中文摘要：

根据1997—2000年东海23°30′N—33°N、118°30′E—128°E海域4个季节海洋调查资料，采用物种丰度和同步表层温度、盐度数据的曲线拟合，构造数学模型，结合地理分布分析，研究了栉水母分布最适温度和最适盐度，分析了栉水母的生态类型。结果表明：瓜水母（Beroe cucumis）的丰度和温度，掌状风球水母（Hormiphora palmata）和卵型瓜水母（B．ovata）的丰度和盐度的相关性不显著；蝶水母（Ocyropsis crystallina）、球型侧腕水母（Pleurobrachia globosa）、瓜水母，掌状风球水母和卵型瓜水母的丰度与其对应的温度或盐度均符合Yield—Density模型；瓜水母最适温度和卵型瓜水母最适盐度依据散点图估计，掌状风球水母最适盐度不明显，其他物种最适温、盐度均由Yield—Density模型极值点计算；东海栉水母所有物种均系亚热带外海种，其中球型侧腕水母、瓜水母和掌状风球水母具有较宽的温、盐度分布区间，卵型瓜水母和蝶水母是冬、春季暖流水团的指示种。

英文摘要：

Based on the 4 seasonal surveys in the area （23°30′N-33°00′N, 118°30′E-128°00′ E） of East China Sea from 1997 to 2000, the distribution patterns and abundance of Ctenophores in this sea area and their relations to water temperature and salinity were examined. The water temperature and salinity optimal for the distribution of Ctenophores were predicted with Yield- Density model, and the ecotypes of Ctenophores were determined by the predicted parameters and the geographical distribution of Ctenophores. The results showed that except for the relationships between Beroe cucumis abundance and surface sea temperature （SST） , and between Hormiphora palmata or B. ovata abundance and surface sea salinity （ SSS）, the relationships between other species （involving Ocyropsis crystalline and Pleurobrachia globosa） abundance and SST or SSS were fitted the Yield-Density models. Based on these models, the optimal water temperature and salinity were calculated. The optimal water temperature for B. cucumis and the optimal water salinity for B. ovata were estimated by scatter plots, while the optimal water salinity for H. palnata was not clearly showed. It was indicated that all Ctenophores in East China Sea were offshore subtropical water species, among which, P. globosa, B. cucumis and H. palmata had wide tolerance to different water temperature and salinity, not suitable as a good indicator of water mass, while B. ovata and O. crystalline were sensitive to environmental changes, being the good indicator species of warm water mass in winter and spring.