Florida, found flukes similar to C. johnstoni

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The Royal Dublin Fusiliers was an infantry regiment of the British Army created in 1881 and disbanded in 1922. It was one of eight 'Irish' regiments of the army which were raised and garrisoned in Ireland, with the regiment's home depot being located in Naas. The regiment was created via the amalgamation of the Royal Bombay Fusiliers and Royal Madras Fusiliers, two army regiments stationed in India, with militia units from Dublin and Kildare as part of the Childers Reforms. Both battalions of the regiment served in the Second Boer War.

Catatropis johnstoni is a fluke from the United States. It was first described in 1956 by Martin, who had found cercariae released by the snail Cerithidea californica in southwestern California. When the cercaria were fed into chickens, they developed into mature worms; Martin speculated that the natural host was a waterbird. In 1970, a study of helminths of the marsh rice rat in a saltmarsh at Cedar Key, Florida, found flukes similar to C. johnstoni. The fluke was present in 30% of 110 examined rice rats, with the number of worms per rat varying from 1 to 500. Some Cerithidea scalariformis snails from this marsh also released cercariae similar to C. johnstoni from California. When introduced into chickens, marsh rice rats, Mongolian gerbils, golden hamsters, and house mice, these cercariae developed into infectious flukes. Bush and Kinsella, who reported on the result in 1972, regarded the Florida and California flukes as the same species, as there were only minor size differences between them. Because no marsh-inhabiting rodent occurs in both California and Florida, they agreed with Martin that the normal host of C. johnstoni was most likely a bird, perhaps a rail or shorebird. Nevertheless, the rate of infection in the rice rat is too high for it to be just an accidental host; perhaps C. johnstoni is restricted to saltmarshes but not host-specific.