Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos
Island colonists are often assumed to experience higher levels of phenotypic diversification than continental taxa. However, empirical evidence has uncovered exceptions to this 'island effect'. Here, we tested this pattern using the geckos of the genus Pristurus from continental Arabia and Africa and the Socotra Archipelago. Using a recently published phylogeny and an extensive morphological dataset, we explore the differences in phenotypic evolution between Socotran and continental taxa. Moreover, we reconstructed ancestral habitat occupancy to examine if ecological specialization is correlated with morphological change, comparing phenotypic disparity and trait evolution between habitats. We found a heterogeneous outcome of island colonization. Namely, only one of the three colonization events resulted in a body size increase. However, in general, Socotran species do not present higher levels or rates of morphological diversification than continental groups. Instead, habitat specialization explains better the body size and shape evolution in Pristurus. Particularly, the colonization of ground habitats appears as the main driver of morphological change, producing the highest disparity and evolutionary rates. Additionally, arboreal species show very similar body size and head proportions. These results reveal a determinant role of ecological mechanisms in morphological evolution and corroborate the complexity of ecomorphological dynamics in continent-island systems.
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Royal Society (Great Britain)
2021-11-18
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Subjects: | Body size, Disparity, Evolutionary rate, Island colonization, Morphospace, Pristurus geckos, |
Online Access: | http://hdl.handle.net/10261/263494 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100002911 http://dx.doi.org/10.13039/501100002809 |
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Body size Disparity Evolutionary rate Island colonization Morphospace Pristurus geckos Body size Disparity Evolutionary rate Island colonization Morphospace Pristurus geckos |
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Body size Disparity Evolutionary rate Island colonization Morphospace Pristurus geckos Body size Disparity Evolutionary rate Island colonization Morphospace Pristurus geckos Tejero-Cicuéndez, Héctor Simó-Riudalbas, Marc Menéndez, Iris Carranza, Salvador Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
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Island colonists are often assumed to experience higher levels of phenotypic diversification than continental taxa. However, empirical evidence has uncovered exceptions to this 'island effect'. Here, we tested this pattern using the geckos of the genus Pristurus from continental Arabia and Africa and the Socotra Archipelago. Using a recently published phylogeny and an extensive morphological dataset, we explore the differences in phenotypic evolution between Socotran and continental taxa. Moreover, we reconstructed ancestral habitat occupancy to examine if ecological specialization is correlated with morphological change, comparing phenotypic disparity and trait evolution between habitats. We found a heterogeneous outcome of island colonization. Namely, only one of the three colonization events resulted in a body size increase. However, in general, Socotran species do not present higher levels or rates of morphological diversification than continental groups. Instead, habitat specialization explains better the body size and shape evolution in Pristurus. Particularly, the colonization of ground habitats appears as the main driver of morphological change, producing the highest disparity and evolutionary rates. Additionally, arboreal species show very similar body size and head proportions. These results reveal a determinant role of ecological mechanisms in morphological evolution and corroborate the complexity of ecomorphological dynamics in continent-island systems. |
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Ministerio de Ciencia, Innovación y Universidades (España) |
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Ministerio de Ciencia, Innovación y Universidades (España) Tejero-Cicuéndez, Héctor Simó-Riudalbas, Marc Menéndez, Iris Carranza, Salvador |
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Body size Disparity Evolutionary rate Island colonization Morphospace Pristurus geckos |
author |
Tejero-Cicuéndez, Héctor Simó-Riudalbas, Marc Menéndez, Iris Carranza, Salvador |
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Tejero-Cicuéndez, Héctor |
title |
Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
title_short |
Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
title_full |
Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
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Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
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Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
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ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos |
