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1000 Titel
  • Lower adaptive immunity in invasive Egyptian geese compared to sympatric native waterfowls
1000 Autor/in
  1. Messina, Simone |
  2. Prüter, Hanna |
  3. Czirják, Gábor Árpád |
  4. Costantini, David |
1000 Erscheinungsjahr 2025
1000 LeibnizOpen
1000 Publikationstyp
  1. Artikel |
1000 Online veröffentlicht
  • 2024-08-19
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  • -
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1000 Copyrightjahr
  • 2024
1000 Lizenz
1000 Verlagsversion
  • https://doi.org/10.1101/2024.04.03.587943 |
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1000 Sprache der Publikation
1000 Abstract/Summary
  • Successful invasive species increase their spreading success by trading-off nutritional and metabolic resources allocated to reproduction and range expansion with other costly body functions. One proposed mechanism for the reallocation of resources is a trade-off with the immune function and the regulation of oxidative status. Relying on a panel of blood-based markers of immune function and oxidative status quantified in an invasive species (Egyptian goose) and two native competing species (mallard and mute swan) in Germany, we tested the hypothesis that the invasive species would have (i) lower investment in immune function, (ii) lower levels of oxidative damage, and (iii) no higher antioxidant defences compared to the native species. We found lower levels of adaptive immune markers (lymphocytes and immunoglobulin Y), in the invasive species compared to the two native species. Reactive oxygen metabolites, a marker of oxidative damage, were also lower in Egyptian geese compared to the other species, while levels of antioxidants were generally similar. Mute swans showed the highest levels of heterophils, lysozymes and haemolysis among the three species, possibly due to its larger body mass. Our results point to a reduced investment in adaptive immune function in the invasive species as a possible resources-saving immunological strategy due to the loss of co-evolved parasites in the new colonised habitats, as observed in a previous study. A lower investment in immune function may benefit other energy-demanding activities, such as reproduction, dispersal, and territoriality.
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  1. https://orcid.org/0000-0001-6034-7450|https://orcid.org/0000-0002-1844-4481|https://orcid.org/0000-0001-9488-0069|https://orcid.org/0000-0002-8140-8790
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