New insights into the origin of the Galápagos tortoises with a tip-dated analysis of TestudinidaeCitation for this article: Torres, F., Huang, E. J., Román-Carrion, J. L., &amp; Bever, G. S. (2024) New insights into the origin of the Galápagos tortoises with a tip-dated analysis of Testudinidae.
            <i>Journal of Vertebrate Paleontology</i>
            . https://doi.org/10.1080/02724634.2024.2313615

Torres, Fernando; Huang, E. J.; Román-Carrion, José Luis; Bever, Gabriel S.

doi:10.1080/02724634.2024.2313615

Journal of Vertebrate Paleontology

2023

DOI: 10.1080/02724634.2024.2313615

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New insights into the origin of the Galápagos tortoises with a tip-dated analysis of TestudinidaeCitation for this article: Torres, F., Huang, E. J., Román-Carrion, J. L., & Bever, G. S. (2024) New insights into the origin of the Galápagos tortoises with a tip-dated analysis of Testudinidae. Journal of Vertebrate Paleontology . https://doi.org/10.1080/02724634.2024.2313615

Fernando Torres,

E. J. Huang,

José Luis Román-Carrion

et al.

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Cited by 2 publications

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Galapagos giant tortoises were supersized before arrival

2024

Nature

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Galapagos giant tortoises were supersized before arrival

2024

Nature

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Colonization record of the Galápagos’ vertebrate clades: Biogeographical issues plus a conservation insight

Ali,

Fritz

2024

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Our focus is the colonization history of the Galápagos’ vertebrate clades: 11 land-bound groups (eight reptiles, three rodents) and 13 taxa of flyers and swimmers (ten winged birds, two pinnipeds, one penguin). Using ‘colonization intervals’ and ‘colonization profiles’, it is clear that the two sets of taxa assembled very differently. The former includes older clades with between one, and potentially eight, predating the emergence of the oldest island (4 Mya). For the origin of some lineages, now-sunken landmasses associated with the Galápagos mantle-plume hotspot must have been involved, but for others it could reflect taxonomic uncertainties. In contrast, the taxa of flyers and swimmers are markedly younger, indicating either higher rates of colonization and extirpation for these sorts of animal, or continued genetic influx from mainland populations, or some combination of both factors. Concerning the first, possible drivers are the environmental stressors associated with the El Niño–La Niña climate system; the recent clades may be vulnerable to extreme events within the oscillation sequence, perhaps on ≥104-year timescales. Therefore, loose temporal thresholds might exist for the archipelago’s vertebrate groups beyond which selection fortifies them from the most challenging of seasonal states. Moreover, in a world of climate uncertainty, the findings appear relevant to conservation initiatives suggesting a focusing on the younger elements within the Galápagos’ biota.

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Cited by 2 publications

References 51 publications

Galapagos giant tortoises were supersized before arrival

Galapagos giant tortoises were supersized before arrival

Colonization record of the Galápagos’ vertebrate clades: Biogeographical issues plus a conservation insight

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