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Zhang MY, Cao RD, Chen Y, Ma JC, Shi CM, Zhang YF, Zhang JX, Zhang YH. Genomic and Phenotypic Adaptations of Rattus tanezumi to Cold Limit Its Further Northward Expansion and Range Overlap with R. norvegicus. Mol Biol Evol 2024; 41:msae106. [PMID: 38829799 PMCID: PMC11184353 DOI: 10.1093/molbev/msae106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 05/19/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024] Open
Abstract
Global climate change has led to shifts in the distribution ranges of many terrestrial species, promoting their migration from lower altitudes or latitudes to higher ones. Meanwhile, successful invaders have developed genetic adaptations enabling the colonization of new environments. Over the past 40 years, Rattus tanezumi (RT) has expanded into northern China (Northwest and North China) from its southern origins. We studied the cold adaptation of RT and its potential for northward expansion by comparing it with sympatric Rattus norvegicus (RN), which is well adapted to cold regions. Through population genomic analysis, we revealed that the invading RT rats have split into three distinct populations: the North, Northwest, and Tibetan populations. The first two populations exhibited high genetic diversity, while the latter population showed remarkably low genetic diversity. These rats have developed various genetic adaptations to cold, arid, hypoxic, and high-UV conditions. Cold acclimation tests revealed divergent thermoregulation between RT and RN. Specifically, RT exhibited higher brown adipose tissue activity and metabolic rates than did RN. Transcriptome analysis highlighted changes in genes regulating triglyceride catabolic processes in RT, including Apoa1 and Apoa4, which were upregulated, under selection and associated with local adaptation. In contrast, RN showed changes in carbohydrate metabolism genes. Despite the cold adaptation of RT, we observed genotypic and phenotypic constraints that may limit its ability to cope with severe low temperatures farther north. Consequently, it is less likely that RT rats will invade and overlap with RN rats in farther northern regions.
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Affiliation(s)
- Ming-Yu Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui-Dong Cao
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Chen
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian-Cang Ma
- Zhangye Maize Stock Production Base, Zhangye 734024, Gansu, China
| | - Cheng-Min Shi
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei, China
| | - Yun-Feng Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jian-Xu Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yao-Hua Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- School of Resources and Environmental Engineering, Anhui University, Hefei 230601, Anhui, China
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Centeno-Cuadros A, Román J, Sánchez-Recuero A, Lucena-Pérez M, Delibes M, Godoy JA. Mating System, Breeding Success, and Pup Mortality of a Habitat Specialist Rodent: A Field and Molecular-based Approach. J MAMM EVOL 2021. [DOI: 10.1007/s10914-021-09542-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Chen Y, Zhao L, Teng H, Shi C, Liu Q, Zhang J, Zhang Y. Population genomics reveal rapid genetic differentiation in a recently invasive population of Rattus norvegicus. Front Zool 2021; 18:6. [PMID: 33499890 PMCID: PMC7836188 DOI: 10.1186/s12983-021-00387-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 01/17/2021] [Indexed: 12/19/2022] Open
Abstract
Background Invasive species bring a serious effect on local biodiversity, ecosystems, and even human health and safety. Although the genetic signatures of historical range expansions have been explored in an array of species, the genetic consequences of contemporary range expansions have received little attention, especially in mammal species. In this study, we used whole-genome sequencing to explore the rapid genetic change and introduction history of a newly invasive brown rat (Rattus norvegicus) population which invaded Xinjiang Province, China in the late 1970s. Results Bayesian clustering analysis, principal components analysis, and phylogenetic analysis all showed clear genetic differentiation between newly introduced and native rat populations. Reduced genetic diversity and high linkage disequilibrium suggested a severe population bottleneck in this colonization event. Results of TreeMix analyses revealed that the introduced rats were derived from an adjacent population in geographic region (Northwest China). Demographic analysis indicated that a severe bottleneck occurred in XJ population after the split off from the source population, and the divergence of XJ population might have started before the invasion of XJ. Moreover, we detected 42 protein-coding genes with allele frequency shifts throughout the genome for XJ rats and they were mainly associated with lipid metabolism and immunity, which could be seen as a prelude to future selection analyses in the novel environment of XJ. Conclusions This study presents the first genomic evidence on genetic differentiation which developed rapidly, and deepens the understanding of invasion history and evolutionary processes of this newly introduced rat population. This would add to our understanding of how invasive species become established and aid strategies aimed at the management of this notorious pest that have spread around the world with humans. Supplementary Information The online version contains supplementary material available at 10.1186/s12983-021-00387-z.
