Seasonal growth activity of local and foreign gracilarioid strains in Israel

Levy, Israel; Friedländer, Michael

doi:10.1007/bf02182397

Cited by 9 publications

(8 citation statements)

References 18 publications

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“…The availability of inorganic nutrients is one of the main factors controlling the growth and productivity of seaweeds (Bird et al 1982;Friedlander and Ben-Amotz 1991;Lobban 1994;Barsanti and Gualtieri 2006). In previous reported trials using Ulva rigida and Gracilaria bursa-pastoris in outdoor growth settings, SGRs were in the 15-30 % day −1 range (Beardall 1989;Msuya and Neori 2010;Nielsen et al 2011) and 5-10 % day −1 range (Friedlander and Ben-Amotz 1991;Levy and Friedlander 1994), respectively. Our results for Ulva growth (12-16 % day −1 ) were also similar to previous studies in which various Ulva species were integrated to land-based multi-trophic aquaculture using tanks (Vandermeulen and Gordin 1990;Neori et al 1991;Neori et al 1998;Copertino et al 2008).…”

Section: Discussionmentioning

confidence: 92%

“…Photon flux altogether also likely decrease from August to November (Israel et al 2005). The effect of seasonality on growth and biochemical composition has been documented in the past for many species of marine macroalgae (Rosenberg 1982;Levy and Friedlander 1994;MarinhoSoriano et al 2006). The growth patterns of G. bursa-pastoris did not show significant differences between culture seasons.…”

Section: Discussionmentioning

confidence: 96%

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Growth, protein and carbohydrate contents in Ulva rigida and Gracilaria bursa-pastoris integrated with an offshore fish farm

2015

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Low-technology practices are generally the rule when cultivating marine macroalgae, and they do not necessarily comply with sustainability requirements. When integrated with other marine organisms in land-based setups, seaweed culture can be sustainable also providing environmental benefits. Major challenges of such integrated aquaculture systems, however, are in sea-based setups. The current study examined the growth rates of Ulva rigida and Gracilaria bursa-pastoris, as well as their protein and carbohydrate contents, when exposed to different distances from an offshore, fed-fish cage system. Nutrient levels in seawater were consistently high downstream from the fish cages, significantly enhancing the specific growth rates and cellular contents of starch and soluble protein in these two seaweeds. Specifically, daily maximal growth rates were 17 % day −1 for U. rigida and 10 % day −1 for G. bursa-pastoris, maximal starch contents were 22 and 21 %, respectively, and maximal protein contents were on a dry weight basis 7 and 13 %, respectively. When repositioned at low ambient nutrient levels for 48 h, the starch and the carbohydrate levels increased by 129 and 131 % for U. rigida and by 198 and 150 % for G. bursa-pastoris, respectively. Altogether, this study supports implementing future viable mean of sustainable macroalgae cultivation by taking advantage of excessive nutrients released from an offshore fish farm.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 96%

Growth, protein and carbohydrate contents in Ulva rigida and Gracilaria bursa-pastoris integrated with an offshore fish farm

2015

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“…This study at 75 pmol photon m-2 s-I. Optimal growth temperature at the same PFD in Argentinian and both Nambibian strains 16'C, August mean maximum sea temperature 16°C (Levy & Friedlander 1994). Optimal growth temperature 24"C+ in the Norwegian strain at 37 pmol photon m-2 s-', (Rueness & Tananger 1984), August mean maximum sea temperature above 20°C, as on the Swedish west coast.…”

Section: Gracilariopsis Longissimamentioning

confidence: 76%

Northern distribution boundaries and thermal requirements of Gracilaria and Gracilariopsis (Gracilariales, Rhodophyta) in Atlantic Europe and Scandinavia

Steentoft

Farnharn

1997

Nordic Journal of Botany

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Using verified records from 1970 onwards, northern distribution boundaries in Atlantic Europe and Scandinavia are established for Gracilaria bursa‐pastoris, G. multipartita, G. gracilis and Gracilariopsis longissima, the last two species being distinguished for the first time in Northern Ireland, Scotland, Denmark, Germany and The Netherlands. Boundaries are shown to exist as zones (rather than lines) fluctuating in location and in time. Thermal requirements for survival and growth in G. gracilis have been determined, and the requirements for all four species are related to their geographical boundary zones.

