Notes on an Urceolariid Ciliate found in the Buccal Cavity of the Arctic Lamprey as revealed by Scanning Electron Microscopy

Abstract

A brief description was made on Urceolaria sp.(Peritrichia) by using scanning electron microscopy(SEM). It was unexpectedly discovered during the course of histological studies on the buccal funnel of the ammocoete larvae and teeth of the adult lamprey, Lampetra japonica Martens. This is the first record of urceolariid ciliate from the cyclostome in Japan.