The role of the green seaweed Ulva as a dietary supplement for full life-cycle grow-out of Tripneustes gratilla

Cyrus, Mark D.; Bolton, John J.; Macey, Brett M.

doi:10.1016/j.aquaculture.2015.05.002

Cited by 32 publications

(43 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, in Strongylocentrotus droebachiens , the taste of gonads tends to deteriorate as the protein level is increased (Pearce, Daggett, & Robinson, ). Formulated diets should therefore provide enough energy in the form of dietary carbohydrates to meet the energy needs of sea urchins, while sparing the more expensive nutrients such as proteins (Cyrus et al., ; Hammer et al., ). A further consideration is the environmental impact of protein‐based aquafeeds (Basto Silva, Valente, Matos, Brandão, & Belmira, ).…”

Section: Discussionmentioning

confidence: 99%

“…The development of phagocytes is closely linked to the assimilation of nutrients from the diet. Recent echiniculture studies have therefore focused on the development of artificial diets designed to increase gonadal mass but also to obtain gonadal texture, taste and colour comparable to those of wild sea urchins (Cyrus, Bolton, & Macey, 2015;Takagi, Murata, Inomata, Endo, & Aoki, 2017;Zhang et al, 2017).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

et al. 2018

View full text Add to dashboard Cite

A pilot project aimed at testing roe enhancement strategies based on offshore Paracentrotus lividus cultures was conducted off the south‐east coast of Italy (Apulia Region). Adult sea urchins were reared in sea cages located 700 m offshore at a depth of 12 m for 3 months. The animals were fed once a week on two formulated diets, prepared mixing nutrients with agar 20 g/Kg and differing only in terms of the protein source: anchovy flour (Diet A) or krill flour (Diet K). At the end of the rearing trial, the gonad somatic index of sea urchins fed on formulated diets significantly exceeded that of wild sea urchins. Total FAA content in the gonads of wild sea urchins and Diet A‐fed sea urchins was similar, whereas in Diet K‐fed sea urchins it was significantly higher. In terms of fatty acids, the gonads contained SFAs, MUFAs and PUFAs. In visual and sensory assessment of gonads by panel test and electronic nose, the gonads of reared sea urchins were rated as being of better size, while no differences were recorded for coloration, taste and odour. This study shows that under these experimental conditions, commercial‐grade Paracentrotus lividus roe enhancement can be achieved after 3 months in sea cages.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In Cyrus et al (), the 20% Ulva inclusion (20U) diet was shown to have significantly better‐coloured gonads compared to the other formulated feeds, indicating that carotenoid pigments (e.g., β‐carotene) and/or their derivatives (e.g., echinenone) from Ulva where being incorporated into the gonad at higher concentrations, as its relative inclusion increases. Amino acid analysis of both kelp and Ulva indicates that they are high in alanine (Cyrus, Bolton, Scholtz, & Macey, ; Shuuluka et al ). Moreover, Shuuluka et al () showed that alanine concentrations in both wild and cultivated Ulva ( U. capensis & U. rigida ) are 10 times higher compared to leguminous plants.…”

Section: Discussionmentioning

confidence: 99%

The use of stable isotope ratios δ ¹³ C and δ ¹⁵ N to track the incorporation of Ulva and other important dietary ingredients into the gonads of the sea urchin Tripneustes gratilla

2019

Self Cite

View full text Add to dashboard Cite

In this study, we demonstrate how stable carbon (C) and nitrogen (N) isotope analysis can be used to estimate the allocation of specific dietary ingredients, incorporated into four artificially formulated feeds supplemented with varying amounts of dried seaweed Ulva armoricana (0, 50, 150 and 200 g/kg), to the production of gonads by Tripneustes gratilla over a 20‐week growth trial. Results indicate that U. armoricana is an important dietary ingredient for gonad production, accounting for an average of 37.33 ± 1.03% of the isotopic signal recorded for gonads at the end of the growth trial. This is significantly more than fish meal and soya, which only contributed an average of 11.40 ± 1.81 and 3.80 ± 0.09%, respectively, of the isotopic signal of the gonads. Maize and wheat each account for almost 25% of all the dietary ingredients used to formulate the feeds, but their relative contribution to gonad production only averaged 8.55 ± 0.58 and 3.80 ± 0.05%, respectively, among the diets. This indicates that, at least for gonad development, these ingredients may not be required at such high levels. These findings support previous data on the importance of Ulva in abalone and urchin diets, and demonstrate the value of stable isotope analysis for assessing the contribution of specific dietary ingredients in new feed formulations, particularly where growth of specific tissues is being investigated.

show abstract

“…; Cyrus et al . , ; Vizzini et al . ); the quantification of the colour CIE L, a, b parameters by spectrophotometry (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…; Cyrus et al . , ); the identification and quantification of carotenoids profile (e.g. Plank et al .…”

Section: Discussionmentioning

confidence: 99%

Meta‐analysis on nutrition studies modulating sea urchin roe growth, colour and taste

Lourenço

Valente

Andrade

2018

Reviews in Aquaculture

View full text Add to dashboard Cite

Sea urchin roe is highly appreciated worldwide as a gourmet product comparable to caviar. Research in echinoculture mainly focus on the production of high-quality roe which stands for large golden orange to yellow gonads with a distinct, sweet ocean taste known as uni. The scientific approaches to manipulate roe quality are diverse in terms of targeted species and manipulated factors as nutrition, environmental and husbandry conditions. In this study, a meta-analysis approach was applied to systematically review the research conducted between 2000 and 2017 aiming to enhance the sea urchin roe quality. The 48 studies selected and analysed here show that those targeting the growth of gonads were successful, independently of the selected species, the rearing system adopted, or the diet or nutrient tested. In contrast, most trials focusing on colour manipulation resulted in roe colour similar to the control group (sea urchins fed with algae). Only six studies aiming to enhance roe taste were selected but described inconclusive results. In conclusion, while the production of large gonads seems easily achievable, the enhancement of its colour and taste is still a challenge.

show abstract

The role of the green seaweed Ulva as a dietary supplement for full life-cycle grow-out of Tripneustes gratilla

Cited by 32 publications

References 45 publications

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

The use of stable isotope ratios δ ¹³ C and δ ¹⁵ N to track the incorporation of Ulva and other important dietary ingredients into the gonads of the sea urchin Tripneustes gratilla

Meta‐analysis on nutrition studies modulating sea urchin roe growth, colour and taste

Contact Info

Product

Resources

About

The role of the green seaweed Ulva as a dietary supplement for full life-cycle grow-out of Tripneustes gratilla

Cited by 32 publications

References 45 publications

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

The use of stable isotope ratios δ 13 C and δ 15 N to track the incorporation of Ulva and other important dietary ingredients into the gonads of the sea urchin Tripneustes gratilla

Meta‐analysis on nutrition studies modulating sea urchin roe growth, colour and taste

Contact Info

Product

Resources

About

The use of stable isotope ratios δ ¹³ C and δ ¹⁵ N to track the incorporation of Ulva and other important dietary ingredients into the gonads of the sea urchin Tripneustes gratilla