Paleobiological study of the litteral ostracod from East Asia

东亚垃圾介形类的古生物学研究

• 批准号: 11691182
• 负责人: IKEYA Noriyuki
• 金额: $ 6.27万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11691182/
• 关键词: East Asia; ostracodes; Paleobiology; biogeography; marine ecology; speciation; coastal marine environment; species diversity; 東南アジア; 中国沿岸

It is known that the littoral ostracode fauna of Japan has considerable number of elements in common with those of the west Pacific. This suggests that the faunas may have common ancestors from the Tethyan Sea in the geological past. The aim of this project is especially to understand in detail how the littoral ostracode fauna along the coast of east China continent are related phylogenetically.As it takes much time to accumulate microfaunal data, this report is based on the limited data obtained so far.Fieldwork carried out for 100 days between 3 years, samples including ostracode specimens were collected from sea grass and algae on-the rocky shore and sea bottom at about 260 localities (approximately 300 sediment materials) along the entire coast of the east China continent. Sediment samples were washed through nested sieves, and ostracode specimens were picked out from dry sediment under a binocular microscope. Classification of these ostracode species is still progressing.Ostracode assemblages from coastal zones in the north China were quantitatively analyzed to examine the relationship between environmental factors and species distribution, 83 ostracode species belonging to 42 genera from the Shandong Peninsula and 27species belonging to 17 genera from the Liaodong Peninsula were identified. On the base on Q-mode cluster analysis 5 biofacies were recognized.

众所周知，日本的滨海介形虫动物群与西太平洋的介形虫动物群有相当多的共同点。这表明这些动物群在地质历史上可能有来自特提斯海的共同祖先。本项目的目的是为了详细了解中国大陆东部沿海介形虫动物群的系统发育关系。由于微型动物群数据的积累需要很长时间，因此本报告基于迄今获得的有限数据。历时3年，历时100天的野外工作，在中国大陆东部整个海岸约260个地点(约300份沉积物材料)的岩石海岸和海底采集了包括介形虫标本在内的海草和藻类标本。沉积物样品通过嵌套筛子洗涤，介形虫样品在双目显微镜下从干燥的沉积物中挑选出来。对中国北部海岸带的介形虫群落进行了定量分析，研究了环境因素与介形虫种类分布的关系，共鉴定出山东半岛介形虫83种，辽东半岛介形虫17属27种。在Q型聚类分析的基础上，识别出5种生物相。

项目成果

Yasuhara, M.: "Recent Ostracoda from the northeastern part of Osaka Bay, southwestern Japan"Jour. Geosci., Osaka City Univ.. 44. 57-95 (2001)

Yasuhara, M.：“来自日本西南部大阪湾东北部的最新介形类”Jour。

Irizuki, T.: "Miocene temperate Ostracoda from the Tochigi and Fukushima districts, central to northeastern Japan"IS02001,Field Excursion Guidebook. 45-72 (2001)

Irizuki, T.：“日本中部至东北部栃木县和福岛地区的中新世温带介形类”IS02001，实地考察指南。

Irizuki, T.: "Taphonomy of fossil ostiracode assemblages in Holocene on the Miura Peninsula, central Japan"The Memoirs. Geol. Soc., Japan. 54. 99-116 (1999)

入月 T.：“日本中部三浦半岛全新世化石 ostiracode 组合的埋藏学”回忆录。

Ikeya, N.: "The life history and culturing of Xestolberis harzaii (Crustacea, Ostracoda)"Hydrobiologia. 419. 149-159 (2000)

Ikeya, N.：“Xestolberis harzaii（甲壳纲、介形纲）的生活史和培养”水生生物学。

Irizuki, T.: "Miocene temperate Ostracoda from the Tochigi and Fukushima districts ,central to northeastern Japan"ISO2001, Field Excursion Guidebook. 45-72 (2001)

Irizuki, T.：“日本中部至东北部栃木县和福岛地区的中新世温带介形类”ISO2001，实地考察指南。