Assessing the Impacts of Adaptation to Native-Range Habitats and Contemporary Founder Effects on Genetic Diversity in an Invasive Fish.

Autor: Bernos TA; Department of Ecology and Evolutionary Biology University of Toronto Toronto Ontario Canada.; Department of Biological Sciences University of Toronto Scarborough Toronto Ontario Canada., Lajbner Z; Physics and Biology Unit Okinawa Institute of Science and Technology Graduate University Okinawa Japan.; Laboratory of Molecular Ecology Institute of Animal Physiology and Genetics, Czech Academy of Science Prague Czechia., Kotlík P; Laboratory of Molecular Ecology Institute of Animal Physiology and Genetics, Czech Academy of Science Prague Czechia., Hill JM; Maurice Lamontagne Institute, Fisheries and Oceans Canada Mont-Joli Quebec Canada., Marková S; Laboratory of Molecular Ecology Institute of Animal Physiology and Genetics, Czech Academy of Science Prague Czechia., Yick J; Inland Fisheries Service New Norfolk Tasmania Australia., Mandrak NE; Department of Biological Sciences University of Toronto Scarborough Toronto Ontario Canada., Jeffries KM; Department of Biological Sciences University of Manitoba Winnipeg Manitoba Canada.
Jazyk: angličtina
Zdroj: Evolutionary applications [Evol Appl] 2024 Oct 04; Vol. 17 (10), pp. e70006. Date of Electronic Publication: 2024 Oct 04 (Print Publication: 2024).
DOI: 10.1111/eva.70006
Abstrakt: Species invading non-native habitats can cause irreversible environmental damage and economic harm. Yet, how introduced species become widespread invaders remains poorly understood. Adaptation within native-range habitats and rapid adaptation to new environments may both influence invasion success. Here, we examine these hypotheses using 7058 SNPs from 36 native, 40 introduced and 19 farmed populations of tench, a fish native to Eurasia. We examined genetic structure among these populations and accounted for long-term evolutionary history within the native range to assess whether introduced populations exhibited lower genetic diversity than native populations. Subsequent to infer genotype-environment correlations within native-range habitats, we assessed whether adaptation to native environments may have shaped the success of some introduced populations. At the broad scale, two glacial refugia contributed to the ancestry and genomic diversity of tench. However, native, introduced and farmed populations of admixed origin exhibited up to 10-fold more genetic diversity (i.e., observed heterozygosity, expected heterozygosity and allelic richness) compared to populations with predominantly single-source ancestry. The effects of introduction to a new location were also apparent as introduced populations exhibited fewer private alleles (mean = 9.9 and 18.9 private alleles in introduced and native populations, respectively) and higher population-specific Fst compared to native populations, highlighting their distinctiveness relative to the pool of allelic frequencies across tench populations. Finally, introduced populations with varying levels of genetic variation and similar genetic compositions have become established and persisted under strikingly different climatic and ecological conditions. Our results suggest that lack of prior adaptation and low genetic variation may not consistently hinder the success of introduced populations for species with a demonstrated ability to expand their native range.
Competing Interests: The authors declare no conflicts of interest.
(© 2024 The Author(s). Evolutionary Applications published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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