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https://hdl.handle.net/1959.11/30168
Title: | Past and future sky-island dynamics of tropical mountains: A model for two Geotrupes (Coleoptera: Geotrupidae) species in Oaxaca, Mexico | Contributor(s): | Arriaga-Jiménez, Alfonsina (author) ; Kohlmann, Bert (author); Vásquez-Selem, Lorenzo (author); Umaña, Yhenner (author); Rös, Matthias (author) | Publication Date: | 2020-10 | Early Online Version: | 2020-06-17 | DOI: | 10.1177/0959683620932977 | Handle Link: | https://hdl.handle.net/1959.11/30168 | Abstract: | Recent collecting and taxonomic studies of dung beetles of the genus Geotrupes Latreille (Coleoptera: Geotrupidae) in the mountains of Oaxaca have evidenced the existence of a vicariant speciation pattern, where one species occupies the northern mountain system and the other one the southern mountain range. A study of this possible vicariant speciation mechanism is presented using a paleobiogeographic mapping analysis of both Geotrupes species distribution during Late Quaternary glaciation events. Based on these paleomaps a possible speciation mechanism (vicariant speciation) is suggested, in which one common ancestor (mother species) lived at the bottom of the Valle de Oaxaca (Oaxaca Valley) during the last local glacial maximum (LLGM, 21-17.5 kyr) and whose possible continuous distribution was broken into two (or more) separated areas on mountaintops as the climate became warmer toward the present. We propose that the fragmentation and isolation of habitats may have promoted genetic differentiation of populations resulting in vicariant speciation, as suggested by a sky-island dynamic process. The example of a possible effect of the Little Ice Age in the mountains of Oaxaca is also discussed. Finally, a projection is made into the XXII century, based on climatic modeling predictions. These last results suggest the possible disappearance of the sky-island dynamic process through the accelerated speed of climatic change. | Publication Type: | Journal Article | Source of Publication: | The Holocene, 30(10), p. 1462-1470 | Publisher: | Sage Publications Ltd | Place of Publication: | United Kingdom | ISSN: | 1477-0911 0959-6836 |
Fields of Research (FoR) 2008: | 060208 Terrestrial Ecology | Fields of Research (FoR) 2020: | 310308 Terrestrial ecology 310913 Invertebrate biology |
Socio-Economic Objective (SEO) 2008: | 970105 Expanding Knowledge in the Environmental Sciences | Socio-Economic Objective (SEO) 2020: | 280111 Expanding knowledge in the environmental sciences | Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Environmental and Rural Science |
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