Abstract
The deliberate introduction of new species can have unexpected negative consequences1,2 and we show here how a recently introduced fish, the invasive Asian cyprinid Pseudorasbora parva, is causing increased mortality and totally inhibiting spawning in an already endangered native fish, the European cyprinid Leucaspius delineatus. This threat is caused by an infectious pathogen, a rosette-like intracellular eukaryotic parasite that is a deadly, non-specific agent. It is probably carried by healthy Asian fish, and could decrease fish biodiversity in Europe, as well as having implications for commercial aquaculture.
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Supplementary information
Supplementary information
Summary of methods used for the rosette-like agent characterization. (DOC 41 kb)
Supplementary Figure S1
Experimental set-up for the cohabitation studies. (DOC 253 kb)
Supplementary Figure S2
Multifocal granulomatous lesions in the ovary of L. delineatus. (DOC 2624 kb)
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Gozlan, R., St-Hilaire, S., Feist, S. et al. Disease threat to European fish. Nature 435, 1046 (2005). https://doi.org/10.1038/4351046a
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DOI: https://doi.org/10.1038/4351046a
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