海洋生物学

海洋红藻岩生多管藻绒毛变种Polysiphonia scopulorum var. villum形态学研究

  • 丁兰平 ,
  • 钟丽敏 ,
  • 谭华强 ,
  • 黄冰心
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  • 汕头大学海洋生物研究所, 广东 汕头 515063
丁兰平(1969~), 男, 湖北省蕲春县人, 研究员、教授, 从事大型海藻学研究。E-mail: 977106218@qq.com

收稿日期: 2014-04-06

  修回日期: 2014-06-07

  网络出版日期: 2015-02-10

基金资助

国家自然科学基金面上项目(31270257)和重大项目(31093440)、广东省科技计划项目(2011B031100010、2012A020200007)、广东省高等学校人才引进项目、汕头市科技计划项目(2011-162、2012-171)资助

A morphological study on marine red algal Polysiphonia scopulorum var. villum

  • DING Lan-ping ,
  • ZHONG Li-min ,
  • TAN Hua-qiang ,
  • HUANG Bing-xin
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  • Marine Biology Institute, Shantou University, Shantou 515063, China

Received date: 2014-04-06

  Revised date: 2014-06-07

  Online published: 2015-02-10

摘要

2013年11月~2014年2月间, 在广东汕头南澳岛的野外调查过程中采集到一种丝状红藻, 经鉴定为岩生多管藻绒毛变种Polysiphonia scopulorum var. villum(J. Agardh)Hollenberg, 其主要特征为: 1. 藻体大量密集丛生于岩石上, 呈绒毛垫状; 2. 藻体小, 由匍匐枝与直立枝构成, 直立枝高度不超过1cm; 3. 直立枝分枝少或不分枝, 枝端顶细胞钝圆; 4. 假根由围轴细胞中部向外突出产生, 不被侧壁切割; 5. 毛丝体少量且较短, 1~3叉, 脱落后留下的痕细胞明显; 6. 囊果长卵形,有喙; 7. 精子囊枝由毛丝体原发育形成, 螺旋排列于枝端, 圆柱状, 无不孕顶细胞; 8. 四分孢子囊4-6-(10)个微螺旋状直长列, 球形, 其孢子囊盖细胞为2个。该种在南中国海为首次记录。为了精细观察藻体的内部结构, 摸索出了一套“染色-压片”方法, 以方便对此类属种的解剖学结构观察与分类研究。通过对该藻形态学及四分孢子囊的发育进行详细观察, 丰富了该物种的形态学知识, 扩展了其地理分布等信息。

本文引用格式

丁兰平 , 钟丽敏 , 谭华强 , 黄冰心 . 海洋红藻岩生多管藻绒毛变种Polysiphonia scopulorum var. villum形态学研究[J]. 热带海洋学报, 2015 , 34(1) : 42 -48 . DOI: 10.11978/j.issn.1009-5470.2015.01.006

Abstract

Samples of Polysiphonia scopulorum var. villum (J. Agardh) Hollenberg have been collected from Nan’ao Island, Shantou, Guangdong province during the field survey of November 2013~February 2014, and identified. We found the following combination of the characters: 1. the plants grown densely in tufts on rocks with villous mat shape; 2. the thalli composed with prostrate and erect branches in which the erect branches were less than 1 cm high; 3. the erect branches, sparsely branching out or not, with blunt apical cells; 4)the rhizoids stretching outward from the middle part of the pericentral cells with open connection; 5. the trichoblasts being sparse and short with 1~3 dichotomies, deciduous, often leaving conspicuous scar-cells; 6. mature cystocarps being ovate with a protruding ostiole; 7. the spermatangial branches arising from the entire trichoblast primordium, being arranged in a spiral manner at the tip of the branches, cylindrical without a celled sterile tip; and 8. the tetrasporangia occurring in slightly spiral series of up to 4-6-(10) successively, maturing sporangia spherical with two cover cells in a distal portion of the indeterminate lateral branches. This is the first time the species was recorded at the coast of the South China Sea. In order to observe the intimate internal structure of these filamentous thalli, a set of “dye-press” method to experimental materials was operated originally to be beneficial to the taxonomical research of those similar genera. The morphology and the tetrasporangial development of the species were observed in detail in this study. The results should enrich our knowledge of the morphology and geographical distribution of the species.

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