Genotypic detection of barriers to rat dispersal: Rattus rattus behind a peninsula predator-proof fence.

Simple item page
dc.citation.issue6
dc.citation.volume25
dc.contributor.authorYarita S
dc.contributor.authorMorgan-Richards M
dc.contributor.authorTrewick SA
dc.coverage.spatialNetherlands
dc.date.accessioned2024-11-20T19:28:45Z
dc.date.available2024-11-20T19:28:45Z
dc.date.issued2023-02-06
dc.description.abstractClear delimitation of management units is essential for effective management of invasive species. Analysis of population genetic structure of target species can improve identification and interpretation of natural and artificial barriers to dispersal. In Aotearoa New Zealand where the introduced ship rat (Rattus rattus) is a major threat to native biodiversity, effective suppression of pest numbers requires removal and limitation of reinvasion from outside the managed population. We contrasted population genetic structure in rat populations over a wide scale without known barriers, with structure over a fine scale with potential barriers to dispersal. MtDNA D-loop sequences and microsatellite genotypes resolved little genetic structure in southern North Island population samples of ship rat 100 km apart. In contrast, samples from major islands differed significantly for both mtDNA and nuclear markers. We also compared ship rats collected within a small peninsula reserve bounded by sea, suburbs and, more recently, a predator fence with rats in the surrounding forest. Here, mtDNA did not differ but genotypes from 14 nuclear loci were sufficient to distinguish the fenced population. This suggests that natural (sea) and artificial barriers (town, fence) are effectively limiting gene flow among ship rat populations over the short distance (~ 500 m) between the peninsula reserve and surrounding forest. The effectiveness of the fence alone is not clear given it is a recent feature and no historical samples exist; resampling population genetic diversity over time will improve understanding. Nonetheless, the current genetic isolation of the fenced rat population suggests that rat eradication is a sensible management option given that reinvasion appears to be limited and could probably be managed with a biosecurity programme.
dc.description.confidentialfalse
dc.edition.editionJune 2023
dc.format.pagination1723-1738
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/36777104
dc.identifier.citationYarita S, Morgan-Richards M, Trewick SA. (2023). Genotypic detection of barriers to rat dispersal: Rattus rattus behind a peninsula predator-proof fence.. Biol Invasions. 25. 6. (pp. 1723-1738).
dc.identifier.doi10.1007/s10530-023-03004-8
dc.identifier.eissn1573-1464
dc.identifier.elements-typejournal-article
dc.identifier.issn1387-3547
dc.identifier.pii3004
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/72032
dc.languageeng
dc.publisherSpringer Nature
dc.publisher.urihttps://link.springer.com/article/10.1007/s10530-023-03004-8
dc.relation.isPartOfBiol Invasions
dc.rights(c) 2023 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAotearoa New Zealand
dc.subjectMicrosatellite
dc.subjectMtDNA
dc.subjectPopulation structure
dc.subjectRattus rattus
dc.subjectWildlife sanctuary
dc.titleGenotypic detection of barriers to rat dispersal: Rattus rattus behind a peninsula predator-proof fence.
dc.typeJournal article
pubs.elements-id459725
pubs.organisational-groupCollege of Health
Files
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
Published version.pdf
Size:
2.76 MB
Format:
Adobe Portable Document Format
Description:
459725 PDF.pdf
Download
Thumbnail Image
Name:
Evidence.docx
Size:
796.09 KB
Format:
Microsoft Word XML
Description:
10530_2023_3004_MOESM1_ESM.docx
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
9.22 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles