Morphology and niche evolution influence hummingbird speciation rates
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Morphology and niche evolution influence hummingbird speciation rates. / Barreto, Elisa; Lim, Marisa C. W.; Rojas, Danny; Dávalos, Liliana M.; Wüest, Rafael O.; Machac, Antonin; Graham, Catherine H.
In: Proceedings of the Royal Society B: Biological Sciences, Vol. 290, No. 1997, 20221793, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Morphology and niche evolution influence hummingbird speciation rates
AU - Barreto, Elisa
AU - Lim, Marisa C. W.
AU - Rojas, Danny
AU - Dávalos, Liliana M.
AU - Wüest, Rafael O.
AU - Machac, Antonin
AU - Graham, Catherine H.
PY - 2023
Y1 - 2023
N2 - How traits affect speciation is a long-standing question in evolution. We investigate whether speciation rates are affected by the traits themselves or by the rates of their evolution, in hummingbirds, a clade with great variation in speciation rates, morphology and ecological niches. Further, we test two opposing hypotheses, postulating that speciation rates are promoted by trait conservatism or, alternatively, by trait divergence. To address these questions, we analyse morphological (body mass and bill length) and niche traits (temperature and precipitation position and breadth, and mid-elevation), using a variety of methods to estimate speciation rates and correlate them with traits and their evolutionary rates. When it comes to the traits, we find faster speciation in smaller hummingbirds with shorter bills, living at higher elevations and experiencing greater temperature ranges. As for the trait evolutionary rates, we find that speciation increases with rates of divergence in the niche traits, but not in the morphological traits. Together, these results reveal the interplay of mechanisms through which different traits and their evolutionary rates (conservatism or divergence) influence the origination of hummingbird diversity.
AB - How traits affect speciation is a long-standing question in evolution. We investigate whether speciation rates are affected by the traits themselves or by the rates of their evolution, in hummingbirds, a clade with great variation in speciation rates, morphology and ecological niches. Further, we test two opposing hypotheses, postulating that speciation rates are promoted by trait conservatism or, alternatively, by trait divergence. To address these questions, we analyse morphological (body mass and bill length) and niche traits (temperature and precipitation position and breadth, and mid-elevation), using a variety of methods to estimate speciation rates and correlate them with traits and their evolutionary rates. When it comes to the traits, we find faster speciation in smaller hummingbirds with shorter bills, living at higher elevations and experiencing greater temperature ranges. As for the trait evolutionary rates, we find that speciation increases with rates of divergence in the niche traits, but not in the morphological traits. Together, these results reveal the interplay of mechanisms through which different traits and their evolutionary rates (conservatism or divergence) influence the origination of hummingbird diversity.
KW - diversification
KW - dynamic traits
KW - evolutionary divergence
KW - niche conservatism
KW - Trochilidae
U2 - 10.1098/rspb.2022.1793
DO - 10.1098/rspb.2022.1793
M3 - Journal article
C2 - 37072043
AN - SCOPUS:85152863847
VL - 290
JO - Proceedings of the Royal Society B: Biological Sciences
JF - Proceedings of the Royal Society B: Biological Sciences
SN - 0962-8452
IS - 1997
M1 - 20221793
ER -
ID: 344795648