RT Journal Article T1 Fish and Bivalve Therapeutants in Freshwater Mussel Captive Breeding—A First Summary of Practical Experiences in European Facilities T2 Terapéuticos en peces y bivalvos utilizados en la cría en cautividad de unionidos A1 Denic, Marco A1 Nakamura, Keiko A1 Varela Dopico, Catarina A1 Strachan, Ben A1 Daill, Daniel A1 Gaehrken, Jakob A1 Taylor, John A1 Grunicke, Felix K1 Pathogen K1 Host fish K1 Freshwater mussel K1 Excystment K1 Fish health K1 Juvenile mussel K1 Parasitic phase K1 Responsive disease treatment AB A significant part of freshwater mussel populations has strongly declined and many species are severely threatened nowadays. Captive breeding programs often form a central part of conservation strategies. As the life cycles of many mussel species include an obligate parasitic phase, host fish health is a crucial component of successful mussel breeding efforts. However, information about the safe application of fish therapeutants in mussel captive breeding is scarce. This article summarizes information about practical experiences in Europe. In total, eight different therapeutants were used to treat infestations of eight pathogens. Treatment success varied depending on pathogen and prevalence when treatments were initiated. Mussels did not seem to be affected by treatments, especially as long as they remained encysted. In a second step, Virkon S was applied to treat a fungal infection in tanks with brown trout (Salmo trutta) carrying encysted freshwater pearl mussel (Margaritifera margaritifera) glochidia and to disinfect juvenile mussel rearing containers. In both cases, mussels were not harmed and treated fish fully recovered. Results indicate that certain therapeutants can be used safely and successfully at different stages of breeding cycles. Nevertheless, there is still a lack of standard protocols, which would improve efficiency and the safety of treatments. PB MDPI YR 2024 FD 2024 LK https://hdl.handle.net/10347/37537 UL https://hdl.handle.net/10347/37537 LA eng NO Denic, M.; Nakamura, K.; Varela-Dopico, C.; Strachan, B.; Daill, D.; Gaehrken, J.; Taylor, J.; Grunicke, F. Fish and Bivalve Therapeutants in Freshwater Mussel Captive Breeding—A First Summary of Practical Experiences in European Facilities. Diversity 2024, 16, 78 NO This research was carried out within the project “MARA-Margaritifera Restoration Alliance”. The project “MARA” is funded by the Federal Agency for Nature Conservation with resources from the German Federal Ministry for the Environment, Nature Conservation, Nuclear Safety and Consumer Protection and the Bavarian Naturschutzfonds, grant number 3520685A-G45. DS Minerva RD 27 abr 2026