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Earth history and the passerine superradiation
Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA.
Univ Bath, Milner Ctr Evolut, Dept Biol & Biochem, Bath BA2 7AY, Avon, England;Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England.ORCID iD: 0000-0002-1786-0352
Bruce Museum, Greenwich, CT 06830 USA.
Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA;Univ Minnesota, Bell Museum Nat Hist, St Paul, MN 55108 USA.
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2019 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 116, no 16, p. 7916-7925Article in journal (Refereed) Published
Abstract [en]

Avian diversification has been influenced by global climate change, plate tectonic movements, and mass extinction events. However, the impact of these factors on the diversification of the hyper-diverse perching birds (passerines) is unclear because family level relationships are unresolved and the timing of splitting events among lineages is uncertain. We analyzed DNA data from 4,060 nuclear loci and 137 passerine families using concatenation and coalescent approaches to infer a comprehensive phylogenetic hypothesis that clarifies relationships among all passerine families. Then, we calibrated this phylogeny using 13 fossils to examine the effects of different events in Earth history on the timing and rate of passerine diversification. Our analyses reconcile passerine diversification with the fossil and geological records; suggest that passerines originated on the Australian landmass ∼47 Ma; and show that subsequent dispersal and diversification of passerines was affected by a number of climatological and geological events, such as Oligocene glaciation and inundation of the New Zealand landmass. Although passerine diversification rates fluctuated throughout the Cenozoic, we find no link between the rate of passerine diversification and Cenozoic global temperature, and our analyses show that the increases in passerine diversification rate we observe are disconnected from the colonization of new continents. Taken together, these results suggest more complex mechanisms than temperature change or ecological opportunity have controlled macroscale patterns of passerine speciation.

Place, publisher, year, edition, pages
2019. Vol. 116, no 16, p. 7916-7925
Keywords [en]
Passeriformes, diversification, macroevolution, climate, biogeography
National Category
Evolutionary Biology
Identifiers
URN: urn:nbn:se:uu:diva-382842DOI: 10.1073/pnas.1813206116ISI: 000464767500051PubMedID: 30936315OAI: oai:DiVA.org:uu-382842DiVA, id: diva2:1316802
Funder
Swedish Research Council, 2015-04402Available from: 2019-05-21 Created: 2019-05-21 Last updated: 2019-05-21Bibliographically approved

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