Dermocystidium sp. Infection in Blue Ridge Sculpin Captured in Maryland

Vicki S. Blazer, Nathaniel P. Hitt, Craig D. Snyder, Erin L. Snook, Cynthia R. Adams

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Raised pale cysts were observed on Blue Ridge Sculpin Cottus caeruleomentum during stream fish community surveys in Catoctin Mountain Park, Maryland. When examined histologically, preserved sculpin exhibited multiple cysts containing spherical endospores with a refractile central body characteristic of Dermocystidium spp. Cysts were not observed on the gills or internally. The portion of the watershed in which affected sculpin were observed contained lower than expected numbers of sculpin, raising concerns about the population effects of this infection. A nearby stream lacked sculpin even though they are common in this region, further suggesting the possibility of regional effects. This is the first report of a Dermocystidium infecting any fish species in the eastern United States. Received October 16, 2015; accepted February 14, 2016 Published online July 25, 2016

Original languageEnglish (US)
Pages (from-to)143-149
Number of pages7
JournalJournal of Aquatic Animal Health
Issue number3
StatePublished - Jul 2 2016

All Science Journal Classification (ASJC) codes

  • Aquatic Science


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