Developmental instability and phenotypic evolution in a small and isolated bear population
We explored fluctuating asymmetry (FA) and morphological integration (MI) in the skull of the small, highly inbred and divergent Apennine bear (Ursus arctos marsicanus), to explore its uniqueness and investigate any potential effects of inbreeding depression. We used 3d geometric morphometrics contr...
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ftzenodo:oai:zenodo.org:4670179 2024-09-09T19:49:25+00:00 Developmental instability and phenotypic evolution in a small and isolated bear population Loy, Anna Ciucci, Paolo Guidarelli, Giulia Roccotelli, Erika Colangelo, Paolo 2021-04-07 https://doi.org/10.5061/dryad.1c59zw3t6 unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.1c59zw3t6 oai:zenodo.org:4670179 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Ursus arctos marsicanus fluctuating asymmetry 3D geometric morphometrics inbreeding depression morphological integration small populations info:eu-repo/semantics/other 2021 ftzenodo https://doi.org/10.5061/dryad.1c59zw3t6 2024-07-26T05:02:42Z We explored fluctuating asymmetry (FA) and morphological integration (MI) in the skull of the small, highly inbred and divergent Apennine bear (Ursus arctos marsicanus), to explore its uniqueness and investigate any potential effects of inbreeding depression. We used 3d geometric morphometrics contrasting 17 Apennine bears with other two large outbred bear populations (22 from Scandinavia and 9 from Kamchatka) as controls. Shape divergence and variability were explored by a PCA on aligned coordinates of 39 landmarks. Procrustes ANOVA, morphological disparity, and the Global Integration (GI) index were performed both to detect FA and to quantify shape variance and degree of MI. By remarking that Apennine bears share a highly divergent phenotype, we recorded the highest FA and deviation from self-similarity compared to the other two control populations. We conclude that Apennine bears are likely facing developmental instability as a consequence of inbreeding depression, whereas the divergent trait covariance pattern may represent a potential source of evolutionary novelties. We discuss the implications for the conservation and management of this imperiled taxon. Rscript, landmark coordinates: marsicano3D.csv # raw landmark coordinates Loy_et_al_Rcode.R #R code for GMM analysis Land.symm.csv # matrix containing matched pairs of symmetric landmarks orsolinks.csv # matrix defining links between landmarks Other/Unknown Material Kamchatka Ursus arctos Zenodo |
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Ursus arctos marsicanus fluctuating asymmetry 3D geometric morphometrics inbreeding depression morphological integration small populations |
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Ursus arctos marsicanus fluctuating asymmetry 3D geometric morphometrics inbreeding depression morphological integration small populations Loy, Anna Ciucci, Paolo Guidarelli, Giulia Roccotelli, Erika Colangelo, Paolo Developmental instability and phenotypic evolution in a small and isolated bear population |
topic_facet |
Ursus arctos marsicanus fluctuating asymmetry 3D geometric morphometrics inbreeding depression morphological integration small populations |
description |
We explored fluctuating asymmetry (FA) and morphological integration (MI) in the skull of the small, highly inbred and divergent Apennine bear (Ursus arctos marsicanus), to explore its uniqueness and investigate any potential effects of inbreeding depression. We used 3d geometric morphometrics contrasting 17 Apennine bears with other two large outbred bear populations (22 from Scandinavia and 9 from Kamchatka) as controls. Shape divergence and variability were explored by a PCA on aligned coordinates of 39 landmarks. Procrustes ANOVA, morphological disparity, and the Global Integration (GI) index were performed both to detect FA and to quantify shape variance and degree of MI. By remarking that Apennine bears share a highly divergent phenotype, we recorded the highest FA and deviation from self-similarity compared to the other two control populations. We conclude that Apennine bears are likely facing developmental instability as a consequence of inbreeding depression, whereas the divergent trait covariance pattern may represent a potential source of evolutionary novelties. We discuss the implications for the conservation and management of this imperiled taxon. Rscript, landmark coordinates: marsicano3D.csv # raw landmark coordinates Loy_et_al_Rcode.R #R code for GMM analysis Land.symm.csv # matrix containing matched pairs of symmetric landmarks orsolinks.csv # matrix defining links between landmarks |
format |
Other/Unknown Material |
author |
Loy, Anna Ciucci, Paolo Guidarelli, Giulia Roccotelli, Erika Colangelo, Paolo |
author_facet |
Loy, Anna Ciucci, Paolo Guidarelli, Giulia Roccotelli, Erika Colangelo, Paolo |
author_sort |
Loy, Anna |
title |
Developmental instability and phenotypic evolution in a small and isolated bear population |
title_short |
Developmental instability and phenotypic evolution in a small and isolated bear population |
title_full |
Developmental instability and phenotypic evolution in a small and isolated bear population |
title_fullStr |
Developmental instability and phenotypic evolution in a small and isolated bear population |
title_full_unstemmed |
Developmental instability and phenotypic evolution in a small and isolated bear population |
title_sort |
developmental instability and phenotypic evolution in a small and isolated bear population |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://doi.org/10.5061/dryad.1c59zw3t6 |
genre |
Kamchatka Ursus arctos |
genre_facet |
Kamchatka Ursus arctos |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.1c59zw3t6 oai:zenodo.org:4670179 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.1c59zw3t6 |
_version_ |
1809918812550594560 |