Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts

Abstract The majority of the analyses of the evolutionary history of the megadiverse class Insecta are based on the documented taxonomic palaeobiodiversity. A different approach, poorly investigated, is to focus on morphological disparity, linked to changes in the organisms’ functioning. Here we est...

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Autores principales:	Patricia Nel, Sylvain Bertrand, André Nel
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd7d4b7c948640708a603a67883c62a8
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spelling	oai:doaj.org-article:bd7d4b7c948640708a603a67883c62a82021-12-02T16:07:50ZDiversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts10.1038/s41598-018-21938-12045-2322https://doaj.org/article/bd7d4b7c948640708a603a67883c62a82018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21938-1https://doaj.org/toc/2045-2322Abstract The majority of the analyses of the evolutionary history of the megadiverse class Insecta are based on the documented taxonomic palaeobiodiversity. A different approach, poorly investigated, is to focus on morphological disparity, linked to changes in the organisms’ functioning. Here we establish a hierarchy of the great geological epochs based on a new method using Wagner parsimony and a ‘presence/absence of a morphological type of mouthpart of Hexapoda’ dataset. We showed the absence of major rupture in the evolution of the mouthparts, but six epochs during which numerous innovations and few extinctions happened, i.e., Late Carboniferous, Middle and Late Triassic, ‘Callovian-Oxfordian’, ‘Early’ Cretaceous, and ‘Albian-Cenomanian’. The three crises Permian-Triassic, Triassic-Jurassic, and Cretaceous-Cenozoic had no strong, visible impact on mouthparts types. We particularly emphasize the origination of mouthparts linked to nectarivory during the Cretaceous Terrestrial Revolution. We also underline the origination of mouthparts linked to phytophagy during the Middle and the Late Triassic, correlated to the diversification of the gymnosperms, especially in relation to the complex ‘flowers’ producing nectar of the Bennettitales and Gnetales.Patricia NelSylvain BertrandAndré NelNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Patricia Nel Sylvain Bertrand André Nel Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts
description	Abstract The majority of the analyses of the evolutionary history of the megadiverse class Insecta are based on the documented taxonomic palaeobiodiversity. A different approach, poorly investigated, is to focus on morphological disparity, linked to changes in the organisms’ functioning. Here we establish a hierarchy of the great geological epochs based on a new method using Wagner parsimony and a ‘presence/absence of a morphological type of mouthpart of Hexapoda’ dataset. We showed the absence of major rupture in the evolution of the mouthparts, but six epochs during which numerous innovations and few extinctions happened, i.e., Late Carboniferous, Middle and Late Triassic, ‘Callovian-Oxfordian’, ‘Early’ Cretaceous, and ‘Albian-Cenomanian’. The three crises Permian-Triassic, Triassic-Jurassic, and Cretaceous-Cenozoic had no strong, visible impact on mouthparts types. We particularly emphasize the origination of mouthparts linked to nectarivory during the Cretaceous Terrestrial Revolution. We also underline the origination of mouthparts linked to phytophagy during the Middle and the Late Triassic, correlated to the diversification of the gymnosperms, especially in relation to the complex ‘flowers’ producing nectar of the Bennettitales and Gnetales.
format	article
author	Patricia Nel Sylvain Bertrand André Nel
author_facet	Patricia Nel Sylvain Bertrand André Nel
author_sort	Patricia Nel
title	Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts
title_short	Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts
title_full	Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts
title_fullStr	Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts
title_full_unstemmed	Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts
title_sort	diversification of insects since the devonian: a new approach based on morphological disparity of mouthparts
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/bd7d4b7c948640708a603a67883c62a8
work_keys_str_mv	AT patricianel diversificationofinsectssincethedevoniananewapproachbasedonmorphologicaldisparityofmouthparts AT sylvainbertrand diversificationofinsectssincethedevoniananewapproachbasedonmorphologicaldisparityofmouthparts AT andrenel diversificationofinsectssincethedevoniananewapproachbasedonmorphologicaldisparityofmouthparts
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Diversification of insects since the Devonian: a new approach based on morphological disparity of mouthparts

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