Fisheries Science

, Volume 75, Issue 3, pp 657–663 | Cite as

Henneguya pseudorhinogobii n. sp. (Myxozoa: Myxosporea) parasitizing the gills of the freshwater goby Rhinogobius sp. OR from the Nagara River and redescription of Henneguyarhinogobii

  • Tetsushi Kageyama
  • Tetsuya Yanagida
  • Kenichi Ohara
  • Hiroshi Yokoyama
Original Article Biology

Abstract

Two types of infection with myxosporean parasites, which were different in cyst size, were found from the gill of Rhinogobius sp. OR collected from the Nagara River, Gifu Prefecture, Japan. A myxosporean forming large-type cysts in the gill filament was morphologically identified as Henneguya rhinogobii. Another myxosporean forming small-type cysts was found to be parasitic in the gill lamella. Average spore sizes of the latter myxosporean were 15.8 (range 14.2–17.8) μm in length, 5.3 (4.7–5.8) μm in width, 6.5 (5.9–7.6) μm in polar capsule length and 34.9 (25.3–42.9) μm in caudal appendage length, which were almost identical to those of H. rhinogobii. However, the two were distinguishable by the location in the gill (intrafilamental or intralamellar) and by the difference in the sequence of SSU rDNA (about 96% similarity). We propose the myxosporean forming intralamellar small-type cysts as Henneguya pseudorhinogobii n. sp. and redescribe H. rhinogobii by morphological and molecular studies.

Keywords

Henneguya pseudorhinogobii Henneguyarhinogobii Myxosporean Myxozoa Nagara River New species Rhinogobius sp. OR 

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Copyright information

© The Japanese Society of Fisheries Science 2009

Authors and Affiliations

  • Tetsushi Kageyama
    • 1
  • Tetsuya Yanagida
    • 2
  • Kenichi Ohara
    • 1
  • Hiroshi Yokoyama
    • 3
  1. 1.Gifu Prefectural Research Institute for Freshwater Fish and Aquatic EnvironmentsKakamigaharaJapan
  2. 2.Department of ParasitologyAsahikawa Medical CollegeHokkaidoJapan
  3. 3.Department of Aquatic Biosciences, Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyoJapan

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