Soft tunic syndrome in the edible ascidian Halocynthia roretzi is caused by a kinetoplastid protist.

@article{Kumagai2011SoftTS,
  title={Soft tunic syndrome in the edible ascidian Halocynthia roretzi is caused by a kinetoplastid protist.},
  author={Akira Kumagai and Atsushi Suto and Hiroshi Ito and Toru Tanabe and Jun-Young Song and S Kitamura and Euichi Hirose and Takashi Kamaishi and Satoshi Miwa},
  journal={Diseases of aquatic organisms},
  year={2011},
  volume={95 2},
  pages={153-61}
}
An etiological study was conducted to clarify whether the flagellate-like cells found in histological preparations of the tunic of diseased Halocynthia roretzi (Drasche) were the causative agent of soft tunic syndrome in this ascidian. When pieces of softened diseased tunic were incubated overnight in sterile seawater, live flagellated cells, which were actively swimming in the seawater, were observed in 47 out of 61 diseased ascidians (77%), but not in moribund or abnormal individuals with… CONTINUE READING

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Morphological characterization of the tunic in the edible ascidian Halocynthia roretzi ( Drasche ) , with remarks on ‘ soft tunic syndrome ’ in aquaculture

S Ohtake, K Azumi
J Fish Dis • 2009

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