Aphanomyces astaci genotypes involved in recent crayfish plague outbreaks in central Italy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10388817" target="_blank" >RIV/00216208:11310/18:10388817 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3354/dao03275" target="_blank" >https://doi.org/10.3354/dao03275</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3354/dao03275" target="_blank" >10.3354/dao03275</a>

Result language

angličtina

Original language name

Aphanomyces astaci genotypes involved in recent crayfish plague outbreaks in central Italy

Original language description

The oomycete Aphanomyces astaci is the causative agent of crayfish plague in native European freshwater crayfish. Molecular analyses showed that several distinct genotype groups of this pathogen, apparently associated with different original host taxa, are present in Europe. Tracking their distribution may contribute to understanding the introduction pathways of A. astaci. We used microsatellite markers to genotype the pathogen strains involved in 7 mass mortalities of the endangered indigenous crayfish Austropotamobius pallipes that occurred between 2009 and 2016 in the Abruzzi and Molise regions, central Italy. Three A. astaci genotype groups (A, B, and D, with the latter represented by 2 distinct multilocus genotypes) were identified, suggesting the existence of multiple infection sources even in a relatively small area. Most crayfish plague episodes were due to genotype groups associated with the North American host species Pacifastacus leniusculus and Procambarus clarkii, although these crayfish are not widespread in the study area. A. astaci genotype group A was detected not only in crayfish plague outbreaks but also in apparently healthy Astacus leptodactylus imported for human consumption from Armenia and kept alive in an aquaculture facility. Imports of chronically infected A. leptodactylus from Armenia, Turkey, and possibly Eastern Europe are an underestimated introduction pathway for A. astaci. Although we cannot exclude the presence of latently infected native populations of A. pallipes in the region, A. astaci infections in legally imported crayfish species considered vulnerable to crayfish plague may represent further reservoirs of A. astaci; this should be reflected in the policies regulating the trade of live crayfish.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10618 - Ecology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Diseases of Aquatic Organisms

ISSN

0177-5103

e-ISSN

—

Volume of the periodical

130

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

209-219

UT code for WoS article

000446369800005

EID of the result in the Scopus database

2-s2.0-85055042121