The genetic basis of a recent transition to live-bearing in marine snails.

Autor: Stankowski S; Ecology and Evolutionary Biology, School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK.; Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria.; Department of Ecology and Evolution, University of Sussex, Brighton BN1 9RH, UK., Zagrodzka ZB; Ecology and Evolutionary Biology, School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK., Garlovsky MD; Department of Applied Zoology, Faculty of Biology, Technische Universität Dresden, 01069 Dresden, Germany., Pal A; Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria., Shipilina D; Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria.; Department of Ecology and Genetics, Program of Evolutionary Biology, Uppsala University, SE-752 36 Uppsala, Sweden., Castillo DG; Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria., Lifchitz H; Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria., Le Moan A; CNRS and Sorbonne Université, Station Biologique de Roscoff, 29680 Roscoff, France.; Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, 452 96 Strömstad, Sweden., Leder E; Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, 452 96 Strömstad, Sweden.; Natural History Museum, University of Oslo, 0562 Oslo, Norway., Reeve J; Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, 452 96 Strömstad, Sweden., Johannesson K; Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, 452 96 Strömstad, Sweden., Westram AM; Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria.; Faculty of Biosciences and Aquaculture, Nord University, N-8049 Bodø, Norway., Butlin RK; Ecology and Evolutionary Biology, School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK.; Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, 452 96 Strömstad, Sweden.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2024 Jan 05; Vol. 383 (6678), pp. 114-119. Date of Electronic Publication: 2024 Jan 04.
DOI: 10.1126/science.adi2982
Abstrakt: Key innovations are fundamental to biological diversification, but their genetic basis is poorly understood. A recent transition from egg-laying to live-bearing in marine snails ( Littorina spp.) provides the opportunity to study the genetic architecture of an innovation that has evolved repeatedly across animals. Individuals do not cluster by reproductive mode in a genome-wide phylogeny, but local genealogical analysis revealed numerous small genomic regions where all live-bearers carry the same core haplotype. Candidate regions show evidence for live-bearer-specific positive selection and are enriched for genes that are differentially expressed between egg-laying and live-bearing reproductive systems. Ages of selective sweeps suggest that live-bearer-specific alleles accumulated over more than 200,000 generations. Our results suggest that new functions evolve through the recruitment of many alleles rather than in a single evolutionary step.
Databáze: MEDLINE
Nepřihlášeným uživatelům se plný text nezobrazuje