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“…In aquaculture, screening for algae has largely focused instead on selecting species or strains that show fast growth under culture conditions (e.g., Levy and Friedlander, 1994), and on increasing the yield and quality of desired products (Buschmann et al, 2001; Friedlander, 2008). The use of “trap crops” and “push-pull” strategies in agriculture is also common (Vandermeer, 1989; Shelton and Badenes-Perez, 2006; Cook et al, 2007; Radcliffe et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Animals were collected from Jania rubens (Linnaeus) Lamouroux, Padina pavonica (Linnaeus) Thivy, and Ulva lactuca Linnaeus at the vicinity of the Israel Oceanographic and Limnological Research laboratory in Haifa (32°49′0″N 34°59′0″E). Gracilaria conferta (Schousboe ex Montagne) J. et G. Feldmann, G. cornea J. Agardh (wild phenotype), and G. lemaneiformis (Bory) Dawson Acleto et Foldvik (= Gracilariopsis lemaneiformis ) were obtained from aquaculture ponds, in which they had been cultured for several years (Levy and Friedlander, 1994; Friedlander, 2001; Friedlander et al, 2001). Specific details of the cultivation of these Gracilaria species in Israel, including growth conditions and impact of small grazers, are found in Friedlander (2008).…”

Section: Methodsmentioning

confidence: 99%

Feeding preferences of mesograzers on aquacultured Gracilaria and sympatric algae

Cruz‐Rivera

Friedländer

2011

Aquaculture

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While large grazers can often be excluded effectively from algal aquaculture operations, smaller herbivores such as small crustaceans and gastropods may be more difficult to control. The susceptibility of three Gracilaria species to herbivores was evaluated in multiple-choice experiments with the amphipod Ampithoe ramondi and the crab Acanthonyx lunulatus. Both mesograzers are common along the Mediterranean coast of Israel. When given a choice, the amphipod preferred to consume Gracilaria lemaneiformis significantly more than either G. conferta or G. cornea. The crab, however, consumed equivalent amounts of G. lemaneiformis and G. conferta, but did not consume G. cornea. Organic content of these algae, an important feeding cue for some mesograzers, could not account for these differences. We further assessed the susceptibility of a candidate species for aquaculture, G. lemaneiformis, against local algae, including common epiphytes. When given a choice of four algae, amphipods preferred the green alga Ulva lactuca over Jania rubens. However, consumption of U. lactuca was equivalent to those of G. lemaneiformis and Padina pavonica. In contrast, the crab showed a marked and significant preference for G. lemaneiformis above any of the other three algae offered. Our results suggest that G. cornea is more resistant to herbivory from common mesograzers and that, contrary to expectations, mixed cultures or epiphyte growth on G. lemaneiformis cannot reduce damage to this commercially appealing alga if small herbivores are capable of recruiting into culture ponds. Mixed cultures may be beneficial when culturing other Gracilaria species.

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Seasonal growth activity of local and foreign gracilarioid strains in Israel

Cited by 9 publications

References 18 publications

Growth, protein and carbohydrate contents in Ulva rigida and Gracilaria bursa-pastoris integrated with an offshore fish farm

Growth, protein and carbohydrate contents in Ulva rigida and Gracilaria bursa-pastoris integrated with an offshore fish farm

Northern distribution boundaries and thermal requirements of Gracilaria and Gracilariopsis (Gracilariales, Rhodophyta) in Atlantic Europe and Scandinavia

Feeding preferences of mesograzers on aquacultured Gracilaria and sympatric algae

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