title: Paleo-drainage basin connectivity predicts evolutionary relationships across three Southeast Asian biodiversity hotspots.
abstract: Understanding factors driving diversity across biodiversity hotspots is critical for formulating conservation priorities in the face of ongoing and escalating environmental deterioration. While biodiversity hotspots encompass a small fraction of Earth's land surface, more than half the world's plants and two-thirds of terrestrial vertebrate species are endemic to these hotspots. Tropical Southeast (SE) Asia displays extraordinary species richness, encompassing four biodiversity hotspots, though disentangling multiple potential drivers of species richness is confounded by the region's dynamic geological and climatic history. Here, we use multilocus molecular genetic data from dense multispecies sampling of freshwater fishes across three biodiversity hotspots, to test the effect of Quaternary climate change and resulting drainage rearrangements on aquatic faunal diversification. While Cenozoic geological processes have clearly shaped evolutionary history in SE Asian halfbeak fishes, we show that paleo-drainage re-arrangements resulting from Quaternary climate change played a significant role in the spatiotemporal evolution of lowland aquatic taxa, and provide priorities for conservation efforts.
authors: School of Biological Sciences, Environment Centre Wales, Bangor University, Deiniol Rd, Bangor LL57 2UW, UK. kus.debruyn@gmail.com
authors: Mark
authors: M
authors: de Bruyn
authors: Lukas
authors: L
authors: Rüber
authors: Stephan
authors: S
authors: Nylinder
authors: Björn
authors: B
authors: Stelbrink
authors: Nathan R
authors: NR
authors: Lovejoy
authors: Sébastien
authors: S
authors: Lavoué
authors: Heok Hui
authors: HH
authors: Tan
authors: Estu
authors: E
authors: Nugroho
authors: Daisy
authors: D
authors: Wowor
authors: Peter K L
authors: PK
authors: Ng
authors: M N
authors: MN
authors: Siti Azizah
authors: Thomas
authors: T
authors: Von Rintelen
authors: Robert
authors: R
authors: Hall
authors: Gary R
authors: GR
authors: Carvalho
mesh_terms: D000818:Animals; D001210:Asia, Southeastern; D023761:Beloniformes / Q000145:classification / Q000235:genetics*; D044822:Biodiversity; D005075:Biological Evolution; D057231:Climate Change; D003247:Conservation of Natural Resources; D004247:DNA / Q000032:analysis; D017753:Ecosystem; D019143:Evolution, Molecular; D005618:Fresh Water; D049810:Genetic Speciation; D008969:Molecular Sequence Data; D058885:Multilocus Sequence Typing; D010802:Phylogeny; D016133:Polymerase Chain Reaction
chemical_list: D004247:DNA