Artificial seed production and cultivation of the edible brown alga, Sargassum fulvellum (Turner) C. Agardh: Developing a new species for seaweed cultivation in Korea

Hwang, Eunkyoung; Park, Chan Sun; Baek, Jae Min

doi:10.1007/978-1-4020-5670-3_4

Cited by 14 publications

(22 citation statements)

References 5 publications

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“…Egg release has previously been shown to occur over the range 10-25°C (Hales and Fletcher 1989), although the latter study did not record the quantity or onward survival of germlings. A similar temperature optimum has been reported in other members of the Sargassaceae including 20-25°C in S. fulvellum (Hwang et al 2006) and 25°C in S. horneri (Choi et al 2008) and S. thunbergii (Zhao et al 2008;Chu et al 2012), whilst in S. vachellianum, 21°C was optimal during the first 20 days, rising to 24°C after 30 days (Yan and Zhang 2014). By comparison S. wightii, from the south coast of India where water temperatures range from 27 to 33°C, displayed optimal egg liberation at 30°C (Sukumaran and Kaliaperumal 2000).…”

Section: Discussionsupporting

confidence: 83%

“…An interactive effect was found between temperature and light, with germling production favoured at low temperatures with high light intensities (10-15°C, 100-150 μmol photons m −2 s −1 ) and high temperatures with low light intensities (25-30°C, 20-50 μmol photons m −2 s −1 ). This effect may have been missed in previous studies on S. muticum and related species that examined each factor independently (Hales and Fletcher 1989;Hwang et al 2006).…”

Section: Discussionmentioning

confidence: 98%

“…It forms extensive beds in the littoral regions which act as nutrient absorption beds, coastal protection and nursery and feeding areas for commercially important fish and invertebrates (Coston-Clements et al 1991;Tsukidate 1992;Hwang et al 2006). Sargassum muticum is native to Northeast Asia including Korea, where water temperature varies between 10 and 25°C, and Japan (Yendo 1907), where it is confined to the warm waters of the Kuroshio Current (20-28°C).…”

Section: Introductionmentioning

confidence: 99%

“…Because of this, research has been conducted into the development of cultivation technology for many commercially harvested species including Hizikia fusiforme (Pang et al 2005), Sargassum fulvellum (Hwang et al 2006), Sargassum horneri (Pang et al 2009), Sargassum naozhouense (Xie et al 2013), Sargassum thunbergii (Zhao et al 2008) and Sargassum vachellianum (Chai et al 2014). These all share a similar life history, allowing the same propagation techniques to be utilized (Xie et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Environmental factors on egg liberation and germling production of Sargassum muticum

Kerrison

2015

J Appl Phycol

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Sargassum muticum is a successful invasive Phaeophyte macroalga, which has colonized from Norway to the Mediterranean in Europe and from Alaska to the Bay of Mexico on the American Atlantic coast. It is also being evaluated as a commercial crop within its native range, SE Asia. Understanding its reproductive tolerance will improve our understanding of its invasive potential and allow optimal germling production for commercial cultivation. Egg liberation, fertilization and germling production were monitored in fertile branchlets collected from Great Cumbrae, Scotland, UK. These were incubated under a range of conditions as follows: photon flux densities (20-150 μmol photons m −2 s −1 ), salinity (0-70 psu), temperature (10-30°C) and desiccation in either the sun (5-60 min) or the shade (15-120 min). The optimum conditions to maximize germling production were found to be a 15-30 min desiccation period in the shade, followed by immersion into normal salinity seawater at 20°C and 50-100 μmol photons m −2 s −1 . This information could be useful for the development of a cultivation industry within its native range. An interactive effect was seen between temperature and light intensity with germling production favoured in high light and low temperature (10-15°C, 100-150 μmol photons m −2 s −1 ) and vice versa (25-30°C, 20-50 μmol photons m −2 s −1 ). Whilst its salinity and desiccation tolerance agree with previous investigations 40 years ago, the lower temperature optimum of 20°C (previously 25°C) may indicate selection for lower temperature reproduction within the UK population. This may accelerate its invasion northward into Scotland.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Environmental factors on egg liberation and germling production of Sargassum muticum

