On the predictability of phenotypic divergence in geographic isolation.
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| Title: | On the predictability of phenotypic divergence in geographic isolation. |
|---|---|
| Authors: | Freeman, Benjamin G1 (AUTHOR) freeman@zoology.ubc.ca, Montgomery, Graham A2 (AUTHOR), Heavyside, Julian1 (AUTHOR), Moncrieff, Andre E3 (AUTHOR), Johnson, Oscar3 (AUTHOR), Winger, Benjamin M4 (AUTHOR) |
| Source: | Evolution. Jan2023, Vol. 77 Issue 1, p26-35. 10p. |
| Subjects: | Phenotypes, Genetic distance, Forest birds, Reproductive isolation, Genetic variation, Plant dispersal |
| Abstract: | Do related populations that are separated by barriers predictably evolve differences from one another over time, or is such divergence idiosyncratic and unpredictable? We test these alternatives by investigating patterns of trait evolution for 54 sister pairs of Andean forest birds that live in similar environments on either side of the arid Marañón Gap, a strong dispersal barrier for humid montane species. We measured divergence in both sexual (song and plumage) and ecological (beak size and beak shape) traits. Sexual traits evolve in a clock-like fashion, with trait divergence positively correlated with genetic distance (r = 0.6–0.7). In contrast, divergence in ecological traits is uncorrelated or only loosely correlated with genetic distance (r = 0.0–0.3). Thus, for geographically isolated Andean montane forest birds that live in similar environments, divergence is predictable in sexual traits, but not for ecological traits. This means that sexual trait divergence occurs independently of adaptive ecological divergence within the mega-diverse tropical Andean avifauna. Last, we show that variation in genetic divergence across a biogeographic barrier is associated with traits that are proxies for species' opportunities for dispersal (low elevation limit and elevational niche breadth), but not with traits that are proxies for species' dispersal abilities (hand-wing index and foraging strata). [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: 164202976 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: On the predictability of phenotypic divergence in geographic isolation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Freeman%2C+Benjamin+G%22">Freeman, Benjamin G</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> freeman@zoology.ubc.ca</i><br /><searchLink fieldCode="AR" term="%22Montgomery%2C+Graham+A%22">Montgomery, Graham A</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Heavyside%2C+Julian%22">Heavyside, Julian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Moncrieff%2C+Andre+E%22">Moncrieff, Andre E</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Johnson%2C+Oscar%22">Johnson, Oscar</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Winger%2C+Benjamin+M%22">Winger, Benjamin M</searchLink><relatesTo>4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Evolution%22">Evolution</searchLink>. Jan2023, Vol. 77 Issue 1, p26-35. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Phenotypes%22">Phenotypes</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+distance%22">Genetic distance</searchLink><br /><searchLink fieldCode="DE" term="%22Forest+birds%22">Forest birds</searchLink><br /><searchLink fieldCode="DE" term="%22Reproductive+isolation%22">Reproductive isolation</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+variation%22">Genetic variation</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+dispersal%22">Plant dispersal</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Do related populations that are separated by barriers predictably evolve differences from one another over time, or is such divergence idiosyncratic and unpredictable? We test these alternatives by investigating patterns of trait evolution for 54 sister pairs of Andean forest birds that live in similar environments on either side of the arid Marañón Gap, a strong dispersal barrier for humid montane species. We measured divergence in both sexual (song and plumage) and ecological (beak size and beak shape) traits. Sexual traits evolve in a clock-like fashion, with trait divergence positively correlated with genetic distance (r = 0.6–0.7). In contrast, divergence in ecological traits is uncorrelated or only loosely correlated with genetic distance (r = 0.0–0.3). Thus, for geographically isolated Andean montane forest birds that live in similar environments, divergence is predictable in sexual traits, but not for ecological traits. This means that sexual trait divergence occurs independently of adaptive ecological divergence within the mega-diverse tropical Andean avifauna. Last, we show that variation in genetic divergence across a biogeographic barrier is associated with traits that are proxies for species' opportunities for dispersal (low elevation limit and elevational niche breadth), but not with traits that are proxies for species' dispersal abilities (hand-wing index and foraging strata). [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: 10.1093/evolut/qpac040 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 26 Subjects: – SubjectFull: Phenotypes Type: general – SubjectFull: Genetic distance Type: general – SubjectFull: Forest birds Type: general – SubjectFull: Reproductive isolation Type: general – SubjectFull: Genetic variation Type: general – SubjectFull: Plant dispersal Type: general Titles: – TitleFull: On the predictability of phenotypic divergence in geographic isolation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Freeman, Benjamin G – PersonEntity: Name: NameFull: Montgomery, Graham A – PersonEntity: Name: NameFull: Heavyside, Julian – PersonEntity: Name: NameFull: Moncrieff, Andre E – PersonEntity: Name: NameFull: Johnson, Oscar – PersonEntity: Name: NameFull: Winger, Benjamin M IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 00143820 Numbering: – Type: volume Value: 77 – Type: issue Value: 1 Titles: – TitleFull: Evolution Type: main |
| ResultId | 1 |
