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Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion

The rise of Neogene C(4) grasslands is one of the most drastic changes recently experienced by the biosphere. A central - and widely debated - hypothesis posits that Neogene grasslands acted as a major adaptive zone for herbivore lineages. We test this hypothesis with a novel model system, the Sesam...

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Autores principales: Kergoat, Gael J., Condamine, Fabien L., Toussaint, Emmanuel F. A., Capdevielle-Dulac, Claire, Clamens, Anne-Laure, Barbut, Jérôme, Goldstein, Paul Z., Le Ru, Bruno
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269479/
https://www.ncbi.nlm.nih.gov/pubmed/30504767
http://dx.doi.org/10.1038/s41467-018-07537-8
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author Kergoat, Gael J.
Condamine, Fabien L.
Toussaint, Emmanuel F. A.
Capdevielle-Dulac, Claire
Clamens, Anne-Laure
Barbut, Jérôme
Goldstein, Paul Z.
Le Ru, Bruno
author_facet Kergoat, Gael J.
Condamine, Fabien L.
Toussaint, Emmanuel F. A.
Capdevielle-Dulac, Claire
Clamens, Anne-Laure
Barbut, Jérôme
Goldstein, Paul Z.
Le Ru, Bruno
author_sort Kergoat, Gael J.
collection PubMed
description The rise of Neogene C(4) grasslands is one of the most drastic changes recently experienced by the biosphere. A central - and widely debated - hypothesis posits that Neogene grasslands acted as a major adaptive zone for herbivore lineages. We test this hypothesis with a novel model system, the Sesamiina stemborer moths and their associated host-grasses. Using a comparative phylogenetic framework integrating paleoenvironmental proxies we recover a negative correlation between the evolutionary trajectories of insects and plants. Our results show that paleoenvironmental changes generated opposing macroevolutionary dynamics in this insect-plant system and call into question the role of grasslands as a universal adaptive cradle. This study illustrates the importance of implementing environmental proxies in diversification analyses to disentangle the relative impacts of biotic and abiotic drivers of macroevolutionary dynamics.
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spelling pubmed-62694792018-12-03 Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion Kergoat, Gael J. Condamine, Fabien L. Toussaint, Emmanuel F. A. Capdevielle-Dulac, Claire Clamens, Anne-Laure Barbut, Jérôme Goldstein, Paul Z. Le Ru, Bruno Nat Commun Article The rise of Neogene C(4) grasslands is one of the most drastic changes recently experienced by the biosphere. A central - and widely debated - hypothesis posits that Neogene grasslands acted as a major adaptive zone for herbivore lineages. We test this hypothesis with a novel model system, the Sesamiina stemborer moths and their associated host-grasses. Using a comparative phylogenetic framework integrating paleoenvironmental proxies we recover a negative correlation between the evolutionary trajectories of insects and plants. Our results show that paleoenvironmental changes generated opposing macroevolutionary dynamics in this insect-plant system and call into question the role of grasslands as a universal adaptive cradle. This study illustrates the importance of implementing environmental proxies in diversification analyses to disentangle the relative impacts of biotic and abiotic drivers of macroevolutionary dynamics. Nature Publishing Group UK 2018-11-30 /pmc/articles/PMC6269479/ /pubmed/30504767 http://dx.doi.org/10.1038/s41467-018-07537-8 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kergoat, Gael J.
Condamine, Fabien L.
Toussaint, Emmanuel F. A.
Capdevielle-Dulac, Claire
Clamens, Anne-Laure
Barbut, Jérôme
Goldstein, Paul Z.
Le Ru, Bruno
Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion
title Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion
title_full Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion
title_fullStr Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion
title_full_unstemmed Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion
title_short Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion
title_sort opposite macroevolutionary responses to environmental changes in grasses and insects during the neogene grassland expansion
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269479/
https://www.ncbi.nlm.nih.gov/pubmed/30504767
http://dx.doi.org/10.1038/s41467-018-07537-8
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