caa a22 4500 606165037 CHVBK 20210128100651.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10144-015-0477-2 doi (NATIONALLICENCE)springer-10.1007/s10144-015-0477-2 Experimental island invasion of house mice [Elektronische Daten] [Helen Nathan, Mick Clout, Jamie MacKay, Elaine Murphy, James Russell] The ability of invasive species to recurrently establish populations from small numbers of founders, while threatened species struggle at the same low population sizes, is a paradox in conservation biology. Little is known about the mechanisms contributing to the post-arrival success of low density invasive populations as most invasive species research focuses on established, high density populations. Experimental studies are powerful, but generally limited to laboratory or invertebrate experiments. Here, we experimentally demonstrate that vertebrate mammal invasion from a very small (n=2) number of founders follows relatively simple deterministic predictions. An intentional island invasion of introduced house mice (Mus musculus Linnaeus) from one founding pair closely tracked the density dependent logistic growth curve and reached the seasonal carrying capacity of a previously extant population in only 5months. Carrying capacity reflected both density dependent and independent processes. In contrast to the previously incumbent population, the invading population retained a marked genetic signal of its recent founder event, but the populations were otherwise demographically indistinguishable. Stochastic events such as individual variability, supplemental immigration and ecological release, but not Allee effects, played important roles during colonisation, but following establishment dynamics rapidly became deterministic, with little demographic impact of reduced genetic diversity. The small population paradigm appears to have little influence on the population dynamics of highly successful invasive species. The Society of Population Ecology and Springer Japan, 2015 Bottleneck nationallicence Carrying capacity nationallicence Founder nationallicence Incursion nationallicence Logistic nationallicence Mus musculus nationallicence Nathan Helen School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut Clout Mick School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut MacKay Jamie School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut Murphy Elaine Department of Conservation, Private Bag 4715, Christchurch, New Zealand aut Russell James School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut Population Ecology Springer Japan 57/2(2015-04-01), 363-371 1438-3896 57:2<363 2015 57 10144 https://doi.org/10.1007/s10144-015-0477-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10144-015-0477-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nathan Helen School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut NATIONALLICENCE 700 1- Clout Mick School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut NATIONALLICENCE 700 1- MacKay Jamie School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut NATIONALLICENCE 700 1- Murphy Elaine Department of Conservation, Private Bag 4715, Christchurch, New Zealand aut NATIONALLICENCE 700 1- Russell James School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand aut NATIONALLICENCE 773 0- Population Ecology Springer Japan 57/2(2015-04-01), 363-371 1438-3896 57:2<363 2015 57 10144