Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/113683
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Type: Journal article
Title: Adult frogs and tadpoles have different macroevolutionary patterns across the Australian continent
Author: Sherratt, E.
Vidal-García, M.
Anstis, M.
Keogh, J.
Citation: Nature Ecology and Evolution, 2017; 1(9):1385-1391
Publisher: Springer Nature
Issue Date: 2017
ISSN: 2397-334X
2397-334X
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Responsibility: 
Emma Sherratt, Marta Vidal-García, Marion Anstis and J. Scott Keogh
Abstract: Developmental changes through an animal’s life are generally understood to contribute to the resulting adult morphology. Possible exceptions are species with complex life cycles, where individuals pass through distinct ecological and morphological life stages during their ontogeny, ending with metamorphosis to the adult form. Antagonistic selection is expected to drive low genetic correlations between life stages, theoretically permitting stages to evolve independently. Here we describe, using Australian frog radiation, the evolutionary consequences on morphological evolution when life stages are under different selective pressures. We use morphometrics to characterize body shape of tadpoles and adults across 166 species of frog and investigate similarities in the two resulting morphological spaces (morphospaces) to test for concerted evolution across metamorphosis in trait variation during speciation. A clear pattern emerges: Australian frogs and their tadpoles are evolving independently; their markedly different morphospaces and contrasting estimated evolutionary histories of body shape diversification indicate that different processes are driving morphological diversification at each stage. Tadpole morphospace is characterized by rampant homoplasy, convergent evolution and high lineage density. By contrast, the adult morphospace shows greater phylogenetic signal, low lineage density and divergent evolution between the main clades. Our results provide insight into the macroevolutionary consequences of a biphasic life cycle.
Keywords: Animals; Anura; Phylogeny; Metamorphosis, Biological; Larva; Australia; Biological Evolution
Description: Published online: 14 August 2017
Rights: © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
RMID: 0030075166
DOI: 10.1038/s41559-017-0268-6
Grant ID: http://purl.org/au-research/grants/arc/DP150102403
Published version: https://www.nature.com/articles/s41559-017-0268-6
Appears in Collections:Zoology publications

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