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Affiliation(s)
- Yi Chen
- The State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Lei Zhao
- The State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
| | - Huajing Teng
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, China
| | - Chengmin Shi
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Quansheng Liu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Jianxu Zhang
- The State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. .,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China.
| | - Yaohua Zhang
- The State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. .,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China.
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4
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Zhao L, Zhang JX, Zhang YH. Genetic boundary and gene flow between 2 parapatric subspecies of brown rats. Curr Zool 2020; 66:677-688. [PMID: 33391367 PMCID: PMC7769575 DOI: 10.1093/cz/zoaa027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/30/2020] [Indexed: 12/30/2022] Open
Abstract
Two parapatric Rattus norvegicus subspecies, R. n. humiliatus (RNH) and R. n. caraco (RNC), are classified according to morphological divergence and are mainly distributed in North and Northeast China. Here, we aimed to explore the population genetic structure, genetic boundary, and gene flow in these rats using 16 microsatellite loci. Structure analysis and principal component analysis revealed 3 ancestral clusters. We found that the intermediate cluster exhibited higher genetic diversity and a lower inbreeding coefficient than the other 2 clusters. The genetic differentiation between the 3 clusters was significant but weak, with a higher FST value being observed between the clusters on both sides. The subspecies boundary inferred from microsatellite markers may indicate the existence of an admixture or hybridization area covering Liaoning, Inner Mongolia, and Jilin Provinces, rather than corresponding to the administrative provincial boundaries between Liaoning and Jilin. The RNH and RNC subspecies presented moderate gene exchange and an asymmetric bidirectional gene flow pattern, with higher gene flow from the RNH subspecies to the RNC subspecies, constraining speciation. Such genetic characteristics might be explained by biological processes such as dispersal ability, mate choice, and dynamic lineage boundaries.
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Affiliation(s)
- Lei Zhao
- State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road 1-5, Chaoyang District, Beijing 100101, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian-Xu Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road 1-5, Chaoyang District, Beijing 100101, China.,CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yao-Hua Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road 1-5, Chaoyang District, Beijing 100101, China
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5
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Phylogeography of Rattus norvegicus in the South Atlantic Ocean. DIVERSITY-BASEL 2016. [DOI: 10.3390/d8040032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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McCreless EE, Huff DD, Croll DA, Tershy BR, Spatz DR, Holmes ND, Butchart SHM, Wilcox C. Past and estimated future impact of invasive alien mammals on insular threatened vertebrate populations. Nat Commun 2016; 7:12488. [PMID: 27535095 PMCID: PMC4992154 DOI: 10.1038/ncomms12488] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 07/07/2016] [Indexed: 11/23/2022] Open
Abstract
Invasive mammals on islands pose severe, ongoing threats to global biodiversity. However, the severity of threats from different mammals, and the role of interacting biotic and abiotic factors in driving extinctions, remain poorly understood at a global scale. Here we model global extirpation patterns for island populations of threatened and extinct vertebrates. Extirpations are driven by interacting factors including invasive rats, cats, pigs, mustelids and mongooses, native species taxonomic class and volancy, island size, precipitation and human presence. We show that controlling or eradicating the relevant invasive mammals could prevent 41–75% of predicted future extirpations. The magnitude of benefits varies across species and environments; for example, managing invasive mammals on small, dry islands could halve the extirpation risk for highly threatened birds and mammals, while doing so on large, wet islands may have little benefit. Our results provide quantitative estimates of conservation benefits and, when combined with costs in a return-on-investment framework, can guide efficient conservation strategies. Invasive vertebrates can decimate native species living on islands. Using a model of global extirpation patterns, McCreless et al. identify the types of invasive species most harmful to natives and predict when controlling or eradicating the invasive species is likely to succeed as a conservation strategy.
