Comparing the low‐salinity tolerance of <i><scp>U</scp>lva</i> species distributed in different environments

Ichihara, Kensuke; Miyaji, Kazuyuki; Shimada, Shoichi

doi:10.1111/j.1440-1835.2012.00668.x

Cited by 16 publications

(7 citation statements)

References 29 publications

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“…Water temperatures reached up to 36.4°C, without any signs of degradation of biomass, and other species of filamentous Ulva can be grown in water temperatures up to 40°C [17] . In addition, filamentous species of Ulva generally have a broad tolerance towards a wide range of salinities, including as low as 5 psu over 7 days, without a significant decrease in the viability of cells [50] . This supports Ulva sp.…”

Section: Discussionmentioning

confidence: 99%

The Seeding and Cultivation of a Tropical Species of Filamentous Ulva for Algal Biomass Production

2014

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Filamentous species of Ulva are ideal for cultivation because they are robust with high growth rates and maintained across a broad range of environments. Temperate species of filamentous Ulva are commercially cultivated on nets which can be artificially ‘seeded’ under controlled conditions allowing for a high level of control over seeding density and consequently biomass production. This study quantified for the first time the seeding and culture cycle of a tropical species of filamentous Ulva (Ulva sp. 3) and identified seeding density and nursery period as key factors affecting growth and biomass yield. A seeding density of 621,000 swarmers m-1 rope in combination with a nursery period of five days resulted in the highest growth rate and correspondingly the highest biomass yield. A nursery period of five days was optimal with up to six times the biomass yield compared to ropes under either shorter or longer nursery periods. These combined parameters of seeding density and nursery period resulted in a specific growth rate of more than 65% day−1 between 7 and 10 days of outdoor cultivation post-nursery. This was followed by a decrease in growth through to 25 days. This study also demonstrated that the timing of harvest is critical as the maximum biomass yield of 23.0±8.8 g dry weight m−1 (228.7±115.4 g fresh weight m−1) was achieved after 13 days of outdoor cultivation whereas biomass degraded to 15.5±7.3 g dry weight m−1 (120.2±71.8 g fresh weight m−1) over a longer outdoor cultivation period of 25 days. Artificially seeded ropes of Ulva with high biomass yields over short culture cycles may therefore be an alternative to unattached cultivation in integrated pond-based aquaculture systems.

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Section: Discussionmentioning

confidence: 99%

The Seeding and Cultivation of a Tropical Species of Filamentous Ulva for Algal Biomass Production

2014

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“…Samples sequenced in this study are shown in bold.1 Blomster et al (1999).2 Tan et al (1999).3 Hayden et al (2003).4 Shimada et al (2003).5 Hiraoka et al (2004a).6 Hayden & Waaland (2004).7 Loughnane et al (2008).8 Heesch et al (2009).9 Ichihara et al (2009). 10 O'Kelly et al (2010.11 Kraft et al (2010).12 Mareš et al (2011).13 Horimoto et al (2011).14 Ichihara et al (2013).…”

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confidence: 96%

Systematics of green algae resemblingUlva conglobata, with a description ofUlva adhaerenssp. nov. (Ulvales, Ulvophyceae)

Matsumoto

Shimada

2015

European Journal of Phycology

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“…Hence, Ulva limnetica is the only known Ulva species which has managed to adapt itself to freshwater habitats without having lost all of its ability to survive in sea waters (Ichihara et al 2013). Previous experiments by Ichihara et al (2011) demonstrated the excessive expression of ULL (Ulva-lectin-like) genes in U. limnetica.…”

Section: Discussionmentioning

confidence: 98%

Differentiation of inland Ulva flexuosa Wulfen (Ulvaceae, Chlorophyta) from Western Poland

Rybak

Czerwoniec²

2015

Oceanological and Hydrobiological Studies

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I n t e r n a t i o n a l J o u r n a l o f O c e a n o g r a p h y a n d H y d r o b i o l o g y AbstractThe macroalgae representing the cosmopolitan Ulva flexuosa Wulfen species have been found in inland water ecosystems of Europe since the mid-1800s. The presence of the Ulva genus in waters of inland salt marshes was explained by high salinity of water in such systems. However, Ulva flexuosa thalli were found in lakes and rivers having no supply from strongly mineralized sources, either of natural or anthropogenic origin. The study focused only on populations of Ulva flexuosa subsp. pilifera (Kűtz.) M.J. Wynne and Ulva flexuosa subsp. paradoxa (C. Agardh) M.J. Wynne occurring in inland ecosystems isolated from seawater. The differentiation of inland U. flexuosa subsp. pilifera and subspecies paradoxa was assessed by using classical morphological data and molecular techniques. We found that only two subspecies of Ulva flexuosa Wulfen occur in inland water ecosystems of Poland. On the basis of the analysis combining morphological features with the ITS region and rbcL gene sequences, a small degree of differentiation of the two inland taxa was demonstrated. These two subspecies have high differentiation of the habitat niches. U. flexuosa subsp. paradoxa settled in habitats featuring high salinity levels, and the second subspecies pilifera occurred only in fresh waters.

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Comparing the low‐salinity tolerance of Ulva species distributed in different environments

Cited by 16 publications

References 29 publications

The Seeding and Cultivation of a Tropical Species of Filamentous Ulva for Algal Biomass Production

The Seeding and Cultivation of a Tropical Species of Filamentous Ulva for Algal Biomass Production

Systematics of green algae resemblingUlva conglobata, with a description ofUlva adhaerenssp. nov. (Ulvales, Ulvophyceae)

Differentiation of inland Ulva flexuosa Wulfen (Ulvaceae, Chlorophyta) from Western Poland

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