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The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America
The fall armyworm (Spodoptera frugiperda) is a moth pest native to the Western Hemisphere that has recently become a global problem, invading Africa, Asia, and Australia. The species has a broad host range, long-distance migration capability, and a propensity for the generation of pesticide resistan...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Public Library of Science
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7398513/ https://www.ncbi.nlm.nih.gov/pubmed/32745105 http://dx.doi.org/10.1371/journal.pone.0236759 |
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author | Nagoshi, Rodney N. Cañarte, Ernesto Navarrete, Bernardo Pico, Jimmy Bravo, Catalina Arias de López, Myriam Garcés-Carrera, Sandra |
author_facet | Nagoshi, Rodney N. Cañarte, Ernesto Navarrete, Bernardo Pico, Jimmy Bravo, Catalina Arias de López, Myriam Garcés-Carrera, Sandra |
author_sort | Nagoshi, Rodney N. |
collection | PubMed |
description | The fall armyworm (Spodoptera frugiperda) is a moth pest native to the Western Hemisphere that has recently become a global problem, invading Africa, Asia, and Australia. The species has a broad host range, long-distance migration capability, and a propensity for the generation of pesticide resistance traits that make it a formidable invasive threat and a difficult pest to control. While fall armyworm migration has been extensively studied in North America, where annual migrations of thousands of kilometers are the norm, migration patterns in South America are less understood. As a first step to address this issue we have been genetically characterizing fall armyworm populations in Ecuador, a country in the northern portion of South America that has not been extensively surveyed for this pest. These studies confirm and extend past findings indicating similarities in the fall armyworm populations from Ecuador, Trinidad-Tobago, Peru, and Bolivia that suggest substantial migratory interactions. Specifically, we found that populations throughout Ecuador are genetically homogeneous, indicating that the Andes mountain range is not a long-term barrier to fall armyworm migration. Quantification of genetic variation in an intron sequence describe patterns of similarity between fall armyworm from different locations in South America with implications for how migration might be occurring. In addition, we unexpectedly found these observations only apply to one subset of fall armyworm (the C-strain), as the other group (R-strain) was not present in Ecuador. The results suggest differences in migration behavior between fall armyworm groups in South America that appear to be related to differences in host plant preferences. |
format | Online Article Text |
id | pubmed-7398513 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-73985132020-08-14 The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America Nagoshi, Rodney N. Cañarte, Ernesto Navarrete, Bernardo Pico, Jimmy Bravo, Catalina Arias de López, Myriam Garcés-Carrera, Sandra PLoS One Research Article The fall armyworm (Spodoptera frugiperda) is a moth pest native to the Western Hemisphere that has recently become a global problem, invading Africa, Asia, and Australia. The species has a broad host range, long-distance migration capability, and a propensity for the generation of pesticide resistance traits that make it a formidable invasive threat and a difficult pest to control. While fall armyworm migration has been extensively studied in North America, where annual migrations of thousands of kilometers are the norm, migration patterns in South America are less understood. As a first step to address this issue we have been genetically characterizing fall armyworm populations in Ecuador, a country in the northern portion of South America that has not been extensively surveyed for this pest. These studies confirm and extend past findings indicating similarities in the fall armyworm populations from Ecuador, Trinidad-Tobago, Peru, and Bolivia that suggest substantial migratory interactions. Specifically, we found that populations throughout Ecuador are genetically homogeneous, indicating that the Andes mountain range is not a long-term barrier to fall armyworm migration. Quantification of genetic variation in an intron sequence describe patterns of similarity between fall armyworm from different locations in South America with implications for how migration might be occurring. In addition, we unexpectedly found these observations only apply to one subset of fall armyworm (the C-strain), as the other group (R-strain) was not present in Ecuador. The results suggest differences in migration behavior between fall armyworm groups in South America that appear to be related to differences in host plant preferences. Public Library of Science 2020-08-03 /pmc/articles/PMC7398513/ /pubmed/32745105 http://dx.doi.org/10.1371/journal.pone.0236759 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 Nagoshi, Rodney N. Cañarte, Ernesto Navarrete, Bernardo Pico, Jimmy Bravo, Catalina Arias de López, Myriam Garcés-Carrera, Sandra The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America |
title | The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America |
title_full | The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America |
title_fullStr | The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America |
title_full_unstemmed | The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America |
title_short | The genetic characterization of fall armyworm populations in Ecuador and its implications to migration and pest management in the northern regions of South America |
title_sort | genetic characterization of fall armyworm populations in ecuador and its implications to migration and pest management in the northern regions of south america |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7398513/ https://www.ncbi.nlm.nih.gov/pubmed/32745105 http://dx.doi.org/10.1371/journal.pone.0236759 |
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