Skip navigation
Skip navigation

Creating new evolutionary pathways through bioinvasion: the population genetics of brushtail possums in New Zealand

Sarre, Stephen; Aitken, Nicola; Adamack, Aaron T.; Macdonald, Anna J; Gruber, Bernd; Cowan, Phil

Description

Rapid increases in global trade and human movement have created novel mixtures of organisms bringing with them the potential to rapidly accelerate the evolution of new forms. The common brushtail possum (Trichosurus vulpecula), introduced into New Zealand from Australia in the 19th century, is one such species having been sourced from multiple populations in its native range. Here, we combine microsatellite DNA- and GIS-based spatial data to show that T. vulpecula originating from at least two...[Show more]

dc.contributor.authorSarre, Stephen
dc.contributor.authorAitken, Nicola
dc.contributor.authorAdamack, Aaron T.
dc.contributor.authorMacdonald, Anna J
dc.contributor.authorGruber, Bernd
dc.contributor.authorCowan, Phil
dc.date.accessioned2015-12-10T23:22:44Z
dc.identifier.issn0962-1083
dc.identifier.urihttp://hdl.handle.net/1885/66642
dc.description.abstractRapid increases in global trade and human movement have created novel mixtures of organisms bringing with them the potential to rapidly accelerate the evolution of new forms. The common brushtail possum (Trichosurus vulpecula), introduced into New Zealand from Australia in the 19th century, is one such species having been sourced from multiple populations in its native range. Here, we combine microsatellite DNA- and GIS-based spatial data to show that T. vulpecula originating from at least two different Australian locations exhibit a population structure that is commensurate with their introduction history and which cannot be explained by landscape features alone. Most importantly, we identify a hybrid zone between the two subspecies which appears to function as a barrier to dispersal. When combined with previous genetic, morphological and captive studies, our data suggest that assortative mating between the two subspecies may operate at a behavioural or species recognition level rather than through fertilization, genetic incompatibility or developmental inhibition. Nevertheless, hybridization between the two subspecies of possum clearly occurs, creating the opportunity for novel genetic combinations that would not occur in their natural ranges and which is especially likely given that multiple contact zones occur in New Zealand. This discovery has implications for wildlife management in New Zealand because multiple contact zones are likely to influence the dispersal patterns of possums and because differential susceptibility to baiting with sodium fluoroacetate between possums of different origins may promote novel genetic forms.
dc.publisherBlackwell Publishing Ltd
dc.sourceMolecular Ecology
dc.titleCreating new evolutionary pathways through bioinvasion: the population genetics of brushtail possums in New Zealand
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume23
dc.date.issued2014
local.identifier.absfor060409 - Molecular Evolution
local.identifier.absfor060411 - Population, Ecological and Evolutionary Genetics
local.identifier.absfor060207 - Population Ecology
local.identifier.ariespublicationu9511635xPUB1318
local.type.statusPublished Version
local.contributor.affiliationSarre, Stephen, University of Canberra
local.contributor.affiliationAitken, Nicola, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationAdamack, Aaron T., University of Canberra
local.contributor.affiliationMacdonald, Anna J, University of Canberra
local.contributor.affiliationGruber, Bernd, University of Canberra
local.contributor.affiliationCowan, Phil, Landcare Research
local.description.embargo2037-12-31
local.bibliographicCitation.startpage3419
local.bibliographicCitation.lastpage3433
local.identifier.doi10.1111/mec.12834
local.identifier.absseo960404 - Control of Animal Pests, Diseases and Exotic Species in Forest and Woodlands Environments
local.identifier.absseo960403 - Control of Animal Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
dc.date.updated2015-12-10T10:34:02Z
local.identifier.scopusID2-s2.0-84903973621
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Sarre_Creating_new_evolutionary_2014.pdf2.31 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator