Global patterns of insect diversification: towards a reconciliation of fossil and molecular evidence?

Scientific Reports
Fabien L CondamineGael J Kergoat

Abstract

Macroevolutionary studies of insects at diverse taxonomic scales often reveal dynamic evolutionary patterns, with multiple inferred diversification rate shifts. Responses to major past environmental changes, such as the Cretaceous Terrestrial Revolution, or the development of major key innovations, such as wings or complete metamorphosis are usually invoked as potential evolutionary triggers. However this view is partially contradicted by studies on the family-level fossil record showing that insect diversification was relatively constant through time. In an attempt to reconcile both views, we investigate large-scale insect diversification dynamics at family level using two distinct types of diversification analyses on a molecular timetree representing ca. 82% of the extant families, and reassess the insect fossil diversity using up-to-date records. Analyses focusing on the fossil record recovered an early burst of diversification, declining to low and steady rates through time, interrupted by extinction events. Phylogenetic analyses showed that major shifts of diversification rates only occurred in the four richest holometabolous orders. Both suggest that neither the development of flight or complete metamorphosis nor the Cret...Continue Reading

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Citations

Nov 10, 2017·Proceedings. Biological Sciences·Dahiana Arcila, James C Tyler
Sep 16, 2017·Evolution; International Journal of Organic Evolution·James P Herrera
Feb 27, 2018·Systematic Biology·Frédéric Legendre, Fabien L Condamine
Aug 5, 2017·BMC Evolutionary Biology·Ranjit Kumar SahooUllasa Kodandaramaiah
Jan 20, 2018·Science Advances·Timo J B van EldijkBas van de Schootbrugge
Dec 19, 2019·Proceedings. Biological Sciences·Sandra R SchachatJonathan L Payne
Jan 23, 2020·Proceedings. Biological Sciences·Francis J NgeMichelle Waycott
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Sep 22, 2020·Biological Reviews of the Cambridge Philosophical Society·Michel BaguetteBertrand Schatz
May 10, 2017·Frontiers in Plant Science·Qingqing Zhang, Bo Wang
Jul 28, 2021·Nature Ecology & Evolution·Neil Brocklehurst, Roger J Benson
Oct 27, 2021·The New Phytologist·Michael J BentonHervé Sauquet

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Software Mentioned

BAMM
TreePar
PyRate
MEDUSA
BAMMtools
BAMMtools R - package
rjMCMC

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