Codweb: Whole-genome sequencing uncovers extensive reticulations fueling adaptation among Atlantic, Arctic, and Pacific gadids
| Autor: | Katrín Halldórsdóttir, Einar Árnason |
|---|---|
| Přispěvatelé: | Líf- og umhverfisvísindadeild (HÍ), Faculty of Life and Environmental Sciences (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, University of Iceland |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Introgression 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Þorskur Walleye pollock Genetics Animals Atlantic Ocean Ecosystem Phylogeny Research Articles 030304 developmental biology Evolutionary Biology 0303 health sciences Pacific Ocean Multidisciplinary Whole Genome Sequencing biology Arctic Regions Gadidae Pacific cod SciAdv r-articles Molecular Sequence Annotation Phylogenetic network Ufsi biology.organism_classification Pollock Gadiformes Gadus morhua Evolutionary biology Þorskfiskar Atlantic cod Hybrid speciation Adaptation Introduced Species Erfðarannsóknir Research Article |
| Zdroj: | Science Advances |
| Popis: | Publisher's version (útgefin grein) Introgressive hybridization creates networks of genetic relationships across species. Among marine fish of the Gadidae family, Pacific cod and walleye pollock are separate invasions of an Atlantic cod ancestor into the Pacific. Cods are ecological success stories, and their ecologies allow them to support the largest fisheries of the world. The enigmatic walleye pollock differs morphologically, behaviorally, and ecologically from its relatives, representing a niche shift. Here, we apply whole-genome sequencing to Pacific, Arctic, and Atlantic gadids and reveal extensive introgression among them with the ABBA-BABA test and pseudolikelihood phylogenetic network analysis. We propose that walleye pollock resulted from extensive adaptive introgression or homoploid hybrid speciation. The path of evolution of these taxa is more web than a tree. Their ability to invade and expand into new habitats and become ecologically successful may depend on genes acquired through adaptive introgression or hybrid speciation. This work was supported by a grant from the Svala Árnadóttir private fund, by a grant from the University of Iceland Research Fund, by institutional funds from R.C. Lewontin, and by a Grant of Excellence from the Icelandic Science Foundation (no. 185151-051). A |
| Databáze: | OpenAIRE |
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