Abstract
The viability of Cryptosporidium parvum oocysts ingested by Artemia franciscana metanauplii was evaluated using two fluorogenic vital dyes. There was no significant difference (p = 0.09) between the viability of oocysts maintained in saline (control) and those recovered from the digestive tract of the microcrustacean 24 h after ingestion (95 vs 90% viable oocysts). The results suggest that Artemia, used as a life food in fish larviculture, may act as a vehicle for transmission of piscine cryptosporidiosis caused by Cryptosporidium molnari and Cryptosporidium scophthalmi.
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