Control of the Daily Rhythms by Photoperiods in Protomont Detachment and Theront Excystment of the Parasitic Ciliate <i>Cryptocaryon irritans</i>

DOI Web Site Web Site 1 Citations 7 References
  • Watanabe Yuho
    Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • How Kah Hui
    Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Zenke Kosuke
    Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Itoh Naoki
    Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Yoshinaga Tomoyoshi
    Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences, The University of Tokyo

Bibliographic Information

Other Title
  • Control of the Daily Rhythms by Photoperiods in Protomont Detachment and Theront Excystment of the Parasitic Ciliate Cryptocaryon irritans

Search this article

Abstract

<p>Cryptocaryon irritans has clear daily rhythms in protomont detachment from fish and theront excystment from tomonts. ​While the rhythms seem to be regulated by photoperiods, it has not been confirmed. ​We investigated whether the daily rhythms of the parasite would be controlled by giving different photoperiods of 12 h light and 12 h dark (06:00–18:00 L and 18:00–06:00 D; 15:00–03:00 L and 03:00–15:00 D) to infected fish and tomonts. ​Protomont detachment and theronts excystment mostly occurred in the last 3 h of the dark period and from 6 h to 3 h before the end of dark period, respectively, indicating that the rhythms are controlled by photoperiods.</p>

Journal

  • Fish Pathology

    Fish Pathology 55 (2), 38-41, 2020-06-15

    The Japanese Society of Fish Pathology

Citations (1)*help

See more

References(7)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top