Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia
The Nusa Tenggara island chain consists of an archipelago that runs roughly east-west in eastern Indonesia. As part of Wallacea, it has never been connected to any continental landmass, and has been subject to a variety of biological invasions that have populated the islands. Here, we examine the cr...
Published in: | Records of the Australian Museum |
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2020
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Online Access: | https://researchprofiles.canberra.edu.au/en/publications/07dd96c4-5e9d-4409-9ca9-0d9c768d5d41 https://doi.org/10.3853/J.2201-4349.72.2020.1730 https://researchsystem.canberra.edu.au/ws/files/61014962/1730_complete.9d2f45c.pdf http://www.scopus.com/inward/record.url?scp=85097737330&partnerID=8YFLogxK |
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ftcanberrauncris:oai:pure.atira.dk:publications/07dd96c4-5e9d-4409-9ca9-0d9c768d5d41 2024-09-15T18:32:08+00:00 Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia Louys, Julien Herrera, Michael B. Thomson, Vicki A. Wiewel, Andrew S. Donnellan, Stephen C. O'Connor, Sue Aplin, Ken 2020-11-25 application/pdf https://researchprofiles.canberra.edu.au/en/publications/07dd96c4-5e9d-4409-9ca9-0d9c768d5d41 https://doi.org/10.3853/J.2201-4349.72.2020.1730 https://researchsystem.canberra.edu.au/ws/files/61014962/1730_complete.9d2f45c.pdf http://www.scopus.com/inward/record.url?scp=85097737330&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Louys , J , Herrera , M B , Thomson , V A , Wiewel , A S , Donnellan , S C , O'Connor , S & Aplin , K 2020 , ' Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia ' , Records of the Australian Museum , vol. 72 , no. 5 , pp. 287-302 . https://doi.org/10.3853/J.2201-4349.72.2020.1730 article 2020 ftcanberrauncris https://doi.org/10.3853/J.2201-4349.72.2020.1730 2024-08-14T23:34:17Z The Nusa Tenggara island chain consists of an archipelago that runs roughly east-west in eastern Indonesia. As part of Wallacea, it has never been connected to any continental landmass, and has been subject to a variety of biological invasions that have populated the islands. Here, we examine the craniometric and molecular genetic records of several species of Rattus sensu lato in the island chain. We use the predictions of expanding population edge phenotypic selection in an effort to understand the movement of Rattus rattus and Rattus exulans through the archipelago. We also examine the mitochondrial haplotype networks of R. argentiventer, R. exulans, and the R. rattus Complex (RrC) and microsatellite allele frequency clustering patterns for the RrC, to examine relationships within and between Nusa Tenggara populations, and those of Asia and the Pacific where relevant for each taxon. In the RrC LIV and RrC LII haplotype networks, 20 haplotypes with seven from Nusa Tenggara were observed for RrC LIV, and 100 haplotypes with seven from Nusa Tenggara observed for RrC LII. The top performing RrC craniometric model had a negative association between size and distance from the easternmost point of the samples from Nusa Tenggara, consistent with increasing size moving west to east. The cytochrome b network for the R. exulans sequences comprised 14 haplotypes, with three observed from mainland Southeast Asia, one shared with Nusa Tenggara and regions further east, and another haplotype observed in Nusa Tenggara and in the Pacific. The R. exulans craniometric model selection produced four equally well performing models, with no migration scenario preferred. Finally, the haplotype network of R. argentiventer comprised 10 haplotypes, with six observed in Nusa Tenggara, including a relatively early cluster from the east of the archipelago. Our results are compatible with a polyphasic and polydirectional invasion of Nusa Tenggara by Rattus, likely beginning with RrC from the west to the east, an expansion of R. exulans ... Article in Journal/Newspaper Rattus rattus University of Canberra Research Portal Records of the Australian Museum 72 5 287 302 |
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Open Polar |
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University of Canberra Research Portal |
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ftcanberrauncris |
language |
English |
description |
The Nusa Tenggara island chain consists of an archipelago that runs roughly east-west in eastern Indonesia. As part of Wallacea, it has never been connected to any continental landmass, and has been subject to a variety of biological invasions that have populated the islands. Here, we examine the craniometric and molecular genetic records of several species of Rattus sensu lato in the island chain. We use the predictions of expanding population edge phenotypic selection in an effort to understand the movement of Rattus rattus and Rattus exulans through the archipelago. We also examine the mitochondrial haplotype networks of R. argentiventer, R. exulans, and the R. rattus Complex (RrC) and microsatellite allele frequency clustering patterns for the RrC, to examine relationships within and between Nusa Tenggara populations, and those of Asia and the Pacific where relevant for each taxon. In the RrC LIV and RrC LII haplotype networks, 20 haplotypes with seven from Nusa Tenggara were observed for RrC LIV, and 100 haplotypes with seven from Nusa Tenggara observed for RrC LII. The top performing RrC craniometric model had a negative association between size and distance from the easternmost point of the samples from Nusa Tenggara, consistent with increasing size moving west to east. The cytochrome b network for the R. exulans sequences comprised 14 haplotypes, with three observed from mainland Southeast Asia, one shared with Nusa Tenggara and regions further east, and another haplotype observed in Nusa Tenggara and in the Pacific. The R. exulans craniometric model selection produced four equally well performing models, with no migration scenario preferred. Finally, the haplotype network of R. argentiventer comprised 10 haplotypes, with six observed in Nusa Tenggara, including a relatively early cluster from the east of the archipelago. Our results are compatible with a polyphasic and polydirectional invasion of Nusa Tenggara by Rattus, likely beginning with RrC from the west to the east, an expansion of R. exulans ... |
format |
Article in Journal/Newspaper |
author |
Louys, Julien Herrera, Michael B. Thomson, Vicki A. Wiewel, Andrew S. Donnellan, Stephen C. O'Connor, Sue Aplin, Ken |
spellingShingle |
Louys, Julien Herrera, Michael B. Thomson, Vicki A. Wiewel, Andrew S. Donnellan, Stephen C. O'Connor, Sue Aplin, Ken Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia |
author_facet |
Louys, Julien Herrera, Michael B. Thomson, Vicki A. Wiewel, Andrew S. Donnellan, Stephen C. O'Connor, Sue Aplin, Ken |
author_sort |
Louys, Julien |
title |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia |
title_short |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia |
title_full |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia |
title_fullStr |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia |
title_full_unstemmed |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia |
title_sort |
expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, indonesia |
publishDate |
2020 |
url |
https://researchprofiles.canberra.edu.au/en/publications/07dd96c4-5e9d-4409-9ca9-0d9c768d5d41 https://doi.org/10.3853/J.2201-4349.72.2020.1730 https://researchsystem.canberra.edu.au/ws/files/61014962/1730_complete.9d2f45c.pdf http://www.scopus.com/inward/record.url?scp=85097737330&partnerID=8YFLogxK |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Louys , J , Herrera , M B , Thomson , V A , Wiewel , A S , Donnellan , S C , O'Connor , S & Aplin , K 2020 , ' Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, Indonesia ' , Records of the Australian Museum , vol. 72 , no. 5 , pp. 287-302 . https://doi.org/10.3853/J.2201-4349.72.2020.1730 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3853/J.2201-4349.72.2020.1730 |
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Records of the Australian Museum |
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72 |
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5 |
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287 |
op_container_end_page |
302 |
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1810473894040043520 |