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Ecological adaptati...
Ecological adaptation in European eels is based on phenotypic plasticity
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- Enbody, Erik D. (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Pettersson, Mats (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab
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- Sprehn, Charlotte Grace (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Palm, Stefan (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för akvatiska resurser,Department of Aquatic Resources,Swedish Univ Agr Sci, Inst Freshwater Res, Dept Aquat Resources, S-17893 Drottningholm, Sweden.
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- Wickström, Håkan (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för akvatiska resurser,Department of Aquatic Resources,Swedish Univ Agr Sci, Inst Freshwater Res, Dept Aquat Resources, S-17893 Drottningholm, Sweden.
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- Andersson, Leif (författare)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Science for Life Laboratory, SciLifeLab,Uppsala Univ, Dept Med Biochem & Microbiol, S-75123 Uppsala, Sweden.;Texas A&M Univ, Dept Vet Integrat Biosci, College Stn, TX 77843 USA.;Swedish Univ Agr Sci, Dept Anim Breeding & Genet, S-75007 Uppsala, Sweden.,Institutionen för husdjursgenetik (HGEN),Department of Animal Breeding and Genetics,Uppsala University,Texas A&M University
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(creator_code:org_t)
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- 2021-01-21
- 2021
- Engelska.
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences (PNAS). - 0027-8424 .- 1091-6490. ; 118:4
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The relative role of genetic adaptation and phenotypic plasticity is of fundamental importance in evolutionary ecology [M. J. West-Eberhard, Proc. Natl. Acad. Sci. U.S.A. 102 (suppl. 1), 6543-6549 (2005)]. European eels have a complex life cycle, including transitions between life stages across ecological conditions in the Sargasso Sea, where spawning occurs, and those in brackish and freshwater bodies from northern Europe to northern Africa. Whether continental eel populations consist of locally adapted and genetically distinct populations or comprise a single panmictic population has received conflicting support. Here we use whole-genome sequencing and show that European eels belong to one panmictic population. A complete lack of geographical genetic differentiation is demonstrated. We postulate that this is possible because the most critical life stages-spawning and embryonic development-take place under near-identical conditions in the Sargasso Sea. We further show that within-generation selection, which has recently been proposed as a mechanism for genetic adaptation in eels, can only marginally change allele frequencies between cohorts of eels from different geographic regions. Our results strongly indicate plasticity as the predominant mechanism for how eels respond to diverse environmental conditions during postlarval stages, ultimately solving a long-standing question for a classically enigmatic species.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Fisk- och akvakulturforskning (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Fish and Aquacultural Science (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- adaptation
- panmixia
- plasticity
- genome biology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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