Vulcanodinium rugosum, a dinoflagellate developing in Ingril Lagoon (Mediterranean, France) is responsible for shellfish intoxications due to the neurotoxin pinnatoxin G. A one year survey (March 2012–April 2013) was conducted in this oligotrophic shallow lagoon and key environmental parameters were recorded (temperature, salinity and nutrients). The spatio-temporal distribution of V. rugosum in water column and on macrophytes was also determined. Planktonic cells of V. rugosum were observed at all sampling stations, but in relatively low concentrations (maximum of 1000 cell/L). The highest abundances were observed from June to September 2012. There was a positive correlation between cell densities and both temperature and salinity. Non-motile cells were detected on macrophytes, with a maximum concentration of 6300 cells/g wet weight. Nitrite and ammonium were negatively related to V. rugosum abundance whereas total nitrogen, total phosphorus and phosphates showed a positive correlation. Altogether, in situ results suggest that V. rugosum is rather thermophilic and that organic nutrients should be considered when studying the nutrition requirements for this noxious expanding dinoflagellate.

Vulcanodinium rugosum，在Ingril泻湖（法国，地中海）发展而来的鞭毛藻，是神经毒素Pinnatoxin G导致贝类中毒的原因。在该营养贫化的浅泻湖中进行了为期一年的调查（2012年3月至2013年4月），并记录了关键的环境参数（温度，盐度和营养素）。还确定了V. rugosum在水柱和大型植物上的时空分布。皱纹浮游杆菌的浮游细胞在所有采样站都可以观察到，但是浓度相对较低（最大为1000细胞/升）。从2012年6月至2012年9月观察到最高的丰度。细胞密度与温度和盐度之间呈正相关。在大型植物上检测到非运动细胞，最大浓度为6300个细胞/ g湿重。亚硝酸盐和铵盐与V. rugosum的含量呈负相关，而总氮，总磷和磷酸盐呈正相关。总而言之，原位结果表明，V。rugosum具有较高的嗜热性，在研究这种有毒的扩张鞭毛鞭毛藻的营养需求时，应考虑有机营养素。