20.500.12556/DiRROS-19512 Biogeographical history of golden orbweavers chronology of a global conquest Aim A wholistic biogeographical reconstruction should combine a phylogeny with specifics of organismal biology, plate tectonics and consequent probabilities of historic dispersal events. Here, we demonstrate this approach by reconstructing the geographical origin and sequence of intercontinental colonization of the golden orbweaving spiders, a global clade. We test two alternative hypotheses about their ancestral range. Due to the highest contemporary species diversity in Africa, the ‘Out of Africa’ hypothesis predicts the Afrotropics as their most likely ancestral area. The alternative, ‘Out of West Burma’ hypothesis aims to explain a Burmese amber fossil as stem nephilid. Because the West Burma block probably detached from Australia, then rafted towards Laurasia, either on its own or with India, this hypothesis predicts either Australasia or Indomalaya (or both) as the ancestral area. Location Worldwide. Taxon Golden orbweaving spiders, family Nephilidae. Methods We construct an expanded phylogeny of nephilid spiders and apply RASP (Reconstruct Ancestral State in Phylogenies) to infer their global biogeographical history. We fit the data to six integrated biogeographical models: DEC, DIVALIKE, BAYAREALIKE and their +j variants. We fine-tune the analysis by evaluating varying probabilities of dispersal between geographical areas throughout the clade's evolutionary history. We use the physical distance between the areas as a proxy for dispersal probabilities, thus accounting for plate tectonics. Results The best supported model reconstructs both Australasia and Indomalaya as ancestral area. In several parts of the phylogeny, these areas persist for the estimated 130-million-year evolutionary history. However, numerous intercontinental shifts in nephilid biogeographical history are also inferred. Since nephilid origins are clearly Gondwanan, our study supports the interpretations that Burmese amber contains Gondwanan biota. Main conclusions These results are consistent with the Out of West Burma hypothesis but reject the Out of Africa hypothesis. That certain clades persist in their ancestral ranges while others may shift continents aligns well with the known nephilid biology. Our methodological approach that assesses organismal specific dispersal probabilities through concrete distances measured though time slices of the Earth's history can be applied to biogeographical reconstruction of any lineage. spiders golden orbweavers Nephilidae reconstruction of lineage biogeography pajki zlati mrežarji Nephilidae rekonstrukcija nasledstvene linije biogeografija true false true Angleški jezik Slovenski jezik Neznano 2024-07-19 03:42:11 2024-07-22 09:20:21 2024-07-23 03:55:51 0000-00-00 00:00:00 2020 0 0 str. 1333-1344 iss. 6 Vol. 47 June 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2020-06-01 595.44 0305-0270 10.1111/jbi.13838 13834243 RAZ_Turk_Eva_2020.pdf RAZ_Turk_Eva_2020.pdf 1 A7533CE5166CD2602CBAA4FB40A4510C 66e9820c19bdda62f6fdbb06b808758c07e736d258cc976ceb6fa7c71a3dc8ba 4ac6cd62-47ea-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27053 https://doi.org/10.1111/jbi.13838 0 5b115764-47ea-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27054 Nacionalni inštitut za biologijo 0 0 0