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2 results for “air breathing fish”
Data from: dispersal sweepstakes: biotic interchange propelled air-breathing fishes across the globe
<p>Synbranchiformes is a phenotypically diverse and species rich clade of freshwater acanthomorph fishes, which include eel- and perch-like, air-breathing and non-air-breathing fishes. The ability to breathe out of water has presumably aided lineages of Synbranchiformes in dispersing across all southern continents except Antarctica. The lack of a well-resolved, time-calibrated phylogeny of Synbranchiformes limits our understanding of the timing and geographic patterns of diversification of these anatomically and ecologically diverse fishes. As a consequence, contemporary interpretations of synbranchiform biogeography invoke scenarios as disparate as Gondwana vicariance and pan-global rafting to explain their modern-day geographic distribution. In this study, we use high-throughput sequencing of ultra-conserved elements (UCEs) to infer a phylogeny for all major synbranchiform lineages. We combine this dataset with existing Sanger sequenced genes and fossil calibrations to infer a comprehensive time-calibrated phylogeny of Synbranchiformes. Then, we use Bayesian methods of biogeographical reconstruction to document the history of dispersal of synbranchiforms, finding support for Southeast Asia as the likely ancestral area of all major lineages. Our results reject the hypothesis of Gondwanan vicariance explaining synbranchiform biogeography, and instead the historical biogeographic analyses support a hypothesis of independent continental invasions by snakeheads, anabantids, and spiny eels. However, there is no signal of elevated lineage diversification rates after these invasions. Instead, higher rates of lineage diversification in spiny eels pre-dates their arrival to Africa, while the high levels of lineage diversification observed in <em>Betta</em> were initiated prior to the flooding of insular Sundaland in SE Asia.</p>
Data from: dispersal sweepstakes: biotic interchange propelled air-breathing fishes across the globe
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