A1 Journal article (refereed)
Does the freshwater mussel Anodonta anatina remove the fish pathogen Flavobacterium columnare from water? (2022)

Hajisafarali, M., Aaltonen, S., Pulkkinen, K., & Taskinen, J. (2022). Does the freshwater mussel Anodonta anatina remove the fish pathogen Flavobacterium columnare from water?. Hydrobiologia, 849(4), 1067-1081. https://doi.org/10.1007/s10750-021-04769-6

JYU authors or editors

Publication details

All authors or editorsHajisafarali, Mahsa; Aaltonen, Sari; Pulkkinen, Katja; Taskinen, Jouni

Journal or seriesHydrobiologia



Publication year2022

Publication date05/12/2021


Issue number4

Pages range1067-1081


Publication countryNetherlands

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/78935


Global decline of freshwater mussels (Unionoida) is threatening biodiversity and the essential ecosystem services that mussels provide. As filter-feeding organisms, freshwater mussels remove phytoplankton and suspended particles from the water. By filtering bacteria, freshwater mussels also decrease pathogen loads in the water. The objective of this study was to evaluate whether the common freshwater bivalve Anodonta anatina (duck mussel) could remove the bacterial fish pathogen Flavobacterium columnare from the water. Mussels reduced bacteria in both of the two experiments performed, so that the bacterial concentration at the end of the 96-h monitoring in mussel treatments was only 0.3–0.5 times that of the controls. Surprisingly, mussels did not reduce algal cell concentration statistically significantly. Mussel behavior (shell openness, foot position, and movement) was not affected by the presence of bacteria or algae, except for biodeposition formation, which was greatest in algal-fed treatments, followed by bacterial-fed treatments and controls, respectively. The intestines of bacteria-incubated A. anatina harbored F. columnare, suggesting that mussels ingested the bacteria. Present results suggest that freshwater mussels may also have a potential to mitigate aquaculture pathogen problems, as well as play a role in water quality management.

KeywordsbivalviaAnodonta anatinafiltrationpathogensbacteriafish diseasesecosystem services

Free keywordsbiofiltration; columnaris disease; duck mussel; Unionidae; bacteria; ecosystem services

Contributing organizations

Ministry reportingYes

Reporting Year2022

JUFO rating1

Last updated on 2024-15-06 at 23:05