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Göteborgs universitets publikationer

Reduced Genetic Diversity and Increased Structure in American Mink on the Swedish Coast following Invasive Species Control

Författare och institution:
A. Zalewski (-); H. Zalewska (-); S. G. Lunneryd (-); Carl André (Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium); G. Mikusinski (-)
Publicerad i:
Plos One, 11 ( 6 )
ISSN:
1932-6203
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2016
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
Eradication and population reductions are often used to mitigate the negative impacts of nonnative invasive species on native biodiversity. However, monitoring the effectiveness of nonnative species control programmes is necessary to evaluate the efficacy of these measures. Genetic monitoring could provide valuable insights into temporal changes in demographic, ecological, and evolutionary processes in invasive populations being subject to control programmes. Such programmes should cause a decrease in effective population size and/or in genetic diversity of the targeted non-native species and an increase in population genetic structuring over time. We used microsatellite DNA data from Americanmink (Neovison vison) to determine whether the removal of this predator on the Koster Islands archipelago and the nearby Swedish mainland affected genetic variation over six consecutive years of mink culling by trappers as part of a population control programme. We found that on Koster Islands allelic richness decreased (from on average 4.53 to 3.55), genetic structuring increased, and effective population size did not change. In contrast, the mink population from the Swedish coast showed no changes in genetic diversity or structure, suggesting the stability of this population over 6 years of culling. Effective population size did not change over time but was higher on the coast than on the islands across all years. Migration rates from the islands to the coast were almost two times higher than from the coast to the islands. Most migrants leaving the coast were localised on the southern edge of the archipelago, as expected from the direction of the sea current between the two sites. Genetic monitoring provided valuable information on temporal changes in the population of American mink suggesting that this approach can be used to evaluate and improve control programmes of invasive vertebrates.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Biologiska vetenskaper
Nyckelord:
effective population-size, heterozygosity-fitness correlations, mustela-vison, multiple introductions, microsatellite markers, rat-populations, neovison-vison, n-e, eradication, variability, Science & Technology
Postens nummer:
239513
Posten skapad:
2016-07-26 16:56

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