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Affiliation(s)
- Erin E McCreless
- Department of Ecology and Evolutionary Biology, Long Marine Laboratory, University of California Santa Cruz, 100 Shaffer Road, Santa Cruz, California 95060, USA
| | - David D Huff
- Point Adams Research Station, Fish Ecology Division, Northwest Fisheries Science Center, NOAA Fisheries, PO Box 155, Hammond, Oregon 97121, USA
| | - Donald A Croll
- Department of Ecology and Evolutionary Biology, Long Marine Laboratory, University of California Santa Cruz, 100 Shaffer Road, Santa Cruz, California 95060, USA
| | - Bernie R Tershy
- Department of Ecology and Evolutionary Biology, Long Marine Laboratory, University of California Santa Cruz, 100 Shaffer Road, Santa Cruz, California 95060, USA
| | - Dena R Spatz
- Department of Ecology and Evolutionary Biology, Long Marine Laboratory, University of California Santa Cruz, 100 Shaffer Road, Santa Cruz, California 95060, USA.,Island Conservation, 2161 Delaware Avenue, Suite A, Santa Cruz, California 95060, USA
| | - Nick D Holmes
- Island Conservation, 2161 Delaware Avenue, Suite A, Santa Cruz, California 95060, USA
| | - Stuart H M Butchart
- BirdLife International, David Attenborough Building, Pembroke Street, Cambridge CB23QZ, UK.,Department of Zoology, University of Cambridge, Downing Street, Cambridge CB23EJ, UK
| | - Chris Wilcox
- Marine and Atmospheric Research, Commonwealth Scientific and Industrial Research Organization, Hobart, Tasmania 7000, Australia
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Costa F, Richardson JL, Dion K, Mariani C, Pertile AC, Burak MK, Childs JE, Ko AI, Caccone A. Multiple Paternity in the Norway Rat, Rattus norvegicus, from Urban Slums in Salvador, Brazil. J Hered 2016; 107:181-6. [PMID: 26733693 DOI: 10.1093/jhered/esv098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 11/25/2015] [Indexed: 11/13/2022] Open
Abstract
The Norway rat, Rattus norvegicus, is one of the most important pest species globally and the main reservoir of leptospires causing human leptospirosis in the urban slums of tropical regions. Rodent control is a frequent strategy in those settings to prevent the disease but rapid growth from residual populations and immigration limit the long-term effectiveness of interventions. To characterize the breeding ecology of R. norvegicus and provide needed information for the level of genetic mixing, which can help identify inter-connected eradication units, we estimated the occurrence of multiple paternity, distances between mothers and sires, and inbreeding in rats from urban slum habitat in Salvador, Brazil. We genotyped 9 pregnant females, their 66 offspring, and 371 males at 16 microsatellite loci. Multiple paternity was observed in 22% (2/9) of the study litters. Of the 12 sires that contributed to the 9 litters, we identified 5 (42%) of those sires among our genotyped males. Related males were captured in close proximity to pregnant females (the mean inter-parent trapping distance per litter was 70 m, ±58 m SD). Levels of relatedness between mother-sire pairs were higher than expected and significantly higher than relatedness between all females and non-sire males. Our findings indicate multiple paternity is common, inbreeding is apparent, and that mother-sire dyads occur in close proximity within the study area. This information is relevant to improve the spatial definition of the eradication units that may enhance the effectiveness of rodent management programs aimed at preventing human leptospirosis. High levels of inbreeding may also be a sign that eradication efforts are successful.
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Affiliation(s)
- Federico Costa
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone).
| | - Jonathan L Richardson
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - Kirstin Dion
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - Carol Mariani
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - Arsinoe C Pertile
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - Mary K Burak
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - James E Childs
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - Albert I Ko
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
| | - Adalgisa Caccone
- From the Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador 40296-710, Brazil (Costa and Pertile); Providence College, 1 Cunningham Square, Providence, RI 02918 (Richardson and Burak); Instituto de Saúde Coletiva, Universidade Federal da Bahia, UFBA, Salvador 40.110-040, Brazil (Costa); Department of Epidemiology of Microbial Disease, Yale School of Public Health, 60 College Street, New Haven, CT 06511 (Costa, Childs, and Ko); Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK (Costa); Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT 06520-8106 (Dion, Mariani, and Caccone)
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Commensalism facilitates gene flow in mountains: a comparison between two Rattus species. Heredity (Edinb) 2015; 115:253-61. [PMID: 25944468 DOI: 10.1038/hdy.2015.34] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 03/19/2015] [Accepted: 03/20/2015] [Indexed: 01/23/2023] Open
Abstract
Small mammal dispersal is strongly affected by geographical barriers. However, commensal small mammals may be passively transported over large distances and strong barriers by humans (often with agricultural products). This pattern should be especially apparent in topographically complex landscapes, such as mountain ranges, where valleys and/or peaks can limit dispersal of less vagile species. We predict that commensal species would have lower genetic differentiation and higher migration rates than related non-commensals in such landscapes. We contrasted population genetic differentiation in two sympatric Rattus species (R. satarae and R. rattus) in the Western Ghats mountains in southern India. We sampled rats from villages and adjacent forests in seven locations (20-640 km apart). Capture-based statistics confirmed that R. rattus is abundant in human settlements in this region, whereas R. satarae is non-commensal and found mostly in forests. Population structure analyses using ~970-bp mitochondrial control region and 17 microsatellite loci revealed higher differentiation for the non-commensal species (R. satarae F-statistics=0.420, 0.065, R. rattus F-statistics=0.195, 0.034; mitochondrial DNA, microsatellites, respectively). Genetic clustering analyses confirm that clusters in R. satarae are more distinct and less admixed than those in R. rattus. R. satarae shows higher slope for isolation-by-distance compared with R. rattus. Although mode of migration estimates do not strongly suggest higher rates in R. rattus than in R. satarae, they indicate that migration over long distances could still be higher in R. rattus. We suggest that association with humans could drive the observed pattern of differentiation in the commensal R. rattus, consequently impacting not only their dispersal abilities, but also their evolutionary trajectories.