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Royal Society (Great Britain) |
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2021-11-18 |
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http://hdl.handle.net/10261/263494 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100002911 http://dx.doi.org/10.13039/501100002809 |
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AT tejerocicuendezhector ecologicalspecializationratherthantheislandeffectexplainsmorphologicaldiversificationinanancientradiationofgeckos AT simoriudalbasmarc ecologicalspecializationratherthantheislandeffectexplainsmorphologicaldiversificationinanancientradiationofgeckos AT menendeziris ecologicalspecializationratherthantheislandeffectexplainsmorphologicaldiversificationinanancientradiationofgeckos AT carranzasalvador ecologicalspecializationratherthantheislandeffectexplainsmorphologicaldiversificationinanancientradiationofgeckos |
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dig-ibe-es-10261-2634942022-11-03T10:39:53Z Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos Tejero-Cicuéndez, Héctor Simó-Riudalbas, Marc Menéndez, Iris Carranza, Salvador Ministerio de Ciencia, Innovación y Universidades (España) Ministerio de Economía y Competitividad (España) Generalitat de Catalunya Universidad Complutense de Madrid Body size Disparity Evolutionary rate Island colonization Morphospace Pristurus geckos Island colonists are often assumed to experience higher levels of phenotypic diversification than continental taxa. However, empirical evidence has uncovered exceptions to this 'island effect'. Here, we tested this pattern using the geckos of the genus Pristurus from continental Arabia and Africa and the Socotra Archipelago. Using a recently published phylogeny and an extensive morphological dataset, we explore the differences in phenotypic evolution between Socotran and continental taxa. Moreover, we reconstructed ancestral habitat occupancy to examine if ecological specialization is correlated with morphological change, comparing phenotypic disparity and trait evolution between habitats. We found a heterogeneous outcome of island colonization. Namely, only one of the three colonization events resulted in a body size increase. However, in general, Socotran species do not present higher levels or rates of morphological diversification than continental groups. Instead, habitat specialization explains better the body size and shape evolution in Pristurus. Particularly, the colonization of ground habitats appears as the main driver of morphological change, producing the highest disparity and evolutionary rates. Additionally, arboreal species show very similar body size and head proportions. These results reveal a determinant role of ecological mechanisms in morphological evolution and corroborate the complexity of ecomorphological dynamics in continent-island systems. This work was supported by grants CGL2015-70390-P (MINECO/FEDER, UE) and PGC2018-098290-B-I00 (MCIU/AEI/FEDER, UE), Spain and grant no. 2017-SGR-00991 from the Secretaria d'Universitats i Recerca del Departament d'Economia i Coneixement de la Generalitat de Catalunya to S.C. H.T.-C. was funded by an FPI grant no. (BES-2016-078341) (MINECO/AEI/FSE), Spain. I.M. was funded by a predoctoral grant from the Complutense University of Madrid (CT27/16-CT28/16), Spain, and the project PGC2018-094955-A-I00 from the Spanish Ministry of Science and Innovation. M.S.-R. was funded by an FPI grant no. (BES-2013-064248) (MINECO/AEI/FSE), Spain. 2022-03-09T12:10:17Z 2022-03-09T12:10:17Z 2021-11-18 2022-03-09T12:10:17Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1098/rspb.2021.1821 issn: 1471-2954 Proceedings of the Royal Society of London - B 288: 1965 (2021) http://hdl.handle.net/10261/263494 10.1098/rspb.2021.1821 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100002911 http://dx.doi.org/10.13039/501100002809 #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-098290-B-I00/ES/LAS MONTAÑAS DE LOS HAJARS DEL SURESTE DE ARABIA: UN LABORATORIO PARA ENTENDER COMO LA BIODIVERSIDAD SE GENERA Y SE MANTIENE Y COMO CONSERVARLA/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-094955-A-I00/ES/COMPARACION MULTIDISCIPLINAR INTER-HEMISFERIO: ESTUDIO BIOGEOQUIMICO Y PALEOBIOLOGICO COMBINADO DEL REGISTRO FOSIL ESPAÑOL Y ARGENTINO EN EL CENOZOICO FINAL/ Postprint Tejero-Cicuéndez, Héctor; Simó-Riudalbas, Marc; Menéndez, Iris; Carranza, Salvador; 2021; Data from: Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos [Dataset]; Dryad; Version 3; https://doi.org/10.5061/dryad.xwdbrv1f6 Tejero-Cicuéndez, Héctor; Simó-Riudalbas, Marc; Menéndez, Iris; Carranza, Salvador; 2021; Data from: Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos [Software]; Zenodo; Version 1; https://doi.org/10.5281/zenodo.5573999 Tejero-Cicuéndez, Héctor; Simó-Riudalbas, Marc; Menéndez, Iris; Carranza, Salvador; 2021; Data from: Ecological specialization, rather than the island effect, explains morphological diversification in an ancient radiation of geckos [Dataset]; Zenodo; Version 1; https://doi.org/10.5281/zenodo.5574001 http://doi.org/10.1098/rspb.2021.1821 Sí none Royal Society (Great Britain) |