Effects of an adaptive zone shift on morphological and ecological diversification in terapontid fishes

Aaron M. Davis, Peter UNMACK, Bradley J. Pusey, Richard Pearson, David L. Morgan

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    A fundamental goal of evolutionary ecology is understanding the processes responsible for contemporary patterns of morphological diversity and species richness. Transitions across the marine–freshwater interface are regarded as key triggers for adaptive radiation of many clades. Using the Australian terapontid fish family as a model system we employed phylogenetic analyses to compare the rates of ecological (dietary) and morphological evolution between marine and freshwater species of the family. Results suggested significantly higher rates of phenotypic evolution in key dietary and morphological characters in freshwater species compared to marine counterparts. Moreover, there was significant correlation between several of these dietary and morphological characters, suggesting an underlying ecomorphological aspect to these greater rates of phenotypic evolution in freshwater clades. Australia’s biogeographic history, which has precluded colonisation by many of the major ostariophysan fish families that make up much global freshwater fish diversity, appears to have provided the requisite ‘ecological opportunity’ to facilitate the radiation of invading marine-derived fish clades.
    Original languageEnglish
    Pages (from-to)205-227
    Number of pages23
    JournalEvolutionary Ecology
    Volume28
    Issue number2
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    fish
    adaptive radiation
    freshwater fish
    ecology
    species diversity
    history
    colonization
    species richness
    phylogeny
    phylogenetics
    effect
    family
    rate
    radiation

    Cite this

    Davis, Aaron M. ; UNMACK, Peter ; Pusey, Bradley J. ; Pearson, Richard ; Morgan, David L. / Effects of an adaptive zone shift on morphological and ecological diversification in terapontid fishes. In: Evolutionary Ecology. 2014 ; Vol. 28, No. 2. pp. 205-227.
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    title = "Effects of an adaptive zone shift on morphological and ecological diversification in terapontid fishes",
    abstract = "A fundamental goal of evolutionary ecology is understanding the processes responsible for contemporary patterns of morphological diversity and species richness. Transitions across the marine–freshwater interface are regarded as key triggers for adaptive radiation of many clades. Using the Australian terapontid fish family as a model system we employed phylogenetic analyses to compare the rates of ecological (dietary) and morphological evolution between marine and freshwater species of the family. Results suggested significantly higher rates of phenotypic evolution in key dietary and morphological characters in freshwater species compared to marine counterparts. Moreover, there was significant correlation between several of these dietary and morphological characters, suggesting an underlying ecomorphological aspect to these greater rates of phenotypic evolution in freshwater clades. Australia’s biogeographic history, which has precluded colonisation by many of the major ostariophysan fish families that make up much global freshwater fish diversity, appears to have provided the requisite ‘ecological opportunity’ to facilitate the radiation of invading marine-derived fish clades.",
    keywords = "Dietary radiation, Morphological disparity, Marine–freshwater transition, Trophic ecology, Ecomorphology.",
    author = "Davis, {Aaron M.} and Peter UNMACK and Pusey, {Bradley J.} and Richard Pearson and Morgan, {David L.}",
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    Effects of an adaptive zone shift on morphological and ecological diversification in terapontid fishes. / Davis, Aaron M.; UNMACK, Peter; Pusey, Bradley J.; Pearson, Richard; Morgan, David L.

    In: Evolutionary Ecology, Vol. 28, No. 2, 2014, p. 205-227.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Effects of an adaptive zone shift on morphological and ecological diversification in terapontid fishes

    AU - Davis, Aaron M.

    AU - UNMACK, Peter

    AU - Pusey, Bradley J.

    AU - Pearson, Richard

    AU - Morgan, David L.

    PY - 2014

    Y1 - 2014

    N2 - A fundamental goal of evolutionary ecology is understanding the processes responsible for contemporary patterns of morphological diversity and species richness. Transitions across the marine–freshwater interface are regarded as key triggers for adaptive radiation of many clades. Using the Australian terapontid fish family as a model system we employed phylogenetic analyses to compare the rates of ecological (dietary) and morphological evolution between marine and freshwater species of the family. Results suggested significantly higher rates of phenotypic evolution in key dietary and morphological characters in freshwater species compared to marine counterparts. Moreover, there was significant correlation between several of these dietary and morphological characters, suggesting an underlying ecomorphological aspect to these greater rates of phenotypic evolution in freshwater clades. Australia’s biogeographic history, which has precluded colonisation by many of the major ostariophysan fish families that make up much global freshwater fish diversity, appears to have provided the requisite ‘ecological opportunity’ to facilitate the radiation of invading marine-derived fish clades.

    AB - A fundamental goal of evolutionary ecology is understanding the processes responsible for contemporary patterns of morphological diversity and species richness. Transitions across the marine–freshwater interface are regarded as key triggers for adaptive radiation of many clades. Using the Australian terapontid fish family as a model system we employed phylogenetic analyses to compare the rates of ecological (dietary) and morphological evolution between marine and freshwater species of the family. Results suggested significantly higher rates of phenotypic evolution in key dietary and morphological characters in freshwater species compared to marine counterparts. Moreover, there was significant correlation between several of these dietary and morphological characters, suggesting an underlying ecomorphological aspect to these greater rates of phenotypic evolution in freshwater clades. Australia’s biogeographic history, which has precluded colonisation by many of the major ostariophysan fish families that make up much global freshwater fish diversity, appears to have provided the requisite ‘ecological opportunity’ to facilitate the radiation of invading marine-derived fish clades.

    KW - Dietary radiation

    KW - Morphological disparity

    KW - Marine–freshwater transition

    KW - Trophic ecology

    KW - Ecomorphology.

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