Fisheries Science

, Volume 74, Issue 1, pp 137–145

Effects of irradiance of various wavelengths from light-emitting diodes on the growth of the harmful dinoflagellate Heterocapsa circularisquama and the diatom Skeletonema costatum

  • Seok Jin Oh
  • Dae -Il Kim
  • Takao Sajima
  • Yohei Shimasaki
  • Yukihiko Matsuyama
  • Yuji Oshima
  • Tsuneo Honjo
  • Han -Soeb Yang
Article

DOI: 10.1111/j.1444-2906.2007.01503.x

Cite this article as:
Oh, S.J., Kim, D.I., Sajima, T. et al. Fish Sci (2008) 74: 137. doi:10.1111/j.1444-2906.2007.01503.x

Abstract

We investigated the effects of specific light wavelengths from light-emitting diodes (LEDs) on the growth of the dinoflagellate Heterocapsa circularisquama, which kills bivalves, and the diatom Skeletonema costatum, which is an important food source for bivalves. Growth of H. circularisquama was obviously inhibited at 590 nm and a photon flux density less than 75 μmol quanta/m2/s. However, growth of S. costatum was not suppressed by irradiance from any LEDs tested from near-ultraviolet to near-infrared wavelengths at 75 μmol quanta/m2/s. The growth rate of H. circularisquama in an experimental treatment group with irradiance provided by both cool-white fluorescent lamps (12∶12 h L:D cycle) and a 590-nm LED (continuous irradiance) was 0.43/day. In the control group with irradiance provided only by cool-white fluorescent lamps (12∶12 h L:D cycle), the growth rate was 0.63/day, indicating that growth of H. circularisquama was suppressed by 590 nm (less than 75 μmol quanta/m2/s) irradiance from the LED and the continuous irradiance. The use of 590-nm LEDs in bivalve culture at irradiance levels less than 75 μmol quanta/m2/s might encourage the growth of the useful diatom S. costatum without stimulating growth of the harmful dinoflagellate H. circularisquama.

Key Words

Heterocapsa circularisquama irradiance light wavelengths light-emitting diode Skeletonema costatum 

Copyright information

© The Japanese Society of Fisheries Science 2008

Authors and Affiliations

  • Seok Jin Oh
    • 1
  • Dae -Il Kim
    • 2
  • Takao Sajima
    • 3
  • Yohei Shimasaki
    • 4
  • Yukihiko Matsuyama
    • 5
  • Yuji Oshima
    • 4
  • Tsuneo Honjo
    • 4
  • Han -Soeb Yang
    • 1
  1. 1.Korea Inter-University Institute of Ocean SciencePukyong National UniversityBusanKorea
  2. 2.Division of Maritime Environment ConservationIncheonKorea
  3. 3.Departments of Intelligent Machinery and SystemsKyushu UniversityFukuokaJapan
  4. 4.Laboratory of Marine Environmental Science, Bioscience and BiotechnologyKyushu UniversityFukuokaJapan
  5. 5.National Research Institute of Fisheries and Environment of Inland SeaFisheries Research AgencyHatsukaichi, HiroshimaJapan

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