Diversity and distribution of Aphanomyces astaci in a European hotspot of ornamental crayfish introductions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F24%3A43908071" target="_blank" >RIV/60076658:12520/24:43908071 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41210/24:101079 RIV/00216208:11310/24:10483232

Result on the web

<a href="https://doi.org/10.1016/j.jip.2023.108040" target="_blank" >https://doi.org/10.1016/j.jip.2023.108040</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jip.2023.108040" target="_blank" >10.1016/j.jip.2023.108040</a>

Result language

angličtina

Original language name

Diversity and distribution of Aphanomyces astaci in a European hotspot of ornamental crayfish introductions

Original language description

Ornamental trade has become an important introduction pathway of non-native aquatic species worldwide. Correspondingly, there has been an alarming increase in the number of established crayfish of aquarium origin in Europe over the previous decade. The oomycete Aphanomyces astaci, the pathogen causing crayfish plague responsible for serious declines of European crayfish populations, is dispersed with introduced North American crayfish. The role of ornamental taxa in introducing and spreading different genotypes of this pathogen in open waters remains unclear. We investigated the distribution, prevalence, and diversity of A. astaci in Budapest, Hungary, which became a hotspot of aquarium crayfish introductions. Their establishment in this area was facilitated by locally abundant thermal waters. We screened for A. astaci in six host taxa from 18 sites sampled between 2018 and 2021: five cambarids (Cambarellus patzcuarensis, Faxonius limosus, Procambarus alleni, P. clarkii, P. virginalis) and one native astacid (Pontastacus leptodactylus). The pathogen was confirmed at five sampled sites in four host taxa: P. virginalis, P. clarkii, F. limosus, and for the first time in European open waters also in P. alleni. Genotyping was successful only in individuals from two different brooks where multiple host species coexisted but revealed unexpected patterns. Mitochondrial B-haplogroup of A. astaci, previously usually reported from Pacifastacus leniusculus or infected European species, was detected in P. virginalis at both sites, and in both F. limosus and P. virginalis sampled from a thermally stable tributary of Bar &apos; at brook in 2018. In contrast, A-haplogroup of A. astaci was detected in coexisting F. limosus, P. virginalis and P. clarkii sampled in the same watercourse just a few hundred meters downstream in 2020. Additional genotyping methods indicated that a previously unknown A. astaci strain was associated with the latter haplogroup. One P. virginalis individual from 2020 was apparently co-infected by strains representing both mitochondrial haplogroups. The results indicated multiple sources of A. astaci in Budapest, likely directly associated with the introduction of ornamental species, interspecific transmission of this pathogen among ornamental hosts, and potential for a quick spatial or temporal turnover of dominant A. astaci strains at a certain locality. This highlights that in regions with high richness of potential A. astaci hosts, host taxon/pathogen genotype combinations become unpredictable, which might prevent reliable genotyping of pathogen sources in local crayfish mass mortalities.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10613 - Zoology

Project

<a href="/en/project/GA19-04431S" target="_blank" >GA19-04431S: Temperature driven changes in interactions and ecological roles of prominent crayfish invaders</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Invertebrate Pathology

ISSN

0022-2011

e-ISSN

1096-0805

Volume of the periodical

202

Issue of the periodical within the volume

neuvedeno

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

—

UT code for WoS article

001138912900001

EID of the result in the Scopus database

2-s2.0-85180464497