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Inaccuracies in the history of a well-known introduction:a case study of the Australian House Sparrow(Passer domesticus)

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Chinese Birds 2016年第2期7卷 95-109页

作者： Samuel C.Andrew Simon C.Griffith Department of Biological Sciences Macquarie University

Background:Modern ecosystems contain many invasive species as a result of the activity of acclimatisation societies that operated in the second half of the nineteenth century,and these species provide good opportunities for studying invasion ***,to gain insight into the ecological and genetic mechanisms that determine the rate of colonization and adaptation to new environments,we need a good understanding of the history of the introduced species,and a knowledge of the source population,timing,and number of individuals introduced is particularly ***,any inaccuracies in the history of an introduction will affect subsequent assumptions and ***:Focusing on a single well-known species,the House Sparrow(Passer domesticus),we have documented the introduction into Australia using primary sources(*** records and newspaper articles).Results:Our revised history differs in a number of significant ways from previous *** evidence indicates that the House Sparrow was not solely introduced from source populations in England but also from Germany and most strikingly also from India—with the latter birds belonging to a different *** also clarify the distinction between the number released and the number of founders,due to pre-release captive breeding programs,as well as identifying inaccuracies in a couple of well-cited sources with respect to the range expansion of the introduced ***:Our work suggests that caution is required for those studying introductions using the key sources of historical information and ideally should review original sources of information to verify the accuracy of published accounts.

关键词： Acclimatisation Bottlenecks Propagule size Range expansion Hybridisation

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Invasion genetics： Lessons from a ubiquitous bird, the house sparrow Passer domesticus

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Current Zoology 2015年第3期61卷 465-476页

作者： Andrea L. LIEBL Aaron W. SCHREY Samuel C. ANDREW Elizabeth L.SHELDON Simon C. GRIFFITH university of Exeter ComwaU Campus Penryn Cornwall TR10 9EZ UK Department of Biology Armstrong State University Savannah GA31419 USA Department of Biological Sciences Macquarie University Sydney NSW 2109 Australia

Following an introduction, non-native species are exposed to environments that differ from those found in their native range; further, as these non-native species expand beyond the site of introduction, they must constantly adapt to novel environ- ments. Although introduced species are present across most ecosystems, few species have successfully established themselves on a truly global scale. One such species, the house sparrow Passer domesticus, is now one of the world＇s most broadly distributed vertebrate species and has been introduced to a great part of its current range. To date, work on four continents suggests both ge- netic and phenotypic variation exists between native and introduced ranges. As such, house sparrows represent an excellent op- portunity to study adaptations to novel environments and how these adaptations are derived. The global distribution of this spe- cies and the multiple independent introductions to geographically isolated sites allow researchers to ask questions regarding ge- netic variation and adaptation on a global scale. Here, we summarize the molecular studies of invasive house sparrows from the earliest work using allozymes through more recent work on epigenetics; using these studies, we discuss patterns of dispersal of this species. We then discuss future directions in techniques （e.g. next generation sequencing） and how they will provide new in- sight into questions that are fundamental to invasion biology. Finally, we discuss how continued research on the house sparrow in light of these genetic changes and adaptations will elucidate answers of adaptation, invasion biology, range expansion, and resi- lience in vertebrate systems generally

关键词： House sparrow Invasive Passer domesticus

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Length-based separation of Bacillus subtilis bacterial populations by viscoelastic microfluidics

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Microsystems & Nanoengineering 2022年第1期8卷 149-159页

作者： Ping Liu Hangrui Liu Lucie Semenec Dan Yuan Sheng Yan Amy K.Cain Ming Li Suqian university Suqian 223800China School of Engineering Macquarie UniversitySydneyNSW 2109Australia Department of Physics and Astronomy Macquarie UniversitySydneyNSW 2109Australia ARC Centre of excellence in Synthetic Biology Department of Molecular ScienceMacquarie UniversitySydneyNSW 2109Australia Centre for Regional and Rural Futures Deakin UniversityGeelongVIC 3216Australia Institute for Advanced Study Shenzhen UniversityShenzhen 518060China Biomolecular Discovery research Centre Macquarie UniversitySydneyNSW 2109Australia

In this study,we demonstrated the label-free continuous separation and enrichment of Bacillus subtilis populations based on length using viscoelastic ***,a gram-positive,rod-shaped bacterium,has been widely used as a model organism and an industrial *** can be arranged in different morphological forms,such as single rods,chains,and clumps,which reflect differences in cell types,phases of growth,genetic variation,and changing environmental *** ability to prepare *** populations with a uniform length is important for basic biological studies and efficient industrial ***,we systematically investigated how flow rate ratio,poly(ethylene oxide)(PEO)concentration,and channel length affected the length-based separation of *** *** lateral positions of *** cells with varying morphologies in a straight rectangular microchannel were found to be dependent on cell length under the co-flow of viscoelastic and Newtonian ***,we evaluated the ability of the viscoelastic microfluidic device to separate the two groups of *** cells by length(i.e.,1-5μm and>5μm)in terms of extraction purity(EP),extraction yield(EY),and enrichment factor(EF)and confirmed that the device could separate heterogeneous populations of bacteria using elasto-inertial effects.

关键词： viscoelastic separation straight

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