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As a large conspicuous intertidal brown alga, individuals of Sargassum horneri can reach a length of more than 7 m with a fresh weight of 3 kg along the coasts of the Eastern China Sea. The biomass of this alga as a vital component in coastal water ecology has been well documented. In recent years, a steady disappearance of the algal biomass along the once densely populated coastal areas of the Eastern China Sea has drawn attention in China. Efforts have been made to reconstruct the subtidal algal flora or even to grow the alga by use of long-lines. As part of the efforts to establish an efficient technique for producing seedlings of S. horneri, in this investigation a series of culture experiments were carried out in indoor raceway and rectangular tanks under reduced solar irradiance at ambient temperature in 2007–2008. The investigation demonstrated that: (1) sexual reproduction of S.horneri could be accelerated in elevated temperature and light climates, at least 3 months earlier than in the wild; (2)eggs of S. horneri had the potential to be fertilized up to 48h, much longer than that of known related species; (3)suspension and fixed culture methods were both effective in growing the seedlings to the long-line cultivation stage; and (4) the life cycle of S. horneri in culture could be shortened to 4.5 months, thus establishing this alga as an appropriate model for investigating sexual reproduction in dieocious species of this genus.

作为一种潮间带常见的大型褐藻，铜藻个体在中国东海海岸可达到7m长，3kg重（湿重）。铜藻的生物量作为沿海水生态重要组件，已经被很好的记录。近年来，沿东海人口稠密地区海岸的大型海藻生物量持续减少，这引起了中国的关注。中国已经在努力重建潮下带海藻群系，甚至通过使用苗绳种植海藻。本研究作为建立铜藻幼苗高效繁殖技术的一部分，2007-2008年，在自然环境温度条件下，减少太阳辐射，借助室内水塘和矩形培养箱进行了一系列培养实验。研究表明：（1）在高温和光照气候下, 铜藻的有性生殖速度可以加快, 至少比野外早3个月；（2）铜藻的受精过程可能长达48小时，这比其他已知的相关物种都长；（3）悬浮和固定培养方法都能有效地将幼苗培育到苗绳栽培阶段;（4）铜藻的生活史在培养条件下会缩短了4.5个月，通过调查马尾藻属常见种铜藻的有的生殖，从而建立该类大型海藻的适当模型。

参考文献：Cultivation of the brown alga Sargassum horneri:sexual reproduction and seedling production in tank culture under reduced solar irradiance in ambient temperature