文献类型：期刊文献

英文题名：Reproductive strategy of the floating alga Ulva prolifera in blooms in the Yellow Sea based on a combination of zoid and chromosome analysis

作者：Zhao, Xiaohui[1];Cui, Jianjun[1,2,3];Zhang, Jianheng[1,4];Shi, Jinting[1,2];Kang, Xinyu[1];Liu, Jinlin[1];Wen, Qinlin[1];He, Peimin[1,4]

机构：[1]Shanghai Ocean Univ, Coll Marine Ecol & Environm, Shanghai 201306, Peoples R China;[2]Kochi Univ, Grad Sch Kuroshio Sci, 200 Otsu, Nankoku, Kochi 7838502, Japan;[3]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524008, Guangdong, Peoples R China;[4]Coinnovat Ctr Jiangsu Marine Bioind Technol, Dept Marine Sci, Lianyungang 222005, Jiangsu, Peoples R China

年份：2019

卷号：146

起止页码：584

外文期刊名：MARINE POLLUTION BULLETIN

收录：SCI-EXPANDED(收录号：WOS:000488999000067)、、EI(收录号：20192907184736)、Scopus(收录号：2-s2.0-85068774453)、WOS

基金：The authors thank the crews working on the Songhang for collecting the floating Ulva samples. We also express sincere thanks to the editor and reviewer for their valuable comments on the article. This study was sponsored by the National Key Research and Development Program of China (2018YFD0901500), Shanghai Sailing Program (17YF1407900), National Natural Science Foundation of China (Grant No. 41576163) and the Ocean Public Welfare Scientific Research Project, China (201205010).

语种：英文

外文关键词：Ulva prolifera; Chromosome; Life history; Macroalgal blooms; Yellow Sea

外文摘要：Green algal blooms have occurred in the Yellow Sea for 13 consecutive years since 2007. However, little is known about the reproductive strategy of the dominant species Ulva prolifera in the field. In particular, it is not clear whether the floating Ulva species are sporophytes or gametophytes, and if their life history is sexual or asexual. In this study, the life history type was determined based on the size, phototactic response, and flagella number for the zoids in at least two successive generations. In addition, chromosome observations were conducted to distinguish the gametophytes and sporophytes in the floating Ulva species. The results showed that the floating Ulva species were all sporophytes with sexual reproductive patterns, thereby indicating that this Ulva species always maintains vegetative growth from April to June during the early stage of the blooms. In addition, we found that the chromosome numbers were 18 for the diploid sporophytes and nine for the haploid male and female gametophytes. These results provide useful information to help understand the explosive growth of these green algal blooms.