Survey of the crayfish plague pathogen presence in the Netherlands reveals a new Aphanomyces astaci carrier
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
24933021
DOI
10.1016/j.jip.2014.06.002
PII: S0022-2011(14)00085-8
Knihovny.cz E-zdroje
- Klíčová slova
- Aphanomyces astaci, Crayfish plague, Eriocheir sinensis, Host range, Orconectes virilis, Real-time PCR,
- MeSH
- Aphanomyces genetika MeSH
- přenašečství mikrobiologie MeSH
- prevalence MeSH
- severní raci mikrobiologie MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Nizozemsko MeSH
North American crayfish species as hosts for the crayfish plague pathogen Aphanomyces astaci contribute to the decline of native European crayfish populations. At least six American crayfish species have been reported in the Netherlands but the presence of this pathogenic oomycete with substantial conservational impact has not yet been confirmed in the country. We evaluated A. astaci prevalence in Dutch populations of six alien crustaceans using species-specific quantitative PCR. These included three confirmed crayfish carriers (Orconectes limosus, Pacifastacus leniusculus, Procambarus clarkii), two recently introduced but yet unstudied crayfish (Orconectes cf. virilis, Procambarus cf. acutus), and a catadromous crab Eriocheir sinensis. Moderate levels of infection were observed in some populations of O. limosus and P. leniusculus. Positive results were also obtained for E. sinensis and two Dutch populations of O. cf. virilis. English population of the latter species was also found infected, confirming this taxon as another A. astaci carrier in European waters. In contrast, Dutch P. clarkii seem only sporadically infected, and the pathogen was not yet detected in P. cf. acutus. Our study is the first confirmation of crayfish plague infections in the Netherlands and demonstrates substantial variation in A. astaci prevalence among potential hosts within a single region, a pattern possibly linked to their introduction history and coexistence.
Alterra Wageningen University and Research Centre PO Box 47 6700 AA Wageningen The Netherlands
Centre for Environment Fisheries and Aquaculture Science Barrack Road Weymouth Dorset United Kingdom
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