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Journal Articles Science Year : 2023

Genome structures resolve the early diversification of teleost fishes

Thomas Desvignes
Sahar Mejri
Ron Dirks
Hans Jansen
Wei-Jen Chen
Ingo Braasch
John Postlethwait

Abstract

Accurate species phylogenies are a prerequisite for evolutionary research. Teleosts are by far the largest and the most diversified group of extant vertebrates, but relationships among the three oldest lineages of extant teleosts remain unresolved. Based on seven high-quality new genome assemblies in Elopomorpha (tarpons, eels), we revisited the topology of the deepest branches of the teleost phylogeny using independent gene sequence and chromosomal rearrangement phylogenomic approaches. These analyses converged to a single scenario that unambiguously places the Elopomorpha and Osteoglossomorpha (bony-tongues) in a monophyletic group sister to all other teleosts, i.e., the Clupeocephala lineage. This finding resolves over 50 years of controversy on the evolutionary relationships of these lineages and highlights the power of combining different levels of genome-wide information to solve complex phylogenies. One-Sentence Summary Whole-genome analyses place Elopomorpha (tarpons, eels) and Osteoglossomorpha (bony-tongues) as sister groups at the deepest branching of crown teleosts.
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hal-03765882 , version 1 (24-07-2023)

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Attribution - NonCommercial

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Elise Parey, Alexandra Louis, Jérôme Montfort, Olivier Bouchez, Céline Roques, et al.. Genome structures resolve the early diversification of teleost fishes. Science, 2023, 379 (6632), pp.572-575. ⟨10.1101/2022.04.07.487469⟩. ⟨hal-03765882⟩

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