Trait evolution, resource specialization and vulnerability to plant extinctions among antillean hummingbirds

Bo Dalsgaard, Jonathan D. Kennedy, Benno I. Simmons, Andrea C. Baquero, Ana M. Martín González, Allan Timmermann, Pietro K. Maruyama, Jimmy A. McGuire, Jeff Ollerton, William J. Sutherland, Carsten Rahbek

    Research output: Contribution to journalArticle

    Abstract

    Species traits are thought to predict feeding specialization and the vulnerability of a species to extinctions of interaction partners, but the context in which a species evolved and currently inhabits may also matter. Notably, the predictive power of traits may require that traits evolved to fit interaction partners. Furthermore, local abiotic and biotic conditions may be important. On islands, for instance, specialized and vulnerable species are predicted to be found mainly in mountains, whereas species in lowlands should be generalized and less vulnerable. We evaluated these predictions for hummingbirds and their nectar-food plants on Antillean islands. Our results suggest that the rates of hummingbird trait divergence were higher among ancestral mainland forms before the colonization of the Antilles. In correspondence with the limited trait evolution that occurred within the Antilles, local abiotic and biotic conditions-not species traits-correlate with hummingbird resource specialization and the vulnerability of hummingbirds to extinctions of their floral resources. Specifically, hummingbirds were more specialized and vulnerable in conditions with high topographical complexity, high rainfall, low temperatures and high floral resource richness, which characterize the Antillean Mountains. These findings show that resource specialization and species vulnerability to extinctions of interaction partners are highly context-dependent.
    Original languageEnglish
    JournalProceedings of the Royal Society B: Biological Sciences
    Volume285
    Issue number1875
    DOIs
    Publication statusPublished - 28 Mar 2018

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    Islands
    Biological Extinction
    Plant Nectar
    Edible Plants
    Temperature

    Bibliographical note

    © 2018 The Author(s).

    Keywords

    • Endemics
    • Island biology
    • Mountains
    • Mutualistic networks
    • Specialization
    • Taxon cycles

    Cite this

    Dalsgaard, B., Kennedy, J. D., Simmons, B. I., Baquero, A. C., Martín González, A. M., Timmermann, A., ... Rahbek, C. (2018). Trait evolution, resource specialization and vulnerability to plant extinctions among antillean hummingbirds. Proceedings of the Royal Society B: Biological Sciences, 285(1875). https://doi.org/10.1098/rspb.2017.2754
    Dalsgaard, Bo ; Kennedy, Jonathan D. ; Simmons, Benno I. ; Baquero, Andrea C. ; Martín González, Ana M. ; Timmermann, Allan ; Maruyama, Pietro K. ; McGuire, Jimmy A. ; Ollerton, Jeff ; Sutherland, William J. ; Rahbek, Carsten. / Trait evolution, resource specialization and vulnerability to plant extinctions among antillean hummingbirds. In: Proceedings of the Royal Society B: Biological Sciences. 2018 ; Vol. 285, No. 1875.
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    Dalsgaard, B, Kennedy, JD, Simmons, BI, Baquero, AC, Martín González, AM, Timmermann, A, Maruyama, PK, McGuire, JA, Ollerton, J, Sutherland, WJ & Rahbek, C 2018, 'Trait evolution, resource specialization and vulnerability to plant extinctions among antillean hummingbirds', Proceedings of the Royal Society B: Biological Sciences, vol. 285, no. 1875. https://doi.org/10.1098/rspb.2017.2754

    Trait evolution, resource specialization and vulnerability to plant extinctions among antillean hummingbirds. / Dalsgaard, Bo; Kennedy, Jonathan D.; Simmons, Benno I.; Baquero, Andrea C.; Martín González, Ana M.; Timmermann, Allan; Maruyama, Pietro K.; McGuire, Jimmy A.; Ollerton, Jeff; Sutherland, William J.; Rahbek, Carsten.

    In: Proceedings of the Royal Society B: Biological Sciences, Vol. 285, No. 1875, 28.03.2018.

    Research output: Contribution to journalArticle

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    AU - Kennedy, Jonathan D.

    AU - Simmons, Benno I.

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    AU - Martín González, Ana M.

    AU - Timmermann, Allan

    AU - Maruyama, Pietro K.

    AU - McGuire, Jimmy A.

    AU - Ollerton, Jeff

    AU - Sutherland, William J.

    AU - Rahbek, Carsten

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    KW - Mutualistic networks

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    KW - Taxon cycles

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