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首页> 外文期刊>Journal of oceanography >Reproductive ecology of the dominant dinoflagellate, Ceratium fusus, in coastal area of Sagami Bay, Japan
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Reproductive ecology of the dominant dinoflagellate, Ceratium fusus, in coastal area of Sagami Bay, Japan

机译：日本相模湾沿海地区优势鞭毛藻（Ceratium fusus）的生殖生态

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摘要

The seasonal abundance of the dominant dinoflagellate, Ceratium fusus, was investigated from January 2000 to December 2003 in a coastal region of Sagami Bay, Japan. The growth of this species was also examined under laboratory conditions. In Sagami Bay, C. fusus increased significantly from April to September, and decreased from November to February, though it was found at all times through out the observation period. C. fusus increased markedly in September 2001 and August 2003 after heavy rainfalls that produced pycnoclines. Rapid growth was observed over a salinity range of 24 to 30, with the highest specific rate of 0.59 d?1 measured under the following conditions: salinity 27, temperature 24°C, photon irradiance 600 μmol m?2s?1. The growth rate of C. fusus increased with increasing irradiance from 58 to 216 μmol m?2s?1, plateauing between 216 and 796 μmol m?2s?1 under all temperature and salinity treatments (except at a temperature of 12°C). Both field and laboratory experiments indicated that C. fusus has the ability to grow under wide ranges of water temperatures (14–28°C), salinities (20–34), and photon irradiance (50–800 μmol m?2s?1); it is also able to grow at low nutrient concentrations. This physiological flexibility ensures that populations persist when bloom conditions come to an end.
机译：2000年1月至2003年12月，在日本相模湾的沿海地区调查了优势鞭毛藻（Ceratium fusus）的季节性丰度。还在实验室条件下检查了该物种的生长。在相模湾，尽管在整个观察期内一直发现，但梭状梭菌在4月至9月显着增加，而11月至2月则有所下降。在暴雨造成比诺克星后，梭形梭菌在2001年9月和2003年8月显着增加。在盐度为24至30的范围内观察到快速生长，在以下条件下测得的最高比值为0.59 d？1：盐度27，温度24°C，光子辐照度600μmolm？2s？1。纤毛梭菌的生长速率随着辐照度从58增加到216μmolm？2s？1而增加，在所有温度和盐度处理下（在12°C时除外）在216和796μmolm？2s？1之间稳定。现场和实验室实验均表明，梭状芽胞杆菌具有在宽广的水温（14–28°C），盐度（20–34）和光子辐照度（50–800μmolm？2s？1）下生长的能力。 ;它也能够在低营养浓度下生长。这种生理上的灵活性可确保开花条件结束时种群持续存在。

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