Allelopathic interactions between Prorocentrum micans and Skeletonema costatum or Karenia mikimotoi in laboratory cultures

• Published in: Chinese journal of oceanology and limnology Vol. 29; no. 4; pp. 840 - 848
• Main Author: 翼晓青 韩笑天 郑立 杨佰娟 俞志明 邹景忠
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 01.07.2011; Springer Nature B.V
• Subjects: Algae; Algal toxins; Allelopathy; Bacillariophyceae; Cultures; Diatoms; Dinoflagellates; Earth and Environmental Science; Earth Sciences; Growth; Karenia mikimotoi; Marine; Mathematical models; Oceanography; Prorocentrum micans; Skeletonema costatum; Species and Species-Specific Patterns and Responses; Toxins; 中肋骨条藻; 初始密度; 化感物质; 原甲藻; 实验室培养; 生理现象; 相互作用; 相生相克; enriched filtrate culture; allelopathy; bi-algal culture
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/s00343-011-0512-x

Algal allelopathy is an ecological/physiological phenomenon that has focused attention on the interactions among algae and the production of algal toxins. We investigated the allelopathic interactions between the dinoflagellate genus Prorocentrum micans and diatom genus Skeletonema costatum and between P. micans and dinoflagellate genus Karenia mikimotoi using bi-algal cultures. Because the effects were species-specific and size-dependent, we evaluated the effect of different initial densities. At low densities of P. mieans and high densities of S. costatum inoculated into the same medium, the growth of R rnieans was weakly restrained, whereas the growth of S. costatum was significantly suppressed. S. costatum and K. mikimotoi were strongly inhibited by P. micans, in both the bi-algal cultures and enriched filtrates. Direct cell-to-cell contact was not necessary to gain a competitive advantage, thus, our results suggest that P. micans inhibited the growth of S. costatum and K. mikimotoi by the release of allelochemical（s）. Last, a mathematical model was used to simulate growth and interactions between P. micans and S. eostatum and between P. micans and K. mikimotoi in bi-algal cultures.