Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen
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...
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ftdoajarticles:oai:doaj.org/article:d5499eadf1a2428ab3c3dc09e18afe93 2023-05-15T18:05:43+02:00 Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen Julien Louys Michael B. Herrera Vicki A. Thomson Andrew S. Wiewel Stephen C. Donnellan Sue O'Connor Ken Aplin 2020-11-01T00:00:00Z https://doi.org/10.3853/j.2201-4349.72.2020.1730 https://doaj.org/article/d5499eadf1a2428ab3c3dc09e18afe93 EN eng Australian Museum https://doaj.org/toc/0067-1975 https://doaj.org/toc/2201-4349 doi:10.3853/j.2201-4349.72.2020.1730 0067-1975 2201-4349 https://doaj.org/article/d5499eadf1a2428ab3c3dc09e18afe93 Records of the Australian Museum, Vol 72, Iss 5, Pp 287-302 (2020) rattus black rat pacific rat ricefield rat dong son drum maritime exchange southeast asia Museums. Collectors and collecting AM1-501 Evolution QH359-425 article 2020 ftdoajarticles https://doi.org/10.3853/j.2201-4349.72.2020.1730 2022-12-30T21:39:32Z 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 Directory of Open Access Journals: DOAJ Articles Pacific Records of the Australian Museum 72 5 287 302 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
rattus black rat pacific rat ricefield rat dong son drum maritime exchange southeast asia Museums. Collectors and collecting AM1-501 Evolution QH359-425 |
spellingShingle |
rattus black rat pacific rat ricefield rat dong son drum maritime exchange southeast asia Museums. Collectors and collecting AM1-501 Evolution QH359-425 Julien Louys Michael B. Herrera Vicki A. Thomson Andrew S. Wiewel Stephen C. Donnellan Sue O'Connor Ken Aplin Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen |
topic_facet |
rattus black rat pacific rat ricefield rat dong son drum maritime exchange southeast asia Museums. Collectors and collecting AM1-501 Evolution QH359-425 |
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 |
Julien Louys Michael B. Herrera Vicki A. Thomson Andrew S. Wiewel Stephen C. Donnellan Sue O'Connor Ken Aplin |
author_facet |
Julien Louys Michael B. Herrera Vicki A. Thomson Andrew S. Wiewel Stephen C. Donnellan Sue O'Connor Ken Aplin |
author_sort |
Julien Louys |
title |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen |
title_short |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen |
title_full |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen |
title_fullStr |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen |
title_full_unstemmed |
Expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through Nusa Tenggara, Indonesia. In Papers in Honour of Ken Aplin, ed. Julien Louys, Sue O’Connor, and Kristofer M. Helgen |
title_sort |
expanding population edge craniometrics and genetics provide insights into dispersal of commensal rats through nusa tenggara, indonesia. in papers in honour of ken aplin, ed. julien louys, sue o’connor, and kristofer m. helgen |
publisher |
Australian Museum |
publishDate |
2020 |
url |
https://doi.org/10.3853/j.2201-4349.72.2020.1730 https://doaj.org/article/d5499eadf1a2428ab3c3dc09e18afe93 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Records of the Australian Museum, Vol 72, Iss 5, Pp 287-302 (2020) |
op_relation |
https://doaj.org/toc/0067-1975 https://doaj.org/toc/2201-4349 doi:10.3853/j.2201-4349.72.2020.1730 0067-1975 2201-4349 https://doaj.org/article/d5499eadf1a2428ab3c3dc09e18afe93 |
op_doi |
https://doi.org/10.3853/j.2201-4349.72.2020.1730 |
container_title |
Records of the Australian Museum |
container_volume |
72 |
container_issue |
5 |
container_start_page |
287 |
op_container_end_page |
302 |
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1766177218012119040 |