我国东海赤潮原甲藻应属哪种 ?

What the Prorocentrum species should be? -A review on identification of a Prorocentrum species from the East China Sea

阐述并讨论了中国东海长江口外经常发生的原甲藻赤潮原因种的种类认知问题 .论述了自从Stein提出具齿原甲藻 (ProrocendrumdentatumStein)新种后迄今中外专家报告该种的描述及分布 ,并对比了具齿原甲藻与长江口的原甲藻的异同 .研究证实我国东海的原甲藻与具齿原甲藻有较大的差别 ,主要表现在体积大小、藻体末端形态以及藻体前端突起的大小和形态等方面 .本文汇集了国内外对具齿原甲藻与我国原甲藻的研究成果 ,对比认为 ,我国长江口外经常发生赤潮的原甲藻为东海原甲藻 (ProrocendrumdonghaienseLu) .文中还讨论了由陆斗定发表的东海原甲藻需要补充修正的观点 .在过去的数年中 ,我国东海长江口海域频繁爆发大面积的原甲藻赤潮 ,但对于赤潮原因种原甲藻 (Prorocentrum)的定种问题存在两种不同的观点 ,一种观点认为本种是具齿原甲藻 ,另一种观点认为是东海原甲藻 .为了阐明此种原甲藻的命名问题 ,于 2 0 0 2年 11月在深圳召开了题为“我国东海赤潮原因种原甲藻分类学国际研讨会” .认为是P .dentatum的依据是长期以来国际上通常把类似我国东海的原甲藻定为P .dentatum ,其根据是它的前端有突起等 .而持不同观点的专家认为我国东海的这种原甲藻在细胞长度上与Stein描述的原P .den tatum差异很大 ,并且除少?

In the past decade, the Prorocentrum bloom was the most frequently occurred bloom in the East China Sea. It occurred every one year or two years, and covered huge areas. There were arguments on the identification of Prorocentrum bloom causative species. Some scientists thought the species being P. dentatum Stein, but the others thought that it was a new species, P. donghaiense Lu. For achieving the proper classification of the species, an 'International Workshop on HAB Causative Species-Taxonomic View on a species of Prorocentrum in the East China Sea' was held in Shenzhen, China in November, 2002. By reviewing as much as available references, and by comparing the Prorocentrum specimen from the East China Sea with those from Japan, Korea and USA, scientists participated in this Workshop agreed that: 1) the specimens from Japanese and Korean waters, and from CCMP, USA were the same species; 2) the features of anterior projection and cell surface marking were similar to those of originally described P. dentatum Stein; 3) the major difference is the cell size. The specimens from the East China Sea were mostly less than 20 μm long, whereas the size of the original described P. deatatum was larger than 50 μm; 4) the minor difference is the shape of the cell end. The original described P. deatatum was with a pointed end, whereas the cells from the East China Sea were mostly with a rounded end. There was no final agreement for the species identification at the Workshop. By summing all views of scientists from the Workshop, the authors suggested that the bloom causative species of Prorocentrum in the East China Sea, as well as so-called species of P. dentatum from other East Asian waters, should be the same species. They are all P. donghaiense Lu.