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Disease and freeways drive genetic change in urban bobcat populations
Urbanization profoundly impacts animal populations by causing isolation, increased susceptibility to disease, and exposure to toxicants. Genetic effects include reduced effective population size, increased population substructure, and decreased adaptive potential. We investigated the influence that...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BlackWell Publishing Ltd
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4310583/ https://www.ncbi.nlm.nih.gov/pubmed/25667604 http://dx.doi.org/10.1111/eva.12226 |
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author | Serieys, Laurel E K Lea, Amanda Pollinger, John P Riley, Seth P D Wayne, Robert K |
author_facet | Serieys, Laurel E K Lea, Amanda Pollinger, John P Riley, Seth P D Wayne, Robert K |
author_sort | Serieys, Laurel E K |
collection | PubMed |
description | Urbanization profoundly impacts animal populations by causing isolation, increased susceptibility to disease, and exposure to toxicants. Genetic effects include reduced effective population size, increased population substructure, and decreased adaptive potential. We investigated the influence that urbanization and a disease epizootic had on the population genetics of bobcats (Lynx rufus) distributed across a highly fragmented urban landscape. We genotyped more than 300 bobcats, sampled from 1996 to 2012, for variation at nine neutral and seven immune gene-linked microsatellite loci. We found that two freeways are significant barriers to gene flow. Further, a 3-year disease epizootic, associated with secondary anticoagulant rodenticide exposure, caused a population bottleneck that led to significant genetic differentiation between pre- and post-disease populations that was greater than that between populations separated by major freeways for >60 years. However, balancing selection acted on immune-linked loci during the epizootic, maintaining variation at functional regions. Conservation assessments need to assay loci that are potentially under selection to better preserve the adaptive potential of populations at the urban–wildland interface. Further, interconnected regions that contain appropriate habitat for wildlife will be critical to the long-term viability of animal populations in urban landscapes. |
format | Online Article Text |
id | pubmed-4310583 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | BlackWell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-43105832015-02-09 Disease and freeways drive genetic change in urban bobcat populations Serieys, Laurel E K Lea, Amanda Pollinger, John P Riley, Seth P D Wayne, Robert K Evol Appl Original Articles Urbanization profoundly impacts animal populations by causing isolation, increased susceptibility to disease, and exposure to toxicants. Genetic effects include reduced effective population size, increased population substructure, and decreased adaptive potential. We investigated the influence that urbanization and a disease epizootic had on the population genetics of bobcats (Lynx rufus) distributed across a highly fragmented urban landscape. We genotyped more than 300 bobcats, sampled from 1996 to 2012, for variation at nine neutral and seven immune gene-linked microsatellite loci. We found that two freeways are significant barriers to gene flow. Further, a 3-year disease epizootic, associated with secondary anticoagulant rodenticide exposure, caused a population bottleneck that led to significant genetic differentiation between pre- and post-disease populations that was greater than that between populations separated by major freeways for >60 years. However, balancing selection acted on immune-linked loci during the epizootic, maintaining variation at functional regions. Conservation assessments need to assay loci that are potentially under selection to better preserve the adaptive potential of populations at the urban–wildland interface. Further, interconnected regions that contain appropriate habitat for wildlife will be critical to the long-term viability of animal populations in urban landscapes. BlackWell Publishing Ltd 2015-01 2014-12-02 /pmc/articles/PMC4310583/ /pubmed/25667604 http://dx.doi.org/10.1111/eva.12226 Text en © 2014 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Serieys, Laurel E K Lea, Amanda Pollinger, John P Riley, Seth P D Wayne, Robert K Disease and freeways drive genetic change in urban bobcat populations |
title | Disease and freeways drive genetic change in urban bobcat populations |
title_full | Disease and freeways drive genetic change in urban bobcat populations |
title_fullStr | Disease and freeways drive genetic change in urban bobcat populations |
title_full_unstemmed | Disease and freeways drive genetic change in urban bobcat populations |
title_short | Disease and freeways drive genetic change in urban bobcat populations |
title_sort | disease and freeways drive genetic change in urban bobcat populations |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4310583/ https://www.ncbi.nlm.nih.gov/pubmed/25667604 http://dx.doi.org/10.1111/eva.12226 |
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