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Genomic analyses re...
Genomic analyses reveal three independent introductions of the invasive brown rat (Rattus norvegicus) to the Faroe Islands
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- Puckett, Emily E. (författare)
- Univ Memphis, Dept Biol Sci, Memphis, TN 38152 USA;Fordham Univ, Louis Calder Ctr, Biol Field Stn, Armonk, NY 10504 USA
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- Magnussen, Eydfinn (författare)
- Univ Faroe Isl, Fac Sci & Technol, Torshavn, Denmark
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- Khlyap, Liudmila A. (författare)
- Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow, Russia
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- Strand, Tanja, 1978- (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi,Natl Vet Inst SVA, Dept Microbiol, Uppsala, Sweden
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- Lundkvist, Åke (författare)
- Uppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi
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- Munshi-South, Jason (författare)
- Fordham Univ, Louis Calder Ctr, Biol Field Stn, Armonk, NY 10504 USA
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(creator_code:org_t)
- 2019-08-09
- 2020
- Engelska.
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Ingår i: Heredity. - : NATURE PUBLISHING GROUP. - 0018-067X .- 1365-2540. ; 124:1, s. 15-27
- Relaterad länk:
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Population genomics offers innovative approaches to test hypotheses related to the source and timing of introduction of invasive species. These approaches are particularly appropriate to study colonization of island ecosystems. The brown rat is a cold-hardy global invasive that has reached most of the world's island ecosystems, including even highly isolated archipelagoes such as the Faroe Islands in the North Atlantic Ocean. Historic records tell of rats rafting to the southern island of Suouroy in 1768 following a shipwreck off the coast of Scotland, then expanding across the archipelago. We investigated the demographic history of brown rats in the Faroes using 50,174 SNPs. We inferred three independent introductions of rats, including to Suouroy, the islands of Borooy and Viooy, and onto Streymoy from which they expanded to Eysturoy and Vagar. All Faroese populations showed signs of strong bottlenecks and declining effective population size. We inferred that these founder events removed low frequency alleles, the exact data needed to estimate recent demographic histories. Therefore, we were unable to accurately estimate the timing of each invasion. The difficulties with demographic inference may be applicable to other invasive species, particularly those with extreme and recent bottlenecks. We identified three invasions of brown rats to the Faroe Islands that resulted in highly differentiated populations that will be useful for future studies of life history variation and genomic adaptation.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
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- art (ämneskategori)
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