Show simple item record

dc.contributor.authorColeman, Rhys
dc.contributor.authorGauffre, B
dc.contributor.authorPavlova, Alexandra
dc.contributor.authorBeheregaray, Luciano Bellagamba
dc.contributor.authorKearns, Joanne
dc.contributor.authorLyon, Jarod
dc.contributor.authorSasaki, Minami
dc.contributor.authorLeblois, R
dc.contributor.authorSgro, C
dc.contributor.authorSunnucks, Paul
dc.date.accessioned2018-08-30T00:35:24Z
dc.date.available2018-08-30T00:35:24Z
dc.date.issued2018-01-12
dc.identifier.citationColeman, R., Gauffre, B., Pavlova, A., Beheregaray, L. B., Kearns, J., Lyon, J., Sasaki, M., Leblois, R., Sgro, C. & Sunnucks, P., (2018). Artificial barriers prevent genetic recovery of small isolated populations of a low-mobility freshwater fish. Heredity,120:515–532.en_US
dc.identifier.issn0018-067X
dc.identifier.urihttp://hdl.handle.net/2328/38220
dc.descriptionThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons. org/licenses/by/4.0/.en_US
dc.description.abstractHabitat loss and fragmentation often result in small, isolated populations vulnerable to environmental disturbance and loss of genetic diversity. Low genetic diversity can increase extinction risk of small populations by elevating inbreeding and inbreeding depression, and reducing adaptive potential. Due to their linear nature and extensive use by humans, freshwater ecosystems are especially vulnerable to habitat loss and fragmentation. Although the effects of fragmentation on genetic structure have been extensively studied in migratory fishes, they are less understood in low-mobility species. We estimated impacts of instream barriers on genetic structure and diversity of the low-mobility river blackfish (Gadopsis marmoratus) within five streams separated by weirs or dams constructed 45–120 years ago. We found evidence of small-scale (<13 km) genetic structure within reaches unimpeded by barriers, as expected for a fish with low mobility. Genetic diversity was lower above barriers in small streams only, regardless of barrier age. In particular, one isolated population showed evidence of a recent bottleneck and inbreeding. Differentiation above and below the barrier (FST = 0.13) was greatest in this stream, but in other streams did not differ from background levels. Spatially explicit simulations suggest that short-term barrier effects would not be detected with our data set unless effective population sizes were very small (<100). Our study highlights that, in structured populations, the ability to detect short-term genetic effects from barriers is reduced and requires more genetic markers compared to panmictic populations. We also demonstrate the importance of accounting for natural population genetic structure in fragmentation studies.en_US
dc.description.sponsorshipThis work was supported by an Australian Research Council Linkage Grant (LP110200017) to Monash University, Flinders University of South Australia, the University of Canberra, and University of Montana. Funding and other support was also contributed by industry partner organizations namely, Melbourne Water Corporation, ACTEW Corporation, Victorian Department of Sustainability and Environment (now Department of Environment, Land, Water and Planning) and Fisheries Victoria (now Department of Economic Development, Jobs, Transport and Resources). L.B.B. was supported by an ARC FT130101068 grant. This publication has been written with the support of the AgreenSkills+fellowship programme, which has received funding from the EU’s Seventh Framework Programme under grant agreement N° FP7-609398 (AgreenSkills+contract). Part of this work was carried out by using the resources of the INRA MIGALE (http://migale.jouy.inra.fr) and GENOTOUL (Toulouse Midi-Pyrénées) bioinformatics platforms and the Montpellier Bioinformatics Biodiversity platform services. RL was supported by the Agence Nationale de la Recherche (project GENOSPACE ANR-16-CE02-0008).en_US
dc.language.isoenen_US
dc.publisherNature Publishing Groupen_US
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons. org/licenses/by/4.0/.en_US
dc.titleArtificial barriers prevent genetic recovery of small isolated populations of a low-mobility freshwater fishen_US
dc.typeArticleen
dc.relation.grantnumberARC/LP110200017en_US
dc.relation.grantnumberARC/FT130101068en_US
dc.identifier.doihttps://doi.org/10.1038/s41437-017-0008-3en
dc.rights.holder© The Author(s) 2018. This article is published with open accessen_US
dc.rights.licenseCC-BY


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record