Indexing and Abstracting of Scientific Reports and Papers in ASFA Database
Average rating
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Date
2016
Metadata
Show full item recordAbstract
Harmful algal blooms resulting in red discoloration of coastal waters in the Persian Gulf, Iran were first observed in January 2007. The species responsible for the bloom, which was identified as <i>Cochlodinium polykrikoides</i>, coincided with massive aquatic organisms’ mortalities in the Persian Gulf. In order to provide optimum growth and bloom forming, <i>C. polykrikoides</i> cells were sampled during the bloom conditions in the coastal waters of Persian Gulf. After adaptation in filtered seawater, they isolated by positive phototropism characteristic of this species to light. They were grown in modified media culture at different salinity (30, 32 and 35ppt), temperature (20, 23, 26 and 28~’C) and intensity (35, 70 and 90 ~kmol m<super>-2</super>s<super>- 1</super>). The results of the present study clearly showed that the highest alga biomass and growth rate was obtained following culture under the 32ppt salinity, 26~’C temperature, and under a 12h light:12h dark photoperiod regime at a light intensity of 90~kmol m<super>-2</super>s<super>-1</super>provided by cool white fluorescent tubes. Maximum cell density and growth rate of <i>C. polykrikoides</i> in a 60 liter tank for 20 days reached to 32×10<super>6</super> cell L<super>−1</super> and 0.28 day<super>−1</super>, respectively. However, the mean obtained cell density of <i>C. polykrikoides</i> in temperature regimes 20, 23, 26 and 28~’C (under salinity of 32ppt, and 90~kmol m<super>-2</super>s<super>-1</super>irradiance) were 2730, 9360, 28240 and 18080 cell ml<super>−1</super>, respectively. A two-way ANOVA indicated significant effects of temperature on the growth rate of <i>C. polykrikoides</i> followed by salinity, and then the interaction between temperature and salinityPages
40pp.Publisher or University
Iranian Fisheries Science Research InstituteSeries : Nr
49850;Collections