Impact of Pleistocene Eustatic Fluctuations on Evolutionary Dynamics in Southeast Asian Biodiversity Hotspots
| العنوان: | Impact of Pleistocene Eustatic Fluctuations on Evolutionary Dynamics in Southeast Asian Biodiversity Hotspots |
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| المؤلفون: | Fabien L. Condamine, Lukas Rüber, Jean-Francçois Agnèse, Erwan Delrieu-Trottin, Nicolas Hubert, Arni Sholihah, Daisy Wowor, Laurent Pouyaud |
| المساهمون: | Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), School of life sciences and technology, Bandung, Institut Teknologi Bandung, Museum für Naturkunde [Berlin], Indonesian Institute of Sciences (LIPI), Naturhistorisches Museum [Bern], University of Bern, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Institut Teknologi Bandung (ITB) |
| المصدر: | Systematic Biology Systematic Biology, Oxford University Press (OUP), 2021, 70 (5), pp.940-960. ⟨10.1093/sysbio/syab006⟩ Systematic Biology, 2021, 70 (5), pp.940-960. ⟨10.1093/sysbio/syab006⟩ |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, diversification, Pleistocene, Allopatric speciation, Biodiversity, Fresh Water, [SDV.BID]Life Sciences [q-bio]/Biodiversity, Biology, Southeast asian, 010603 evolutionary biology, 01 natural sciences, 03 medical and health sciences, vicariance, eustatic fluctuations, Genetics, Vicariance, Animals, 14. Life underwater, Milankovitch cycles, Endemism, Ecology, Evolution, Behavior and Systematics, Ecosystem, Phylogeny, Ecology, Dispersal, Biological Evolution, Biodiversity hotspot, freshwater fishes, 030104 developmental biology, paleoenvironments, Biological dispersal, insular systems, [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
| الوصف: | Pleistocene climatic fluctuations (PCF) are frequently highlighted as important evolutionary engines that triggered cycles of biome expansion and contraction. Although there is ample evidence of the impact of PCF on biodiversity of continental biomes, the consequences in insular systems depend on the geology of the islands and the ecology of the taxa inhabiting them. The idiosyncratic aspects of insular systems are exemplified by the islands of the Sunda Shelf in Southeast Asia (Sundaland), where PCF-induced eustatic fluctuations had complex interactions with the geology of the region, resulting in high species diversity and endemism. Emergent land in Southeast Asia varied drastically with sea-level fluctuations during the Pleistocene. Climate-induced fluctuations in sea level caused temporary connections between insular and continental biodiversity hotspots in Southeast Asia. These exposed lands likely had freshwater drainage systems that extended between modern islands: the Paleoriver Hypothesis. Built upon the assumption that aquatic organisms are among the most suitable models to trace ancient river boundaries and fluctuations of landmass coverage, the present study aims to examine the evolutionary consequences of PCF on the dispersal of freshwater biodiversity in Southeast Asia. Time-calibrated phylogenies of DNA-delimited species were inferred for six species-rich freshwater fish genera in Southeast Asia (Clarias, Channa, Glyptothorax, Hemirhamphodon, Dermogenys, Nomorhamphus). The results highlight rampant cryptic diversity and the temporal localization of most speciation events during the Pleistocene, with 88% of speciation events occurring during this period. Diversification analyses indicate that sea-level-dependent diversification models poorly account for species proliferation patterns for all clades excepting Channa. Ancestral area estimations point to Borneo as the most likely origin for most lineages, with two waves of dispersal to Sumatra and Java during the last 5 myr. Speciation events are more frequently associated with boundaries of the paleoriver watersheds, with 60%, than islands boundaries, with 40%. In total, one-third of speciation events are inferred to have occurred within paleorivers on a single island, suggesting that habitat heterogeneity and factors other than allopatry between islands substantially affected diversification of Sundaland fishes. Our results suggest that species proliferation in Sundaland is not wholly reliant on Pleistocene sea-level fluctuations isolating populations on different islands. [Dispersal; diversification; eustatic fluctuations; freshwater fishes; insular systems; Milankovitch cycles; paleoenvironments; vicariance.] |
| تدمد: | 1076-836X 1063-5157 |
| DOI: | 10.1093/sysbio/syab006⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86304545811d7326c2eb2f6b070d31ec https://pubmed.ncbi.nlm.nih.gov/33560439 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....86304545811d7326c2eb2f6b070d31ec |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1076836X 10635157 |
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| DOI: | 10.1093/sysbio/syab006⟩ |