Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary

Abstract The Cretaceous–Paleogene (K–Pg) mass extinction 66 million years ago was characterized by a worldwide ecological catastrophe and rapid species turnover. Large‐scale devastation of forested environments resulting from the Chicxulub asteroid impact likely influenced the evolutionary trajector...

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Autores principales:	Jonathan J. Hughes, Jacob S. Berv, Stephen G. B. Chester, Eric J. Sargis, Daniel J. Field
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	ancestral state reconstruction euarchontans marsupials paleoecology placentals substrate use Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/57cfc8c938e74818906601bcf11f53b4
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spelling	oai:doaj.org-article:57cfc8c938e74818906601bcf11f53b42021-11-08T17:10:40ZEcological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary2045-775810.1002/ece3.8114https://doaj.org/article/57cfc8c938e74818906601bcf11f53b42021-11-01T00:00:00Zhttps://doi.org/10.1002/ece3.8114https://doaj.org/toc/2045-7758Abstract The Cretaceous–Paleogene (K–Pg) mass extinction 66 million years ago was characterized by a worldwide ecological catastrophe and rapid species turnover. Large‐scale devastation of forested environments resulting from the Chicxulub asteroid impact likely influenced the evolutionary trajectories of multiple clades in terrestrial environments, and it has been hypothesized to have biased survivorship in favour of nonarboreal lineages across the K–Pg boundary. Here, we evaluate patterns of substrate preferences across the K–Pg boundary among crown group mammals, a group that underwent rapid diversification following the mass extinction. Using Bayesian, likelihood, and parsimony reconstructions, we identify patterns of mammalian ecological selectivity that are broadly similar to those previously hypothesized for birds. Models based on extant taxa indicate predominant K–Pg survivorship among semi‐ or nonarboreal taxa, followed by numerous independent transitions to arboreality in the early Cenozoic. However, contrary to the predominant signal, some or all members of total‐clade Euarchonta (Primates + Dermoptera + Scandentia) appear to have maintained arboreal habits across the K–Pg boundary, suggesting ecological flexibility during an interval of global habitat instability. We further observe a pronounced shift in character state transitions away from plesiomorphic arboreality associated with the K–Pg transition. Our findings are consistent with the hypothesis that predominantly nonarboreal taxa preferentially survived the end‐Cretaceous mass extinction, and emphasize the pivotal influence of the K‐Pg transition in shaping the early evolutionary trajectories of extant terrestrial vertebrates.Jonathan J. HughesJacob S. BervStephen G. B. ChesterEric J. SargisDaniel J. FieldWileyarticleancestral state reconstructioneuarchontansmarsupialspaleoecologyplacentalssubstrate useEcologyQH540-549.5ENEcology and Evolution, Vol 11, Iss 21, Pp 14540-14554 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ancestral state reconstruction euarchontans marsupials paleoecology placentals substrate use Ecology QH540-549.5
spellingShingle	ancestral state reconstruction euarchontans marsupials paleoecology placentals substrate use Ecology QH540-549.5 Jonathan J. Hughes Jacob S. Berv Stephen G. B. Chester Eric J. Sargis Daniel J. Field Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary
description	Abstract The Cretaceous–Paleogene (K–Pg) mass extinction 66 million years ago was characterized by a worldwide ecological catastrophe and rapid species turnover. Large‐scale devastation of forested environments resulting from the Chicxulub asteroid impact likely influenced the evolutionary trajectories of multiple clades in terrestrial environments, and it has been hypothesized to have biased survivorship in favour of nonarboreal lineages across the K–Pg boundary. Here, we evaluate patterns of substrate preferences across the K–Pg boundary among crown group mammals, a group that underwent rapid diversification following the mass extinction. Using Bayesian, likelihood, and parsimony reconstructions, we identify patterns of mammalian ecological selectivity that are broadly similar to those previously hypothesized for birds. Models based on extant taxa indicate predominant K–Pg survivorship among semi‐ or nonarboreal taxa, followed by numerous independent transitions to arboreality in the early Cenozoic. However, contrary to the predominant signal, some or all members of total‐clade Euarchonta (Primates + Dermoptera + Scandentia) appear to have maintained arboreal habits across the K–Pg boundary, suggesting ecological flexibility during an interval of global habitat instability. We further observe a pronounced shift in character state transitions away from plesiomorphic arboreality associated with the K–Pg transition. Our findings are consistent with the hypothesis that predominantly nonarboreal taxa preferentially survived the end‐Cretaceous mass extinction, and emphasize the pivotal influence of the K‐Pg transition in shaping the early evolutionary trajectories of extant terrestrial vertebrates.
format	article
author	Jonathan J. Hughes Jacob S. Berv Stephen G. B. Chester Eric J. Sargis Daniel J. Field
author_facet	Jonathan J. Hughes Jacob S. Berv Stephen G. B. Chester Eric J. Sargis Daniel J. Field
author_sort	Jonathan J. Hughes
title	Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary
title_short	Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary
title_full	Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary
title_fullStr	Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary
title_full_unstemmed	Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary
title_sort	ecological selectivity and the evolution of mammalian substrate preference across the k–pg boundary
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/57cfc8c938e74818906601bcf11f53b4
work_keys_str_mv	AT jonathanjhughes ecologicalselectivityandtheevolutionofmammaliansubstratepreferenceacrossthekpgboundary AT jacobsberv ecologicalselectivityandtheevolutionofmammaliansubstratepreferenceacrossthekpgboundary AT stephengbchester ecologicalselectivityandtheevolutionofmammaliansubstratepreferenceacrossthekpgboundary AT ericjsargis ecologicalselectivityandtheevolutionofmammaliansubstratepreferenceacrossthekpgboundary AT danieljfield ecologicalselectivityandtheevolutionofmammaliansubstratepreferenceacrossthekpgboundary
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Ecological selectivity and the evolution of mammalian substrate preference across the K–Pg boundary

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