Study on the Origin of Deep-sea Hydrothermal Vent Communities at the Lau Back-Arc Basin, Southwest Pacific

西南太平洋劳弧后盆地深海热液喷口群落起源研究

基本信息

批准号：
15403014
负责人：
YAMAGUCHI Toshiyuki
金额：
$ 9.86万
依托单位：
Chiba University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

This is report on the morphological, ecological, biogeographic and molecular biological studies for vent communities collected at our expedition to the deep-sea hydrothermal vents at the Lau and Havre Back-arc Basins, Southwest Pacific from September 23 to November 10,2004 using Japanese submersible "Shinkai 6500" and her mother ship "Yokosuka." The main target of this research project is to clarify origin and evolution of the deep-sea hydrothermal vent and cold seep communities of the Southwest Pacific.The Lau and Havre Back-arc Basins, Southwest Pacific hold communities of high biological diversity in comparison with other such vent and seep communities in the world based on our research of principal component in the deep-sea hydrothermal vent and seep communities such as bivalves, gastropods, crustaceans (including crabs, shrimps and barnacles), worms, tube-worms, etc. Particularly, barnacles in crustacean shown the highest diversity in the known deep-sea vent and seep of the world. … More We could found all four suborders, Scalpellomorpha, Brachylepadomorpha, Verrucomorpha, and Balanomorpha from the Lau Basin. And the peripheral areas of the Lau Basin such as North Fiji and Manus Basins show the second high biological diversity hold three suborders except Brachylepadomorpha.The morphological examination of barnacles collected from the Lau and Havre basins shows that scalpellomrphan barnacle Ashikailepas has the most primitive morphological characteristics and also the widest distribution at the West Pacific.The molecular biology of some principal vent animals collected from the Lau and Havre basins shown primitive phylogenetic position in comparison with the group of the East Pacific, West Pacific (Northwest to Southwest) and Indian Oceans. Ashinkailepas in comparison with two Japanese and one Havre populations population shows the most primitive Scalpellomorph in the molecular phylogeny. Therefore, the origin of the known vent and seep communities seems to be Southwest Pacific. Less

这是关于在我们探险到西南太平洋的Lau和Havre Back-Arc Arc盆地的探险中收集的通风中收集的通风群体的形态，生态，生物地理学和分子生物学研究的报告该研究项目的主要目标是阐明西南太平洋深海水热和冷种子群落的起源和进化。与我们在世界上的其他水平和种子的研究中，西南太平洋持有高生物学多样性的西南太平洋持有高生物学多样性的社区相比甲壳类动物（包括螃蟹，虾和藤壶），蠕虫，管子等。尤其是甲壳类动物的藤壶在已知的深海发泄中显示出最高的多样性，并且是世界上看到的。 ...更多我们可以从Lau Basin中找到所有四个下属，即Swerpellomorpha，Brachyleepadomorpha，Verrucomorpha和Balanomorpha。劳盆北部和曼努斯盆地等劳斯盆地的外围区域表明，第二个高生物学多样性保留了三个下属，除了胸骨骨膜外，从Lau和Havre basses收集的藤壶的形态学检查表明，牛皮basses的形态最为旋律，这表明了摩尔氏菌的特征。与东太平洋，西太平洋（西北至西南部）和印度洋相比，从LAU和Havre Basses收集的一些主要的通风动物中，显示出原始的系统发育位置。与两个日本人和一个大群人群相比，Ashinkailepas在分子系统发育中显示出最原始的眼皮杆菌。因此，已知的通风口和看到社区的起源似乎是西南太平洋。较少的