Seaweed exploitation in Chile has increased over the last decades, resulting in a reduction of seaweeds landings and the overharvesting of natural beds. In response, ecological baselines for their sustainable exploitation and the development of seaweed aquaculture have been implemented. In recent years, the culture of commercial red seaweed Chondracanthus chamissoi has been developed experimentally by spore and vegetative reproduction. These methods are facilitated by the formation of secondary attachment discs (SADs), generated to fasten the inoculated algae to substrates. In this study, the vegetative propagation was carried over an artificial substrate installed in a sea bottom culture system. The biomass yields, total amount of epiphytes, length of new thalli and number of SADs, per season and culture times (1, 2, 3 and 4 months) are reviewed in this work. Chondracanthus chamissoi showed growth under all treatments, with a maximum accumulated biomass of 60 g m⁻¹, recorded in summer, and with no significant differences in biomass yield reported in autumn and spring seasons. A similar pattern was observed for epiphyte biomass, while the greatest SAD number and thalli lengths were recorded in winter.

中文翻译：

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在通古伊湾（智利北部）的波多黎各阿尔迪地区通过营养繁殖进行的长角软骨鱼（Rhodophyta：Gigartinales）海底养殖

在过去的几十年中，智利对海藻的开发有所增加，导致海藻着陆减少和自然床的过度收获。作为回应，已经为它们的可持续开发和海藻水产养殖的发展制定了生态基准。近年来，商品红海藻Chondracanthus chamissoi的养殖已经通过孢子和营养繁殖实验性地发展了。通过形成辅助附着盘（SAD）来促进这些方法，该辅助附着盘用于将接种的藻类固定在基质上。在这项研究中，营养繁殖是通过安装在海底养殖系统中的人工基质进行的。在这项工作中，对每个季节和培养时间（1、2、3和4个月）的生物量产量，附生植物的总量，新的​​拟南芥的长度和SAD的数量进行了回顾。软骨藻在所有处理下均显示出生长，最大累积生物量为60 g m ^-1，记录在夏天，在秋季和春季报告的生物量产量无显着差异。对于附生生物量，观察到了相似的模式，而冬季记录到最大的SAD数量和沙丘长度。