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10
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Theuerkauf J, Kuehn R, Gula R, Sztencel‐Jabłonka A, Jourdan H, Taugamoa A, Labrousse D, Bogdanowicz W. Invasion history affects genetic structure in island rat populations. J Zool (1987) 2015. [DOI: 10.1111/jzo.12206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Theuerkauf
- Museum and Institute of Zoology Polish Academy of Sciences Warszawa Poland
| | - R. Kuehn
- Unit of Molecular Zoology Chair of Zoology Department of Animal Science Technische Universität München Freising Germany
- Department of Fish, Wildlife & Conservation Ecology Molecular Biology Program New Mexico State University Las Cruces NM USA
| | - R. Gula
- Museum and Institute of Zoology Polish Academy of Sciences Warszawa Poland
| | | | - H. Jourdan
- Institut Méditerranéen de Biodiversité et d'Écologie marine et continentale (IMBE) Aix‐Marseille Université UMR CNRS IRD Avignon Université UMR 237 IRD Centre IRD Nouméa Nouméa New Caledonia
| | - A. Taugamoa
- Service Territorial de l'Environnement Leava Wallis and Futuna
| | - D. Labrousse
- Service Territorial de l'Environnement Leava Wallis and Futuna
| | - W. Bogdanowicz
- Museum and Institute of Zoology Polish Academy of Sciences Warszawa Poland
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11
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Frontier population dynamics of an invasive squirrel species: Do introduced populations function differently than those in the native range? Biol Invasions 2014. [DOI: 10.1007/s10530-014-0787-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Establishing the eradication unit of Molara Island: a case of study from Sardinia, Italy. Biol Invasions 2013. [DOI: 10.1007/s10530-013-0487-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Kajdacsi B, Costa F, Hyseni C, Porter F, Brown J, Rodrigues G, Farias H, Reis MG, Childs JE, Ko AI, Caccone A. Urban population genetics of slum-dwelling rats (Rattus norvegicus) in Salvador, Brazil. Mol Ecol 2013; 22:5056-70. [PMID: 24118116 PMCID: PMC3864905 DOI: 10.1111/mec.12455] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/07/2013] [Accepted: 07/08/2013] [Indexed: 01/25/2023]
Abstract
Throughout the developing world, urban centres with sprawling slum settlements are rapidly expanding and invading previously forested ecosystems. Slum communities are characterized by untended refuse, open sewers and overgrown vegetation, which promote rodent infestation. Norway rats (Rattus norvegicus) are reservoirs for epidemic transmission of many zoonotic pathogens of public health importance. Understanding the population ecology of R. norvegicus is essential to formulate effective rodent control strategies, as this knowledge aids estimation of the temporal stability and spatial connectivity of populations. We screened for genetic variation, characterized the population genetic structure and evaluated the extent and patterns of gene flow in the urban landscape using 17 microsatellite loci in 146 rats from nine sites in the city of Salvador, Brazil. These sites were divided between three neighbourhoods within the city spaced an average of 2.7 km apart. Surprisingly, we detected very little relatedness among animals trapped at the same site and found high levels of genetic diversity, as well as structuring across small geographical distances. Most F(ST) comparisons among sites were statistically significant, including sites <400 m apart. Bayesian analyses grouped the samples in three genetic clusters, each associated with distinct sampling sites from different neighbourhoods or valleys within neighbourhoods. These data indicate the existence of complex genetic structure in R. norvegicus in Salvador, linked to the heterogeneous urban landscape. Future rodent control measures need to take into account the spatial and temporal linkage of rat populations in Salvador, as revealed by genetic data, to develop informed eradication strategies.
