Impact of geoclimatic events on the diversifcation of newly defned Megelenophorini (Coleoptera: Tenebrionidae) in South America
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| Title: | Main Title: Impact of geoclimatic events on the diversifcation of newly defned Megelenophorini (Coleoptera: Tenebrionidae) in South America |
| Description: | Abstract: The uplift of Andes caused fundamental geomorphological and climatic changes in South America and had a strong impact on the continent’s biodiversity, especially in arid regions west of the Cordillera such as the Atacama Desert. With the fading of the main uplift phase of the Central Andes, global climate change since then affected the region fundamentally. This complex geoclimatic history provides a suitable scenario to study how organisms diversify and to investigate the effects of major forcing factors such as climate or tectonics on biological evolution. We used desert beetles of the tribe Elenophorini (Coleoptera: Tenebrionidae) to obtain insights into driving forces that were responsible for diversification under such extreme and unstable conditions in arid environments. Elenophorini comprises only three genera: Leptoderis from southern Europe, together with Psammetichus and Megelenophorus from South America, suggesting an ancient origin of this tribe. The monotypic Megelenophorus, one of the largest tenebrionid beetles in South America, is restricted to a region east of the Andes in northwestern and central Argentina. The thirteen described species of Psammetichus are distributed west of the Andes in the deserts of Peru and Chile. We performed a phylogenetic analysis including all known species of Elenophorini and subsequently reconstructed the biogeographical history of the South American members. The results suggest that Elenophorini is not a monophyletic group. We, therefore, propose to raise the subtribe Megelenophorina established for Psammetichus and Megelenophorus to its own tribe: Megelenophorini. The diversifcation of Megelenophorini started around 4.9 Ma. This separation of the common ancestor of Psammetichus and Megelenophorus could be related to the global climate cooling in the early Pliocene, which first affected the high altitude habitats in the Andean mountains, already above 3000 m.a.s.l. in the study area at that time. The subsequent emergence of five species groups in Psammetichus can be related to hyperarid periods in the Atacama Desert between 4 and 2 Ma. Speciation within these groups was accelerated during the Mid-Pleistocene Transition (<1 Ma), possibly due to high amplitude climate fluctuations. |
Responsible Party
| Creators: | Alvaro Zúñiga-Reinoso (Author), Daniela Mardones (Author), Benedikt Ritter (Author), Gustavo Flores (Author), Alfredo Giraldo (Author), Reinhard Predel (Author) |
| Publisher: | Elseiver |
| Publication Year: | 2023 |
Topic
| CRC1211 Topic: | Biology |
| Related Subproject: | B2 |
| Subjects: | Keywords: Evolution, Biodiversity, Arid Zone, Biogeography |
| Geogr. Information Topic: | Biota |
File Details
| Filename: | Zuniga-Reinoso_etal.2023.pdf |
| Data Type: | Text - Article |
| File Size: | 8.9 MB |
| Date: | Available: 23.08.2023 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | None |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Global and Planetary Change |
| Volume: | 228 |
| Number of Pages: | 1 (32767 - 32767) |
Metadata Details
| Metadata Creator: | Alvaro Zúñiga |
| Metadata Created: | 03.11.2023 |
| Metadata Last Updated: | 03.11.2023 |
| Subproject: | B2 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 31 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 0 |
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