Dispersal sweepstakes: Biotic interchange propelled air‐breathing fishes across the globe

作者：Richard Harrington, Matthew A. Kolmann, Julia J. Day, Brant C. Faircloth, Matt Friedman, Thomas J. Near · 发表于：Journal of Biogeography · 年份：2023 · DOI：10.1111/jbi.14781 · 被引用次数：14 · 研究领域：Fish biology, ecology, and behavior、Ichthyology and Marine Biology、Fish Biology and Ecology Studies

Abstract Aim Biotic interchanges between Africa, India, and Eurasia are central to explaining the present‐day distribution and diversity of freshwater organisms across these landmasses. Synbranchiformes is a diverse and species‐rich clade of freshwater acanthomorph fishes found on all southern continents except Antarctica, and include eel‐ and perch‐like, air‐breathing and non‐air‐breathing fishes. Lacking a comprehensive and resolved phylogeny of the entire clade, contemporary interpretations of synbranchiform biogeography invoke scenarios as disparate as Gondwanan vicariance and pan‐global rafting to explain their modern‐day distribution. Here, we study their biogeographic history of continental dispersal events and test whether these are associated with increases in lineage diversification. Location Asia, India, Africa freshwater habitats. Taxon Synbranchiformes (gouramis, snakeheads, swamp eels, and relatives). Methods We used nearly 1000 ultra‐conserved elements (UCEs) and Sanger‐sequenced genes to infer a phylogeny with representatives of all major synbranchiform lineages and nearly two‐thirds of its known species diversity. Incorporating fossil calibrations, we inferred a time‐calibrated phylogeny to which we apply Bayesian methods of ancestral area reconstruction and test for diversification rate shifts. Results Analyses of UCE data provide a resolved phylogeny for major synbranchiform lineages. Divergence times support a most recent common ancestor of the entire clad...