Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots

Abstract Background Trophic shifts from one dietary niche to another have played major roles in reshaping the evolutionary trajectories of a wide range of vertebrate groups, yet their consequences for morphological disparity and species diversity differ among groups. Methods Here, we use phylogeneti...

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Autores principales:	Vicente García-Navas, Joseph A. Tobias, Manuel Schweizer, Daniel Wegmann, Richard Schodde, Janette A. Norman, Les Christidis
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Adaptive landscape Beak morphology Diet Ecomorphology Evolutionary jump Feeding ecology Ecology QH540-549.5 Evolution QH359-425
Acceso en línea:	https://doaj.org/article/c14bc382d2b94822acd159efd1fa55d6
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spelling	oai:doaj.org-article:c14bc382d2b94822acd159efd1fa55d62021-11-28T12:04:10ZTrophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots10.1186/s12862-021-01940-42730-7182https://doaj.org/article/c14bc382d2b94822acd159efd1fa55d62021-11-01T00:00:00Zhttps://doi.org/10.1186/s12862-021-01940-4https://doaj.org/toc/2730-7182Abstract Background Trophic shifts from one dietary niche to another have played major roles in reshaping the evolutionary trajectories of a wide range of vertebrate groups, yet their consequences for morphological disparity and species diversity differ among groups. Methods Here, we use phylogenetic comparative methods to examine whether the evolution of nectarivory and other trophic shifts have driven predictable evolutionary pathways in Australasian psittaculid parrots in terms of ecological traits such as body size, beak shape, and dispersal capacity. Results We found no evidence for an ‘early-burst’ scenario of lineage or morphological diversification. The best-fitting models indicate that trait evolution in this group is characterized by abrupt phenotypic shifts (evolutionary jumps), with no sign of multiple phenotypic optima correlating with different trophic strategies. Thus, our results point to the existence of weak directional selection and suggest that lineages may be evolving randomly or slowly toward adaptive peaks they have not yet reached. Conclusions This study adds to a growing body of evidence indicating that the relationship between avian morphology and feeding ecology may be more complex than usually assumed and highlights the importance of adding more flexible models to the macroevolutionary toolbox.Vicente García-NavasJoseph A. TobiasManuel SchweizerDaniel WegmannRichard SchoddeJanette A. NormanLes ChristidisBMCarticleAdaptive landscapeBeak morphologyDietEcomorphologyEvolutionary jumpFeeding ecologyEcologyQH540-549.5EvolutionQH359-425ENBMC Ecology and Evolution, Vol 21, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Adaptive landscape Beak morphology Diet Ecomorphology Evolutionary jump Feeding ecology Ecology QH540-549.5 Evolution QH359-425
spellingShingle	Adaptive landscape Beak morphology Diet Ecomorphology Evolutionary jump Feeding ecology Ecology QH540-549.5 Evolution QH359-425 Vicente García-Navas Joseph A. Tobias Manuel Schweizer Daniel Wegmann Richard Schodde Janette A. Norman Les Christidis Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots
description	Abstract Background Trophic shifts from one dietary niche to another have played major roles in reshaping the evolutionary trajectories of a wide range of vertebrate groups, yet their consequences for morphological disparity and species diversity differ among groups. Methods Here, we use phylogenetic comparative methods to examine whether the evolution of nectarivory and other trophic shifts have driven predictable evolutionary pathways in Australasian psittaculid parrots in terms of ecological traits such as body size, beak shape, and dispersal capacity. Results We found no evidence for an ‘early-burst’ scenario of lineage or morphological diversification. The best-fitting models indicate that trait evolution in this group is characterized by abrupt phenotypic shifts (evolutionary jumps), with no sign of multiple phenotypic optima correlating with different trophic strategies. Thus, our results point to the existence of weak directional selection and suggest that lineages may be evolving randomly or slowly toward adaptive peaks they have not yet reached. Conclusions This study adds to a growing body of evidence indicating that the relationship between avian morphology and feeding ecology may be more complex than usually assumed and highlights the importance of adding more flexible models to the macroevolutionary toolbox.
format	article
author	Vicente García-Navas Joseph A. Tobias Manuel Schweizer Daniel Wegmann Richard Schodde Janette A. Norman Les Christidis
author_facet	Vicente García-Navas Joseph A. Tobias Manuel Schweizer Daniel Wegmann Richard Schodde Janette A. Norman Les Christidis
author_sort	Vicente García-Navas
title	Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots
title_short	Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots
title_full	Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots
title_fullStr	Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots
title_full_unstemmed	Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots
title_sort	trophic niche shifts and phenotypic trait evolution are largely decoupled in australasian parrots
publisher	BMC
publishDate	2021
url	https://doaj.org/article/c14bc382d2b94822acd159efd1fa55d6
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Trophic niche shifts and phenotypic trait evolution are largely decoupled in Australasian parrots

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