages where speciation and phenotypic diversification are driven by open ecological opportunity. Evolutionary theory posits that adaptive radiations should show initial bursts of ecomorphological diversification and rapid speciation, and that these two processes are correlated. Here, we investigate and contrast these predictions across ecomorphologically diverse continental (Australia) and insular (New Caledonia and New Zealand) radiations of diplodactyloid geckos. We test two key hypotheses: (a) that island colonization and the transition to novel niche-space has resulted in increased rates of speciation and trait diversification and (b) that rates of morphological diversification are correlated across multiple trait axes. Surprisingly, we find that speciation rate is homogenous and morphological diversification rates are idiosyncratic and uncorrelated with speciation rates. Tests of morphological integration suggests that while all traits coevolve, constraint may act differentially on individual axes. This accords with a growing number of studies indicating that ecologically diverse and species-rich radiations can show limited or no evidence of exceptional regime shifts in speciation dynamics or morphological diversification, especially in continental contexts." @default.
- W4313857747 created "2023-01-10" @default.
- W4313857747 creator A5015887308 @default.
- W4313857747 creator A5082889030 @default.
- W4313857747 date "2022-12-08" @default.
- W4313857747 modified "2023-10-16" @default.
- W4313857747 title "Ecologically diverse island-associated lizard radiation shows idiosyncratic trait diversification shifts and homogenous speciation dynamics" @default.
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- W4313857747 doi "https://doi.org/10.1093/evolut/qpac002" @default.
- W4313857747 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36622227" @default.
- W4313857747 hasPublicationYear "2022" @default.
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