Incidence of piscine erythrocytic necrosis (PEN) andGlugea hertwigi (Weissenberg) in rainbow smelt (Osmerus mordax mitchill) in selected Massachusetts streams |
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| Authors: | Doris Jimenez Joseph E Pelczarski H Russell Iwanowicz |
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| Institution: | 1. Massachusetts Division of Marine Fisheries, Cat Cove Marine Laboratory, 92 Fort Avenue, 01970, Salem, Massachusetts
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| Abstract: | Smelt (Osmerus mordax) from six rivers along the coast of Massachusetts were examined for the microsporidianGlugea hertwigi and piscine erythrocytic necrosis (PEN), a viral blood disease. Of the 485 smelt sampled, 13.4% were affected byGlugea. Incidence ranged from 18.0% in the Town River to 0% in the Parker River. PEN was observed in all river systems. Incidence ranged from 97% in the Jones to 61% in the Parker River. Individual intensity of infection was low, with the majority of fish having less than 1% of their erythrocytes affected. The highest intensity for an individual specimen was 4.68%. |
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