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Bolstad GH, Hindar K, Robertsen G, et al. Gene flow from domesticated escapes alters the life history of wild Atlantic salmon. Nat Ecol Evol. 2017;1(5):124doi: 10.1038/s41559-017-0124.
Bolstad, G. H., Hindar, K., Robertsen, G., Jonsson, B., Sægrov, H., Diserud, O. H., Fiske, P., Jensen, A. J., Urdal, K., Næsje, T. F., Barlaup, B. T., Florø-Larsen, B., Lo, H., Niemelä, E., & Karlsson, S. (2017). Gene flow from domesticated escapes alters the life history of wild Atlantic salmon. Nature ecology & evolution, 1(5), 124. https://doi.org/10.1038/s41559-017-0124
Bolstad, Geir H, et al. "Gene flow from domesticated escapes alters the life history of wild Atlantic salmon." Nature ecology & evolution vol. 1,5 (2017): 124. doi: https://doi.org/10.1038/s41559-017-0124
Bolstad GH, Hindar K, Robertsen G, Jonsson B, Sægrov H, Diserud OH, Fiske P, Jensen AJ, Urdal K, Næsje TF, Barlaup BT, Florø-Larsen B, Lo H, Niemelä E, Karlsson S. Gene flow from domesticated escapes alters the life history of wild Atlantic salmon. Nat Ecol Evol. 2017 Apr 10;1(5):124. doi: 10.1038/s41559-017-0124. PMID: 28812692.
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Nat Ecol Evol. 2017 Apr 10;1(5):124. doi: 10.1038/s41559-017-0124.

Gene flow from domesticated escapes alters the life history of wild Atlantic salmon.

Nature ecology & evolution

Geir H Bolstad, Kjetil Hindar, Grethe Robertsen, Bror Jonsson, Harald Sægrov, Ola H Diserud, Peder Fiske, Arne J Jensen, Kurt Urdal, Tor F Næsje, Bjørn T Barlaup, Bjørn Florø-Larsen, Håvard Lo, Eero Niemelä, Sten Karlsson

Affiliations

  1. Norwegian Institute for Nature Research (NINA), NO-7485 Trondheim, Norway.
  2. Norwegian Institute for Nature Research (NINA), NO-0349 Oslo, Norway.
  3. Radgivende Biologer, NO-5003 Bergen, Norway.
  4. Uni Research, NO-5006 Bergen, Norway.
  5. Norwegian Veterinary Institute, NO-7485 Trondheim, Norway.
  6. Natural Resources Institute Finland, FI-90014 Oulu, Finland.

PMID: 28812692 DOI: 10.1038/s41559-017-0124

Abstract

Interbreeding between domesticated and wild animals occurs in several species. This gene flow has long been anticipated to induce genetic changes in life-history traits of wild populations, thereby influencing population dynamics and viability. Here, we show that individuals with high levels of introgression (domesticated ancestry) have altered age and size at maturation in 62 wild Atlantic salmon Salmo salar populations, including seven ancestral populations to breeding lines of the domesticated salmon. This study documents widespread changes to life-history traits in wild animal populations following gene flow from selectively bred, domesticated conspecifics. The continued high abundance of escaped, domesticated Atlantic salmon thus threatens wild Atlantic salmon populations by inducing genetic changes in fitness-related traits. Our results represent key evidence and a timely warning concerning the potential ecological impacts of the globally increasing use of domesticated animals.

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