Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae): evidence of beetle extinction in the Pleistocene–Holocene transition in Chilean Northern Patagonia
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Título: | Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae): evidence of beetle extinction in the Pleistocene–Holocene transition in Chilean Northern Patagonia |
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Autor/es: | Tello, Francisco | Verdú, José R. | Rossini, Michele | Zunino, Mario |
Grupo/s de investigación o GITE: | Biodiversidad y Biotecnología aplicadas a la Biología de la Conservación |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales |
Palabras clave: | Dung beetle | Extinction | Fossil beetles | New species | Pleistocene | South America |
Área/s de conocimiento: | Zoología |
Fecha de publicación: | 15-jun-2021 |
Editor: | Pensoft Publishers |
Cita bibliográfica: | ZooKeys. 2021, 1043: 133-145. https://doi.org/10.3897/zookeys.1043.61706 |
Resumen: | The South American Pleistocene–Holocene transition has been characterized by drastic climatic and diversity changes. These rapid changes induced one of the largest and most recent extinctions in the megafauna at the continental scale. However, examples of the extinction of small animals (e.g., insects) are scarce, and the underlying causes of the extinction have been little studied. In this work, a new extinct dung beetle species is described from a late Pleistocene sequence (~15.2 k cal yr BP) at the paleoarcheological site Pilauco, Chilean Northern Patagonia. Based on morphological characters, this fossil is considered to belong to the genus Onthophagus Latreille, 1802 and named Onthophagus pilauco sp. nov. We carried out a comprehensive revision of related groups, and we analyzed the possible mechanism of diversification and extinction of this new species. We hypothesize that Onthophagus pilauco sp. nov. diversified as a member of the osculatii species-complex following migration processes related to the Great American Biotic Interchange (~3 Ma). The extinction of O. pilauco sp. nov. may be related to massive defaunation and climatic changes recorded in the Plesitocene-Holocene transition (12.8 k cal yr BP). This finding is the first record of this genus in Chile, and provides new evidence to support the collateral-extinction hypothesis related to the defaunation. |
Patrocinador/es: | FT was supported by CONICYT doctoral scholarship Grant #21171980 and Ilustre Municipalidad de Osorno, Osorno, Chile. |
URI: | http://hdl.handle.net/10045/116354 |
ISSN: | 1313-2989 (Print) | 1313-2970 (Online) |
DOI: | 10.3897/zookeys.1043.61706 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2021 Francisco Tello, José R. Verdú, Michele Rossini, Mario Zunino. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3897/zookeys.1043.61706 |
Aparece en las colecciones: | INV - BBaBC - Artículos de Revistas |
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