Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
Search
Advanced search
OR
Browse
Search
Volume 52, Issue 4
Displaying 1-6 of 6 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Physiology and Ecology of the Red Tide Organisms
    Sadaaki YOSHIMATSU
    1998 Volume 52 Issue 4 Pages 195-201
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.195
    JOURNAL FREE ACCESS
    Download PDF (4930K)
  • Past and Present Approaches to Environmental Management in Aquaculture
    Shigeru MONTANI
    1998 Volume 52 Issue 4 Pages 202-210
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.202
    JOURNAL FREE ACCESS
    Download PDF (6509K)
  • Prediction Techniques of Harmful Red Tides Associated with Fish Kills
    Tsuneo HONJO
    1998 Volume 52 Issue 4 Pages 211-215
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.211
    JOURNAL FREE ACCESS
    Download PDF (3243K)
  • Biological Control of Red Tides
    Ichiro IMAI
    1998 Volume 52 Issue 4 Pages 216-227
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.216
    JOURNAL FREE ACCESS
    Download PDF (8464K)
  • Outbreaks of the Noxious Red Tide Dinoflagellate Gymnodinium mikimotoi in the South Harima Nada Sea Area, Seto Inland Sea, Japan, in 1995 and 1996
    Tadashi OCHI, Sadaaki YOSHIMATSU, Satoshi MATSUOKA, Kenji AZUMA, Takas ...
    1998 Volume 52 Issue 4 Pages 228-235
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.228
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Monitoring of the formation and breakdown of the thermocline, the variation in nutrient concentration, and the bloom of dinoflagellate was carried out in the south Harima Nada sea area at the Seto Inland Sea in the summers of 1995 and 96. The concentrations of nutrients were controlled by the formation and the breakdown of the thermocline in the bottom layer, and occasionally by the direct influence of typhoons. The vegetative cells of the diatoms decreased and the resting cells formed under conditions of continuous insufficient daylight and nutrition in the euphotic layer.
    After the diatoms, such as Skeletonema costatum or Chaetoceros spp., had decayed, nutrients were supplied to the euphotic layer from the bottom layer due to the breakdown of the thermocline, then the noxious dinoflagellate Gymnodinium mikimotoi rapidly increased. The noxious red tide caused mass mortalities of cultured red sea bream and purplish amberjak in 1995 and 1996.
    The suggests that the information on the breakdown of the thermocline in the bottom layer, the detection of resting cells of diatoms, and weather information can all contribute to short term forecasts of the outbreak of noxious dinoflagellate red tide.
    View full abstract
    Download PDF (6127K)
  • Role of UV-A Absorbing Substances in Red Tides Organisms
    Tomotoshi OKAICHI, Makoto YAMAZAKI, Sachio NISHIO, Tadashi OCHI, Kunin ...
    1998 Volume 52 Issue 4 Pages 236-242
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.236
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The presence of UV-A (320-360 nm) absorbing substances, aminomycosporines, in red tide organisms, Noctiluca scintillans Chattonella antiqua, Alexandrium catenella, and others were examined. The occurrence of red tides of these spscies seems partly due to the protection of photosynthesis from strong irradiation of UV-A by aminomycosporines and related compounds.
    The UV-A protective capability of aminomycosporines extracted from N. scintillans was tested using a double test tube system, with a quartz test tube of inner diameter of about 3 cm on the outside and a culture test tube inside (Fig. 4). Aminomycosporines solution extracted from Noctiluca scintillans was put in the outer quartz tube. C. antiqua as red tide species and Skeletonema costatum, which dose not show any aborption in the UV-A region, were incubated in the inner test tube with NaH14CO3 in culture media. The UV lamp used was a Toshiba FL20SE (emission max, 313 nm) with UV ray strength of 1760 J. m-2d-1.
    UV Irradiation of S. costatum in distilled water in the outer tube 14C incorporations were retarded to about 22-40% of the control, which was illuminated by fluorecent lamp. Under the same condition, 14C incorporation of C. antiqua was reserved at 76-83%. When the aminomycosporines solution with about 10 times the concentration of N. scitillans content was put in the outer tube, 14C incorporation of S. costatum recovered to about 70-93% of the control. The 14C incorporation of C. antiqua had slightly retaken it.
    The role of UV-A absorbing aminomycosprines in red tide organisms seems to be to protect photosynthetic systems from strong day light and appears to be associated with the occurrence of red tides.
    View full abstract
    Download PDF (4825K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top