Ecomorphometric Analysis of Diversity in Cranial Shape of Pygopodid Geckos
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Gurgis, G P; Daza, Juan D.; Brennan, Ian; Hutchinson, Mark; Bauer, Aaron M; Stocker, Michelle R.; Olori, J C
Description
Pygopodids are elongate, functionally limbless geckos found throughout Australia. The clade presents low taxonomic diversity (∼45 spp.), but a variety of cranial morphologies, habitat use, and locomotor abilities that vary between and within genera. In order to assess potential relationships between cranial morphology and ecology, computed tomography scans of 29 species were used for 3D geometric morphometric analysis. A combination of 24 static landmarks and 20 sliding semi-landmarks were...[Show more]
dc.contributor.author | Gurgis, G P | |
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dc.contributor.author | Daza, Juan D. | |
dc.contributor.author | Brennan, Ian | |
dc.contributor.author | Hutchinson, Mark | |
dc.contributor.author | Bauer, Aaron M | |
dc.contributor.author | Stocker, Michelle R. | |
dc.contributor.author | Olori, J C | |
dc.date.accessioned | 2022-11-13T22:55:16Z | |
dc.date.available | 2022-11-13T22:55:16Z | |
dc.identifier.issn | 2517-4843 | |
dc.identifier.uri | http://hdl.handle.net/1885/278804 | |
dc.description.abstract | Pygopodids are elongate, functionally limbless geckos found throughout Australia. The clade presents low taxonomic diversity (∼45 spp.), but a variety of cranial morphologies, habitat use, and locomotor abilities that vary between and within genera. In order to assess potential relationships between cranial morphology and ecology, computed tomography scans of 29 species were used for 3D geometric morphometric analysis. A combination of 24 static landmarks and 20 sliding semi-landmarks were subjected to Generalized Procrustes Alignment. Disparity in cranial shape was visualized through Principal Component Analysis, and a multivariate analysis of variance (MANOVA) was used to test for an association between shape, habitat, and diet. A subset of 27 species with well-resolved phylogenetic relationships was used to generate a phylomorphospace and conduct phylogeny-corrected MANOVA. Similar analyses were done solely on Aprasia taxa to explore species-level variation. Most of the variation across pygopodids was described by principal component (PC) 1(54%: Cranial roof width, parabasisphenoid, and occipital length), PC2 (12%: Snout elongation and braincase width), and PC3 (6%: Elongation and shape of the palate and rostrum). Without phylogenetic correction, both habitat and diet were significant influencers of variation in cranial morphology. However, in the phylogeny-corrected MANOVA, habitat remained weakly significant, but not diet, which can be explained by genericlevel differences in ecology rather than among species. Our results demonstrate that at higher levels, phylogeny has a strong effect on morphology, but that influence may be due to small sample size when comparing genera. However, because some closely related taxa occupy distant regions of morphospace, diverging diets, and use of fossorial habitats may contribute to variation seen in these geckos. | |
dc.description.sponsorship | This work was supported by SUNY Oswego RISE (to G.G.) and the U.S. National Science Foundation (grant number DEB 1655610 to J.C.O and M.R.S.). | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_AU | |
dc.publisher | Oxford University Press | |
dc.rights | © The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Integrative and Comparative Biology. | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Integrative Organismal Biology | |
dc.title | Ecomorphometric Analysis of Diversity in Cranial Shape of Pygopodid Geckos | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 3 | |
dc.date.issued | 2021 | |
local.identifier.absfor | 310301 - Behavioural ecology | |
local.identifier.ariespublication | a383154xPUB22261 | |
local.publisher.url | https://academic.oup.com/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Gurgis, G P, State University of New York | |
local.contributor.affiliation | Daza, Juan D., Sam Houston State University | |
local.contributor.affiliation | Brennan, Ian, College of Science, ANU | |
local.contributor.affiliation | Hutchinson, Mark, South Australian Museum | |
local.contributor.affiliation | Bauer, Aaron M, Villanova University | |
local.contributor.affiliation | Stocker, Michelle R., Virginia Tech | |
local.contributor.affiliation | Olori, J C, State University of New York | |
local.bibliographicCitation.issue | 1 | |
local.bibliographicCitation.startpage | 1 | |
local.bibliographicCitation.lastpage | 17 | |
local.identifier.doi | 10.1093/iob/obab013 | |
local.identifier.absseo | 280102 - Expanding knowledge in the biological sciences | |
dc.date.updated | 2021-11-28T07:27:27Z | |
local.identifier.scopusID | 2-s2.0-85109189262 | |
dcterms.accessRights | Open Access | |
dc.provenance | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. | |
dc.rights.license | Creative Commons Attribution License | |
Collections | ANU Research Publications |
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