A staining method for detection of Enterocytozoon hepatopenaei (EHP) spores with calcofluor white
2020
Abstract A fluorescent stain, calcofluor white (CFW), was used for detection of spores of the microsporidium Enterocytozoon hepatopenaei (EHP). EHP spores in suspension, in feces, or in the infected hepatopancreas of the shrimp Penaeus vannamei, can be easily stained with this chitin and cellulose binding dye to show distinct blue-white fluorescent oval walls. The dye does not stain the host tissues. EHP spores showed orange-red spots by staining with hematoxylin and phloxine (H&P) in the section. CFW staining provides a simple and rapid method for determining the presence of EHP spores in fecal or tissue samples.
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