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Diseases of Aquatic Organisms

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DAO 149:47-51 (2022)  -  DOI:

Histopathological survey for parasite groups in Gammarus varsoviensis (Amphipoda)

Daniel A. Warren1, Amy L. Burgess2,3, Felix Karemera3, Karolina Bacela-Spychalska4, Grant D. Stentiford5, Jamie Bojko2,3,*

1Department of Biosciences, Swansea University, Swansea SA2 8PP, UK
2National Horizons Centre, Teesside University, Darlington DL1 1HG, UK
3School of Health and Life Sciences, Teesside University, Middlesbrough TS1 3BX, UK
4Department of Invertebrate Zoology and Hydrobiology, Faculty of Biology and Environmental Protection, University of Łódź, 90-237 Łódź, Poland
5Centre for Environment, Fisheries and Aquaculture Science, Weymouth DT4 8UB, UK
*Corresponding author:

ABSTRACT: Invasive non-native amphipods (Crustacea) are becoming a model system in which to explore the impact and diversity of invasive parasites—parasites that are carried along an invasion route with their hosts. Gammarus varsoviensis is a freshwater amphipod species that has a recently explored invasion history. We provide a histopathological survey for a putatively invasive non-native population of this amphipod, identifying 8 symbiotic groups: Acanthocephala, Rotifera, Digenea, ciliated protozoa, Haplosporidia, Microsporidia, ‘Candidatus Aquirickettsiella’, and a putative nudivirus, at various prevalence. Our survey indicates that the parasites have no sex bias and that each has the potential to be carried in either sex along an invasion route. We discuss the pathology and prevalence of the above symbiotic groups and whether those that are parasitic may pose a risk if G. varsoviensis were to carry them to novel locations.

KEY WORDS: Microsporidia · Haplosporidia · Virus · Candidatus Aquirickettsiella · Native · Invasive

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Cite this article as: Warren DA, Burgess AL, Karemera F, Bacela-Spychalska K, Stentiford GD, Bojko J (2022) Histopathological survey for parasite groups in Gammarus varsoviensis (Amphipoda). Dis Aquat Org 149:47-51.

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