Kerrison

2015

J Appl Phycol

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“…Among them, Sargassum fulvellum (Turner) C. Agardh and Sargassum fusiforme (Harvey) Setchell are the most common species eaten by humans, being used in seaweed salad and soup (Sohn 1993). Hwang et al (2006a) suggested that S. fulvellum could be commercially cultured, and in 2012, production was a modest 1,354 t wet weight (Information officer 2012). Production of S. fusiforme was ten times higher, 13,024 t wet weight in 2012 (Information officer 2012), as S. fusiforme is more commonly used in traditional Korean dishes (Hwang et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Effect of pH and salinity on the removal of phytal animals during summer cultivation of Sargassum fusiforme and Sargassum fulvellum in Korea

et al. 2015

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The brown seaweeds, Sargassum fusiforme and Sargassum fulvellum are edible and highly valued in Korea. During the summer season, phytal animals graze heavily on young algal blades and holdfasts of these two species and substantially reduce harvestable biomass. Acid and salinity treatments are used to efficiently control infestations by phytal animals in other cultivated algae (e.g., Pyropia), but their effects on the removal of phytal animals in Sargassum cultivation are unknown. Here we investigated the effects of pH (range 2~13) and salinity (range 0~44 psu) on the removal of two major phytal animals, Caprella scaura and Gammaropsis utinomi, associated with S. fusiforme and S. fulvellum. We also examined the optimum quantum yield (F v /F m ) of algae in the same experimental conditions to quantify the tolerance of algae to acid and salinity treatments. The two animal species experienced more than 80 % mortality at pH lower that pH 4 and the extreams of salinity (0~10 and 44 psu) after a 5-min of immersion. The quantum yield of S. fulvellum was not significantly different from controls (ambient pH and salinity) within the pH 4-10 range and within the 7-40 psu salinity range. Similarly, the quantum yield of S. fusiforme was not significantly different from controls within the pH 3-11 range and the 0-44 psu salinity range. Therefore, if pH and salinity conditions outside these ranges were used in commercial Sargassum culture, the removal of the two animal species would be higher, but quantum yield of algae would be substantially reduced. These results indicate that pH and salinity treatments could be used effectively to remove the phytal organisms without significantly affecting optimum quantum yield in S. fusiforme and S. fulvellum.

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Assessment of optimal depth and photon irradiance for cultivation of the brown alga, Sargassum fulvellum (Turner) C. Agardh

2007

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This study was aimed at determining the optimal depth and photon irradiance for growth of Sargassum fulvellum. Sampling and measurement of underwater irradiance were carried out at farms cultivating S. fulvellum at Wando, southwestern coast of Korea, from May 2004 to April 2005. Growth of thalli, underwater irradiance and photosynthetic quantum yield were measured over a range of depths for three culture stages. During their nursery cultivation stage (Stage I), length increase was greatest at 1.5 m depth (2.5±0.2 cm), where the average midday irradiance over 28 days was 488±58 μmol photons m −2 s −1 . During the pre-main cultivation stage (Stage II), the greatest length increase occurred at 1 m depth (10.9±0.1 cm) with an average irradiance of 845±169 μmol photons m −2 s −1 . For the main cultivation stage (Stage III) of the alga, thalli showed maximal length growth in March and early April at depths of 1-2 m and 3 m. These results suggest that growth at each cultivation stage of S. fulvellum could be controlled by depth of cultivation rope.

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Artificial seed production and cultivation of the edible brown alga, Sargassum fulvellum (Turner) C. Agardh: Developing a new species for seaweed cultivation in Korea

Cited by 14 publications

References 5 publications

Environmental factors on egg liberation and germling production of Sargassum muticum

Environmental factors on egg liberation and germling production of Sargassum muticum

Effect of pH and salinity on the removal of phytal animals during summer cultivation of Sargassum fusiforme and Sargassum fulvellum in Korea

Assessment of optimal depth and photon irradiance for cultivation of the brown alga, Sargassum fulvellum (Turner) C. Agardh

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