Zoospores of Undaria pinnatifida:their efficiency to attach under different water velocities and conjugation behavior during attachment

查看全文 作　　者：PANG [1]Shaojun;SHAN [1,2]Tifeng

机构地区：[1]Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;[2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Acta Oceanologica Sinica》索引2008年第27卷第6期,共8页

基　　金：The'863'Hi-Tech Research and Development Program of China under contract No. 2006AA10A412 ;a project from the Chinese Academy of Sciences under contract No.KSCX2-YW-N-47-07 摘　　要：In the invading course of Undaria pinnatifida, zoospore attachment in a dynamically changed subtidal water environment is crucial for the establishment of a potential population in alien waters. Among many abiotic factors that may interfere with the attachment process, water velocity is the most important one. In this investigation, the effect of water velocity on zoospore attachment of U. pinnatifida was investigated in an artificially designed system. It was found that freshly released zoospores that were transported by water flowing at 0~16 cm/s showed no difficulty in attaching the smooth surface. Zoospore attachment decreased at elevated water flowing rates. At 70 cm/s no spore attachment occurred. Spores that have settled on glass slide for up to 1 h could not be stripped away by flowing water at a rate of 129 cm/s, the same was true of the 20 d old filamentous gametophytes. It was found that more than 70% of free-swimming zoospores tended to settle down adjacent to the settled spores and formed conjugated clusters from two up to a few hundred cells in still culture. 关键词：用水效率水流速度裙带菜共轭游动孢子表面附着实习行为

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Zoospores of Undaria pinnatifida:their efficiency to attach under different water velocities and conjugation behavior during attachment

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