Publikation:

Intra-lake origin and rapid expansion of invasive pelagic three-spined stickleback in Lake Constance

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2024

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Dahms, Carolin
Ros, Albert
Jacobs, Arne

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NeoBiota. Pensoft Publishers. 2024, 92, S. 259-280. ISSN 1619-0033. eISSN 1314-2488. Verfügbar unter: doi: 10.3897/neobiota.92.117430

Zusammenfassung

The rapid expansion of three-spined stickleback ( Gasterosteus aculeatus Linnaeus, 1758 (Perciformes, Gasterosteida)) in the pelagic zone of Lake Constance, Central Europe, since 2012 contributed to stark ecosystem-wide effects, such as food-web shifts and declines in native biodiversity, including commercially important fish species. Yet, the origin of this invasive pelagic population remains unclear. Using RAD-sequencing of Lake Constance sticklebacks, we show that the pelagic Lake Constance population likely arose recently within the lake, potentially from the littoral population. We did not detect any substantial genome-wide genetic differentiation between individuals from different habitats, supporting a recent origin of the pelagic population and/or ongoing gene flow. This is further supported by minimal differences in meristic and morphometric traits. However, we also identified multiple outlier loci between littoral and pelagic individuals across the genome, potentially suggesting early signs of adaptation despite high connectivity. In this study, we provide an important example of rapid within-lake ecological diversification of an invasive species from standing genetic variation. Ultimately, our findings will have major implications for the management of invasive pelagic stickleback, as they indicate that the stickleback population has to be managed as a whole and that management efforts cannot only focus on the hyper-abundant pelagic population.

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570 Biowissenschaften, Biologie

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ISO 690DAHMS, Carolin, Samuel ROCH, Kathryn R. ELMER, Albert ROS, Alexander BRINKER, Arne JACOBS, 2024. Intra-lake origin and rapid expansion of invasive pelagic three-spined stickleback in Lake Constance. In: NeoBiota. Pensoft Publishers. 2024, 92, S. 259-280. ISSN 1619-0033. eISSN 1314-2488. Verfügbar unter: doi: 10.3897/neobiota.92.117430
BibTex
@article{Dahms2024-04-30Intra-70172,
  year={2024},
  doi={10.3897/neobiota.92.117430},
  title={Intra-lake origin and rapid expansion of invasive pelagic three-spined stickleback in Lake Constance},
  volume={92},
  issn={1619-0033},
  journal={NeoBiota},
  pages={259--280},
  author={Dahms, Carolin and Roch, Samuel and Elmer, Kathryn R. and Ros, Albert and Brinker, Alexander and Jacobs, Arne}
}
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