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Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion

Biological invasions are governed by spatial processes that tend to be distributed in non-random ways across landscapes. Characterizing the spatial and temporal heterogeneities of the introduction, establishment, and spread of non-native insect species is a key aspect of effectively managing their g...

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Autores principales: Bayles, Brett R., Thomas, Shyam M., Simmons, Gregory S., Grafton-Cardwell, Elizabeth E., Daugherty, Mathew P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344380/
https://www.ncbi.nlm.nih.gov/pubmed/28278188
http://dx.doi.org/10.1371/journal.pone.0173226
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author Bayles, Brett R.
Thomas, Shyam M.
Simmons, Gregory S.
Grafton-Cardwell, Elizabeth E.
Daugherty, Mathew P.
author_facet Bayles, Brett R.
Thomas, Shyam M.
Simmons, Gregory S.
Grafton-Cardwell, Elizabeth E.
Daugherty, Mathew P.
author_sort Bayles, Brett R.
collection PubMed
description Biological invasions are governed by spatial processes that tend to be distributed in non-random ways across landscapes. Characterizing the spatial and temporal heterogeneities of the introduction, establishment, and spread of non-native insect species is a key aspect of effectively managing their geographic expansion. The Asian citrus psyllid (Diaphorina citri), a vector of the bacterium associated with huanglongbing (HLB), poses a serious threat to commercial and residential citrus trees. In 2008, D. citri first began expanding northward from Mexico into parts of Southern California. Using georeferenced D. citri occurrence data from 2008–2014, we sought to better understand the extent of the geographic expansion of this invasive vector species. Our objectives were to: 1) describe the spatial and temporal distribution of D. citri in Southern California, 2) identify the locations of statistically significant D. citri hotspots, and 3) quantify the dynamics of anisotropic spread. We found clear evidence that the spatial and temporal distribution of D. citri in Southern California is non-random. Further, we identified the existence of statistically significant hotspots of D. citri occurrence and described the anisotropic dispersion across the Southern California landscape. For example, the dominant hotspot surrounding Los Angeles showed rapid and strongly asymmetric spread to the south and east. Our study demonstrates the feasibility of quantitative invasive insect risk assessment with the application of a spatial epidemiology framework.
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spelling pubmed-53443802017-03-29 Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion Bayles, Brett R. Thomas, Shyam M. Simmons, Gregory S. Grafton-Cardwell, Elizabeth E. Daugherty, Mathew P. PLoS One Research Article Biological invasions are governed by spatial processes that tend to be distributed in non-random ways across landscapes. Characterizing the spatial and temporal heterogeneities of the introduction, establishment, and spread of non-native insect species is a key aspect of effectively managing their geographic expansion. The Asian citrus psyllid (Diaphorina citri), a vector of the bacterium associated with huanglongbing (HLB), poses a serious threat to commercial and residential citrus trees. In 2008, D. citri first began expanding northward from Mexico into parts of Southern California. Using georeferenced D. citri occurrence data from 2008–2014, we sought to better understand the extent of the geographic expansion of this invasive vector species. Our objectives were to: 1) describe the spatial and temporal distribution of D. citri in Southern California, 2) identify the locations of statistically significant D. citri hotspots, and 3) quantify the dynamics of anisotropic spread. We found clear evidence that the spatial and temporal distribution of D. citri in Southern California is non-random. Further, we identified the existence of statistically significant hotspots of D. citri occurrence and described the anisotropic dispersion across the Southern California landscape. For example, the dominant hotspot surrounding Los Angeles showed rapid and strongly asymmetric spread to the south and east. Our study demonstrates the feasibility of quantitative invasive insect risk assessment with the application of a spatial epidemiology framework. Public Library of Science 2017-03-09 /pmc/articles/PMC5344380/ /pubmed/28278188 http://dx.doi.org/10.1371/journal.pone.0173226 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication.
spellingShingle Research Article
Bayles, Brett R.
Thomas, Shyam M.
Simmons, Gregory S.
Grafton-Cardwell, Elizabeth E.
Daugherty, Mathew P.
Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion
title Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion
title_full Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion
title_fullStr Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion
title_full_unstemmed Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion
title_short Spatiotemporal dynamics of the Southern California Asian citrus psyllid (Diaphorina citri) invasion
title_sort spatiotemporal dynamics of the southern california asian citrus psyllid (diaphorina citri) invasion
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344380/
https://www.ncbi.nlm.nih.gov/pubmed/28278188
http://dx.doi.org/10.1371/journal.pone.0173226
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