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Affiliation(s)
- Brittney Kajdacsi
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT, USA
| | - Federico Costa
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, 60 College Street, New Haven, CT, USA
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Brazil
| | - Chaz Hyseni
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT, USA
| | - Fleur Porter
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, 60 College Street, New Haven, CT, USA
| | - Julia Brown
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT, USA
| | - Gorete Rodrigues
- Centro de Controle de Zoonoses, Secretaria Municipal de Saúde, Ministério da Saúde, Salvador, Brazil
| | - Helena Farias
- Centro de Controle de Zoonoses, Secretaria Municipal de Saúde, Ministério da Saúde, Salvador, Brazil
| | - Mitermeyer G. Reis
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Brazil
| | - James E. Childs
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, 60 College Street, New Haven, CT, USA
| | - Albert I. Ko
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, 60 College Street, New Haven, CT, USA
- Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Brazil
| | - Adalgisa Caccone
- Department of Ecology and Evolutionary Biology, Yale University, 21 Sachem Street, New Haven, CT, USA
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Samaniego-Herrera A, Anderson DP, Parkes JP, Aguirre-Muñoz A. Rapid assessment of rat eradication after aerial baiting. J Appl Ecol 2013. [DOI: 10.1111/1365-2664.12147] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Araceli Samaniego-Herrera
- School of Biological Sciences; University of Auckland; Private Bag 92019 Auckland New Zealand
- Grupo de Ecología y Conservación de Islas; A.C., Moctezuma 836 Zona Centro Ensenada C.P. 22800 Baja California México
| | | | | | - Alfonso Aguirre-Muñoz
- Grupo de Ecología y Conservación de Islas; A.C., Moctezuma 836 Zona Centro Ensenada C.P. 22800 Baja California México
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15
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King CM, Innes JG, Gleeson D, Fitzgerald N, Winstanley T, O’Brien B, Bridgman L, Cox N. Reinvasion by ship rats (Rattus rattus) of forest fragments after eradication. Biol Invasions 2011. [DOI: 10.1007/s10530-011-0051-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Fitzpatrick BM, Fordyce JA, Niemiller ML, Reynolds RG. What can DNA tell us about biological invasions? Biol Invasions 2011. [DOI: 10.1007/s10530-011-0064-1] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Oppel S, Beaven BM, Bolton M, Vickery J, Bodey TW. Eradication of invasive mammals on islands inhabited by humans and domestic animals. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2011; 25:232-240. [PMID: 21054528 DOI: 10.1111/j.1523-1739.2010.01601.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Non-native invasive mammal species have caused major ecological change on many islands. To conserve native species diversity, invasive mammals have been eradicated from several islands not inhabited by humans. We reviewed the challenges associated with campaigns to eradicate invasive mammals from islands inhabited by humans and domestic animals. On these islands, detailed analyses of the social, cultural, and economic costs and benefits of eradication are required to increase the probability of local communities supporting the eradication campaign. The ecological benefits of eradication (e.g., improvement of endemic species' probability of survival) are difficult to trade-off against social and economic costs due to the lack of a common currency. Local communities may oppose an eradication campaign because of perceived health hazards, inconvenience, financial burdens, religious beliefs, or other cultural reasons. Besides these social challenges, the presence of humans and domestic animals also complicates eradication and biosecurity procedures (measures taken to reduce the probability of unwanted organisms colonizing an island to near zero). For example, houses, garbage-disposal areas, and livestock-feeding areas can provide refuges for certain mammals and therefore can decrease the probability of a successful eradication. Transport of humans and goods to an island increases the probability of inadvertent reintroduction of invasive mammals, and the establishment of permanent quarantine measures is required to minimize the probability of unwanted recolonization after eradication. We recommend a close collaboration between island communities, managers, and social scientists from the inception of an eradication campaign to increase the probability of achieving and maintaining an island permanently free of invasive mammals.
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Affiliation(s)
- Steffen Oppel
- Royal Society for the Protection of Birds, The Lodge, Sandy, Bedfordshire SG19 2DL, UK
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Fine-scale genetic structure of mainland invasive Rattus rattus populations: implications for restoration of forested conservation areas in New Zealand. CONSERV GENET 2010. [DOI: 10.1007/s10592-010-0085-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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