Disentangling the avian altricial‐precocial spectrum: Quantitative assessment of developmental mode, phylogenetic signal, and dimensionality.
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| Title: | Disentangling the avian altricial‐precocial spectrum: Quantitative assessment of developmental mode, phylogenetic signal, and dimensionality. |
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| Authors: | Ducatez, Simon1,2 (AUTHOR) simon.ducatez@gmail.com, Field, Daniel J.1,3 (AUTHOR) djf70@cam.ac.uk |
| Source: | Evolution. Nov2021, Vol. 75 Issue 11, p2717-2735. 19p. |
| Subjects: | Life history theory, Principal components analysis, Avian influenza |
| Abstract: | The altricial‐precocial spectrum describes patterns of variation in avian developmental mode that greatly influence avian life histories. Appraising a given species' position on this spectrum is therefore fundamental to understanding patterns of avian life history evolution. However, evaluating avian developmental mode remains a relatively subjective task reliant on untested assumptions, including the notion that developmental strategies are distributed along a single dimension of statistical variation. Here, we present a quantitative multivariate framework that objectively discriminates among meaningfully different modes of avian development. We gathered information on seven hatchling and post‐hatching traits for up to 4000 extant bird species, and find that most traits related to developmental mode show high phylogenetic signal and little intraclade variation, allowing unknown values to be reliably interpolated. Principal component analyses (PCAs) of these traits illustrate that most variation in hatchling state can be quantified along one dimension of trait space. However, our PCAs also reveal an important second dimension explaining variation in post‐hatching behavior, enabling factors related to hatchling state and post‐hatching behavior to be disentangled. In order to facilitate future macroevolutionary studies of variation in avian developmental strategies, as well as explorations of covariation between developmental mode and other aspects of avian biology, we present PC scores for 9993 extant avian species. [ABSTRACT FROM AUTHOR] |
| Copyright of Evolution is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 153731365 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Disentangling the avian altricial‐precocial spectrum: Quantitative assessment of developmental mode, phylogenetic signal, and dimensionality. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ducatez%2C+Simon%22">Ducatez, Simon</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> simon.ducatez@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Field%2C+Daniel+J%2E%22">Field, Daniel J.</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> djf70@cam.ac.uk</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Evolution%22">Evolution</searchLink>. Nov2021, Vol. 75 Issue 11, p2717-2735. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Life+history+theory%22">Life history theory</searchLink><br /><searchLink fieldCode="DE" term="%22Principal+components+analysis%22">Principal components analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Avian+influenza%22">Avian influenza</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The altricial‐precocial spectrum describes patterns of variation in avian developmental mode that greatly influence avian life histories. Appraising a given species' position on this spectrum is therefore fundamental to understanding patterns of avian life history evolution. However, evaluating avian developmental mode remains a relatively subjective task reliant on untested assumptions, including the notion that developmental strategies are distributed along a single dimension of statistical variation. Here, we present a quantitative multivariate framework that objectively discriminates among meaningfully different modes of avian development. We gathered information on seven hatchling and post‐hatching traits for up to 4000 extant bird species, and find that most traits related to developmental mode show high phylogenetic signal and little intraclade variation, allowing unknown values to be reliably interpolated. Principal component analyses (PCAs) of these traits illustrate that most variation in hatchling state can be quantified along one dimension of trait space. However, our PCAs also reveal an important second dimension explaining variation in post‐hatching behavior, enabling factors related to hatchling state and post‐hatching behavior to be disentangled. In order to facilitate future macroevolutionary studies of variation in avian developmental strategies, as well as explorations of covariation between developmental mode and other aspects of avian biology, we present PC scores for 9993 extant avian species. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Evolution is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/evo.14365 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 2717 Subjects: – SubjectFull: Life history theory Type: general – SubjectFull: Principal components analysis Type: general – SubjectFull: Avian influenza Type: general Titles: – TitleFull: Disentangling the avian altricial‐precocial spectrum: Quantitative assessment of developmental mode, phylogenetic signal, and dimensionality. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ducatez, Simon – PersonEntity: Name: NameFull: Field, Daniel J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 00143820 Numbering: – Type: volume Value: 75 – Type: issue Value: 11 Titles: – TitleFull: Evolution Type: main |
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