Apparent interspecific transmission of Aphanomyces astaci from invasive signal to virile crayfish in a sympatric wild population
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články
PubMed
28216093
DOI
10.1016/j.jip.2017.02.003
PII: S0022-2011(17)30086-1
Knihovny.cz E-zdroje
- Klíčová slova
- Orconectes cf. virilis, Pacifastacus leniusculus, Transmission pathways, Wildlife disease,
- MeSH
- Aphanomyces patogenita MeSH
- infekce přenos MeSH
- nemoci ryb přenos MeSH
- severní raci mikrobiologie MeSH
- virulence MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Spojené království MeSH
The crayfish plague pathogen (Aphanomyces astaci) causes mass mortalities of European crayfish when transmitted from its original North American crayfish hosts. Little is known, however, about interspecific transmission of the pathogen between different American crayfish species, although evidence from trade of ornamental crayfish suggests this may happen in captivity. We screened signal and virile crayfish for A. astaci at allopatric and sympatric sites in a UK river. Whilst the pathogen was detected in signal crayfish from both sites, infected virile crayfish were only found in sympatry. Genotyping of A. astaci from virile crayfish suggested the presence of a strain related to one infecting British signal crayfish. We conclude that virile crayfish likely contracted A. astaci interspecifically from infected signal crayfish. Interspecific transmission of A. astaci strains differing in virulence between American carrier species may influence the spread of this pathogen in open waters with potential exacerbated effects on native European crayfish.
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