Modularity promotes morphological divergence in ray-finned fishes

Abstract Modularity is considered a prerequisite for the evolvability of biological systems. This is because in theory, individual modules can follow quasi-independent evolutionary trajectories or evolve at different rates compared to other aspects of the organism. This may influence the potential o...

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Autores principales:	Olivier Larouche, Miriam L. Zelditch, Richard Cloutier
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ea0173e05d1a429d8b1915e48f1c6564
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spelling	oai:doaj.org-article:ea0173e05d1a429d8b1915e48f1c65642021-12-02T16:07:52ZModularity promotes morphological divergence in ray-finned fishes10.1038/s41598-018-25715-y2045-2322https://doaj.org/article/ea0173e05d1a429d8b1915e48f1c65642018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25715-yhttps://doaj.org/toc/2045-2322Abstract Modularity is considered a prerequisite for the evolvability of biological systems. This is because in theory, individual modules can follow quasi-independent evolutionary trajectories or evolve at different rates compared to other aspects of the organism. This may influence the potential of some modules to diverge, leading to differences in disparity. Here, we investigated this relationship between modularity, rates of morphological evolution and disparity using a phylogenetically diverse sample of ray-finned fishes. We compared the support for multiple hypotheses of evolutionary modularity and asked if the partitions delimited by the best-fitting models were also characterized by the highest evolutionary rate differentials. We found that an evolutionary module incorporating the dorsal, anal and paired fins was well supported by the data, and that this module evolves more rapidly and consequently generates more disparity than other modules. This suggests that modularity may indeed promote morphological disparity through differences in evolutionary rates across modules.Olivier LaroucheMiriam L. ZelditchRichard CloutierNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-6 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Olivier Larouche Miriam L. Zelditch Richard Cloutier Modularity promotes morphological divergence in ray-finned fishes
description	Abstract Modularity is considered a prerequisite for the evolvability of biological systems. This is because in theory, individual modules can follow quasi-independent evolutionary trajectories or evolve at different rates compared to other aspects of the organism. This may influence the potential of some modules to diverge, leading to differences in disparity. Here, we investigated this relationship between modularity, rates of morphological evolution and disparity using a phylogenetically diverse sample of ray-finned fishes. We compared the support for multiple hypotheses of evolutionary modularity and asked if the partitions delimited by the best-fitting models were also characterized by the highest evolutionary rate differentials. We found that an evolutionary module incorporating the dorsal, anal and paired fins was well supported by the data, and that this module evolves more rapidly and consequently generates more disparity than other modules. This suggests that modularity may indeed promote morphological disparity through differences in evolutionary rates across modules.
format	article
author	Olivier Larouche Miriam L. Zelditch Richard Cloutier
author_facet	Olivier Larouche Miriam L. Zelditch Richard Cloutier
author_sort	Olivier Larouche
title	Modularity promotes morphological divergence in ray-finned fishes
title_short	Modularity promotes morphological divergence in ray-finned fishes
title_full	Modularity promotes morphological divergence in ray-finned fishes
title_fullStr	Modularity promotes morphological divergence in ray-finned fishes
title_full_unstemmed	Modularity promotes morphological divergence in ray-finned fishes
title_sort	modularity promotes morphological divergence in ray-finned fishes
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/ea0173e05d1a429d8b1915e48f1c6564
work_keys_str_mv	AT olivierlarouche modularitypromotesmorphologicaldivergenceinrayfinnedfishes AT miriamlzelditch modularitypromotesmorphologicaldivergenceinrayfinnedfishes AT richardcloutier modularitypromotesmorphologicaldivergenceinrayfinnedfishes
_version_	1718384690275024896

Modularity promotes morphological divergence in ray-finned fishes

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