Life history strategies of modern and fossil molluscs.

现代软体动物和化石软体动物的生活史策略。

• 批准号: 63540622
• 负责人: TANABE Kazushige
• 金额: $ 1.22万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63540622/
• 关键词: Mollusca; Bivalvia; Cephalopoda; Development; Life history; Absolute growth; Functional Morphology; Evolution; アンモナイト類; 原殻; 胚殻; 成長線; 年輪; 内助; 初期生活史; 胚発生モデル; 成長率; SEM

Aspects on life history strategies in modern and fossil molluscs were considered in this project, with special reference to the early development, absolute shell growth and functional morpholog in the Bivalvia and the Cephalopoda. The results of this study are summarized as below.(1) Developmental types and juvenile mortality rates were estimated for several species of Limopsis, Glycymeris and Venericardia (Bivalvia), on the basis of prodissoconch morphology and morpnometry of well-preserved juvenile shells from the Plio-pleistocene deposits in the Pacific regions of southwest Japan. (by Tanabe)(2) Absolute shell growth patterns and aging in selected Recent bivalves from the Japanese coast were analyzed, relying on the annual increments recognized in the internal shell sections of marked and recovered individuals. (by Tanabe)(3) Endocochliate embryo model was proposed for the Mesozoic Ammonitida (Cephalopoda) on the basis of comparative microstructural observations of juvenile shells of the Cretaceous ammonites and modern cephalopods (Nautilus, Sepia and Spirula). (by Tanabe)(4) Functional meanings of the internal ribs and hydrodynamic properties for the shells of some modern and fossil pectinids (Bivalvia) were considered by means of scanning electron microscopy and hydrodynamic experiments respectively. (by Hayami)(5) Biogeographic distribution and growth rate of stalk of the crinoid Isocrinus from the western Pacific were examined, as a basis for understanding the biota in the deep-sea environments. (by 0ji)

本项目考虑了现代和化石软体动物的生活史策略方面，特别参考了双壳类和头足类的早期发育、绝对壳生长和功能形态学。本研究结果总结如下。(1)根据日本西南部太平洋地区上新世-更新世沉积物中保存完好的幼贝的原贝形态和形态测量学，估计了几种Limopsis，Glycymeris和Veneropidia（Bivalvia）的发育类型和幼贝死亡率。(by田边）（2）根据标记个体和恢复个体内壳切片的年生长量，分析了日本沿海部分近代双壳类的绝对壳生长模式和年龄。(by田边）（3）通过对白垩纪菊石类和现代头足类（鹦鹉螺、乌贼和旋螺）幼壳的显微结构观察，提出了中生代菊石类（头足类）的内壳胚模式。(by田边）（4）通过扫描电镜和水动力学实验，探讨了一些现代和化石栉壳类（双壳类）壳体内肋的功能意义和水动力学性质。(by（5）研究了西太平洋海百合等海百合的生物地理分布和茎的生长速率，为了解深海环境的生物区系提供了依据。(by 0ji）

项目成果

Tanabe,K.,Tsukahara,J.and Hayasaka,S.: "Comparative morphology of living Nautilus (Cephalopoda)from the Philippines,Fiji and Palau." Malacologia. 31. 303-318 (1990)

Tanabe, K.、Tsukahara, J. 和 Hayasaka, S.：“来自菲律宾、斐济和帕劳的活鹦鹉螺（头足类）的比较形态。”

Tanabe, K. and Oba, T.: "Latitudinal variation in shell growth patterns of Phacosoma japonicum (Bivalvia: Veneridae) from the Japanese coast." Marine Ecology, Progress Series, Vol. 47, p.75-82 (1988).

Tanabe, K. 和 Oba, T.：“日本海岸的 Phacosoma japonicum（双壳纲：Veneridae）贝壳生长模式的纬度变化。”

Dagys, A.S., Lehmann, U., Bandel, K., Tanabe, K. and Weitschat, W.: "The jaw apprati of ectocochleate cephalopods." Palaontologische Zeitschrift, Vol. 63, p.41-53 (1989).

Dagys, A.S.、Lehmann, U.、Bandel, K.、Tanabe, K. 和 Weitschat, W.：“外蜗壳头足类动物的下颌装置。”

Oji,T.: "Distribution of stalked crinoids from Japan and nearby waters." The University Museum,Uiversity of Tokyo,Nature and Culture. No.1. 27-43 (1989)

Oji,T.：“来自日本和附近水域的有柄海百合的分布。”

Oji, T.: "Growth rate of stalk of Metacrinus rotundus (Echinodermata: Crinoidea) and its functional significance." Journal of the Faculty of Science, University of Tokyo, Section II, Vol.22, p.39-51 (1989).

Oji, T.：“Metacrinus rotundus（棘皮动物：海百合总科）茎的生长速度及其功能意义。”