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An eimerid apicomplexan causing pathology in wild and farmed lumpfish, Cyclopterus lumpus

TitleAn eimerid apicomplexan causing pathology in wild and farmed lumpfish, Cyclopterus lumpus
Publication TypeJournal Article
Year of Publication2018
AuthorsKristmundsson, A, Hansen, H, Alarcón, M, Freeman, MA
JournalBulletin-European Association of Fish Pathologists
Volume38
Issue5
Pagination213
Abstract
Due to an increasing demand for lumpfish, Cyclopterus lumpus, as a biological control against sea
lice in Atlantic salmon farms, infectious agents infecting lumpfish have lately received considerable
attention. Here we report an eimerid apicomplexan from farmed juveniles in Norway and
wild-caught broodfish from Iceland. It infects the intestinal tract, causing clinical signs and severe
histopathology. Both merogonic and gamogonic stages were detected, suggesting a monoxenous
life cycle, but no mature oocysts were observed. Therefore, further research is needed to establish
its generic identity and to fully understand the potential negative impact this apicomplexan has to
the aquaculture industry. 
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