Study on the dominant species of Pteropoda in East China Sea

1 INTRODUCTION Pteropoda is a group of marine pelagic mol- lusks, which belongs to Opisthobranchia of Gastro- poda. Although Pteropoda is not a major group in pelagic zooplankton in terms of abundance and number of species, their ecological characters are…     

Euthecosomatous gastropods (Mollusca: Heterobranchia) from Buton (SE Sulawesi,Indonesia), with notes on species from Viti Levu,Fiji; systematics,biostratigraphy

Geologie en Mijnbouw - Pteropoda (Mollusca, Gastropoda, Euthecosomata) described by Beets (1943, 1950, 1953) from the alleged Late Miocene/Early Pliocene asphaltic deposits of Buton (SE Sulawesi,...     

东海浮游翼足类(Pteropoda)环境适应类型的划分

根据1997-2000年东海23°30'-33°N、118°30'-128°E海域4个季节海洋调查资料,采用浮游翼足类物种丰度和同步温、盐度数据,构造相关数学模型,计算其最适温度和最适盐度.同时参考生态特征分析,划分东海浮游翼足类物种生态类型.结果表明,东海浮游翼足类鉴定到种的共有20种.在翼足类优势种中,尖笔帽螺(Creseis acicula)和马蹄螔螺(Limacina trochiformis)是具有广温广盐特征的亚热带外海种;拟海若螺(Paraclione longicaudata)、球电螺(Cavolinia globulosa)和胖螔螺(Limacina inflata)是热带大洋种;强卷螺(Agadina syimpsoni)、厚唇螺(Diacria trispinosa)、龟螺(Cavolinia tridentata)和角长吻龟螺(C.longirostris var.angulata)是适温较低的亚热带外海种;其余都是典型的亚热带外海种.东海浮游翼足类总体上显示出典型的暖水性生态类型.拟海若螺和胖螔螺具有较小的盐度分布区间,是台湾暖流或黑潮暖流向北扩展的指示种.现代东海浮游翼足类优势种的地理分布,与古代东海底质沉积物分析结论相一致.浮游翼足类种类生态类型的划分在古海洋气象、海洋地质、海洋物理和海洋生物等学科研究中具有重要的意义.