Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States

Abstract The oomycete Aphanomyces astaci is an emerging infectious pathogen affecting freshwater crayfish worldwide and is responsible for one of the most severe wildlife pandemics ever reported. The pathogen has caused mass mortalities of freshwater crayfish species in Europe and Asia, and threaten...

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Autores principales:	Laura Martín-Torrijos, María Martínez-Ríos, Gloria Casabella-Herrero, Susan B. Adams, Colin R. Jackson, Javier Diéguez-Uribeondo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/85d1e3ecad6a4772821d27f58a39bd61
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spelling	oai:doaj.org-article:85d1e3ecad6a4772821d27f58a39bd612021-12-02T17:16:17ZTracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States10.1038/s41598-021-88704-82045-2322https://doaj.org/article/85d1e3ecad6a4772821d27f58a39bd612021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88704-8https://doaj.org/toc/2045-2322Abstract The oomycete Aphanomyces astaci is an emerging infectious pathogen affecting freshwater crayfish worldwide and is responsible for one of the most severe wildlife pandemics ever reported. The pathogen has caused mass mortalities of freshwater crayfish species in Europe and Asia, and threatens other susceptible species in Madagascar, Oceania and South America. The pathogen naturally coexists with some North American crayfish species that are its chronic carriers. Presumptions that A. astaci originated in North America are based on disease outbreaks that followed translocations of North American crayfish and on the identification of the pathogen mainly in Europe. We studied A. astaci in the southeastern US, a center of freshwater crayfish diversity. In order to decipher the origin of the pathogen, we investigated (1) the distribution and haplotype diversity of A. astaci, and (2) whether there are crayfish species-specificities and/or geographical restrictions for A. astaci haplotypes. A total of 132 individuals, corresponding to 19 crayfish species and one shrimp species from 23 locations, tested positive for A. astaci. Mitochondrial rnnS and rnnL sequences indicated that A. astaci from the southeastern US exhibited the highest genetic diversity so far described for the pathogen (eight haplotypes, six of which we newly describe). Our findings that A. astaci is widely distributed and genetically diverse in the region supports the hypothesis that the pathogen originated in the southeastern US. In contrast to previous assumptions, however, the pathogen exhibited no clear species-specificity or geographical patterns.Laura Martín-TorrijosMaría Martínez-RíosGloria Casabella-HerreroSusan B. AdamsColin R. JacksonJavier Diéguez-UribeondoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Laura Martín-Torrijos María Martínez-Ríos Gloria Casabella-Herrero Susan B. Adams Colin R. Jackson Javier Diéguez-Uribeondo Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States
description	Abstract The oomycete Aphanomyces astaci is an emerging infectious pathogen affecting freshwater crayfish worldwide and is responsible for one of the most severe wildlife pandemics ever reported. The pathogen has caused mass mortalities of freshwater crayfish species in Europe and Asia, and threatens other susceptible species in Madagascar, Oceania and South America. The pathogen naturally coexists with some North American crayfish species that are its chronic carriers. Presumptions that A. astaci originated in North America are based on disease outbreaks that followed translocations of North American crayfish and on the identification of the pathogen mainly in Europe. We studied A. astaci in the southeastern US, a center of freshwater crayfish diversity. In order to decipher the origin of the pathogen, we investigated (1) the distribution and haplotype diversity of A. astaci, and (2) whether there are crayfish species-specificities and/or geographical restrictions for A. astaci haplotypes. A total of 132 individuals, corresponding to 19 crayfish species and one shrimp species from 23 locations, tested positive for A. astaci. Mitochondrial rnnS and rnnL sequences indicated that A. astaci from the southeastern US exhibited the highest genetic diversity so far described for the pathogen (eight haplotypes, six of which we newly describe). Our findings that A. astaci is widely distributed and genetically diverse in the region supports the hypothesis that the pathogen originated in the southeastern US. In contrast to previous assumptions, however, the pathogen exhibited no clear species-specificity or geographical patterns.
format	article
author	Laura Martín-Torrijos María Martínez-Ríos Gloria Casabella-Herrero Susan B. Adams Colin R. Jackson Javier Diéguez-Uribeondo
author_facet	Laura Martín-Torrijos María Martínez-Ríos Gloria Casabella-Herrero Susan B. Adams Colin R. Jackson Javier Diéguez-Uribeondo
author_sort	Laura Martín-Torrijos
title	Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States
title_short	Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States
title_full	Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States
title_fullStr	Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States
title_full_unstemmed	Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States
title_sort	tracing the origin of the crayfish plague pathogen, aphanomyces astaci, to the southeastern united states
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/85d1e3ecad6a4772821d27f58a39bd61
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Tracing the origin of the crayfish plague pathogen, Aphanomyces astaci, to the Southeastern United States

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