High incorporation of esential fatty acids by the Rotifer Brachionus plicatilis fed on the Prymnesiophyte Alga Pavlova lutheri

Nichols, PD; Holdsworth, D; Volkman, JK; Daintith, M; Allanson, S

doi:10.1071/mf9890645

Cited by 26 publications

(13 citation statements)

References 17 publications

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“…Many attempts have been made to improve the nutritional quality of rotifers, and various enrichment methods have been described (Imada et al ., 1979 ;Watanabe et al ., 1983) . Diets such as microalgae, lipid emulsions, microparticulate or microcapsules containing lipids or lipids plus proteins and carbohydrates have been employed (Gatesoupe & Luquet, 1981 ;Walford & Lam, 1987 ;L€ger et al ., 1989 ;Nichols et al ., 1989 ;Rodriguez-Rainuzzo et al ., 1989 ;Kissil & Koven, 1990 ;Linares et al ., 1990) . Enrichment of rotifers could be achieved by feeding them microalgae containing those EFA .…”

Section: Introductionmentioning

confidence: 99%

Lipid classes and fatty acid composition of rotifers (Brachionus plicatilis) fed two algal diets

Fernández‐Reiriz

Labarta

1996

Hydrobiologia

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Rotifers (Brachionus plicatilis), maintained on baker's yeast, were fed for 24h upon two algal diets, Isochrysis galbana (diet A) and Isochrysis galbana + Nannochloropsis gaditana (diet B) . (These algal diets were selected for their potential use as essential fatty acid (EFA) boosters, taking into account the requirements of fish larvae) . The effect of these algal diets on total lipid content, lipid classes and fatty acid composition was studied . The total lipid content increased after feeding upon both diets but no significant differences were found between the two types . Neutral lipid and polar lipid contents increased and a positive correlation was observed between the neutral lipids content of rotifers and that of the food supplied . However, the content of polar lipids in rotifers did not depend upon that of the diet . The increase in neutral lipid content was found to be higher in rotifers fed upon diet B, compared to diet A which increased the phospholipid content . Non-enriched rotifers contained only small amounts of polyenoic fatty acids, i .e . 18 :3n-6, 18 :3n-3, 20 :4n-6, 20 :5n-3 and 22 :6n-3, the contents of which increased significantly by feeding both diets . The EFA composition (20 :4n-6, 20 :5n-3 and 22 :6n-3) of neutral lipids and phopholipids in rotifers reflected the EFA composition of each diet. Diet B-fed rotifers had the highest content in 20 :4n-6 and 20 :5n-3, whereas rotifers fed diet A and the highest 22 :6n-3 content. The mixed diet 1L galbana + N. gaditana enhanced substantially the composition of lipid classes i .e . neutral lipids and of n-3 PUFA of rotifers in comparison with Isochrysis or yeast diets .

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Section: Introductionmentioning

confidence: 99%

Lipid classes and fatty acid composition of rotifers (Brachionus plicatilis) fed two algal diets

Fernández‐Reiriz

Labarta

1996

Hydrobiologia

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“…This PUFA is a major fatty acid in the prymnesiophyte Isochrysis sp. (T-ISO) and in the cryptomonad Chroomonas salina (Volkman et al 1989). It may be passing though the food chain to later-stage phyllosomas.…”

Section: Fatty Acids-wild Southern Rock Lobstermentioning

confidence: 99%

“…We undertood this task to examine the feasibility of analysing preserved larval samples; if possible, analysis of the lipid composition of archived larval samples would enable aquaculturists to manipulate diets more effectively to provide the correct lipid composition to larvae. Enrichment studies using essential fatty acids such as EPA and DHA have been successfully carried out on the rotifer Brachionus plicatilis (e.g., by Nichols et al 1989;Lewis et al 1998). Enrichment studies with the brine shrimp Artemia salina have been conducted with omega-3 essential fatty acids to improve larval fish culture (Watanabe et al 1982;Evjemo et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Lipids and nutrition of the southern rock lobster, Jasus edwardsii, from hatch to puerulus

Phleger¹,

Nelson²,

Mooney³

et al. 2001

Mar. Freshwater Res.

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We examined the lipid class and fatty-acid composition of the southern rock lobster, Jasus edwardsii, phyllosomas larvae and puerulus stage to improve understanding of their nutrition in relation to aquaculture. Lipid is critical in the nutrition of larval crustaceans, including lobsters. Specimens were from Tasmanian waters, Australia, and North Island, New Zealand, waters. Analyses were by TLC-FID and capillary GC and GC-MS. Phyllosomas larvae and nektonic pueruli were low in storage lipid (triacylglycerol), and phospholipid was the major lipid class. Sterol, mainly cholesterol, was the next most abundant class. The ratio of the essential omega-3 fatty acid eicosapentaenoic acid (EPA) to the omega-6 fatty acid arachidonic acid (AA) was lower in newly hatched phyllosomas (1.2-1.3) than in other phyllosomas (stages III-XI; 2.8-6.7) and pueruli (3.8). Ratios of the omega-3 fatty acid DHA (docosahexaenoic acid) to EPA were also lower in newly hatched phyllosomas (0.5) than in later-stage phyllosomas (1.5-2.1) and pueruli (1.2). We have followed up these compositional data by successfully enriching the live diet (Artemia) of early phyllosomas with AA, EPA and DHA. This dietary manipulation has achieved ratios of these key polyunsaturated fatty acids similar to those of wild phyllosomas. These findings will be of significance to the future of rock-lobster aquaculture.

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“…For instance, PUFA-rich microalgae, such as Pavlova sp. and Isochrysis sp., have been successfully fed to zooplankton to enrich them in DHA [115]. However, when the level of enrichment attained is not sufficient, commercial oil-emulsions are often used.…”

Section: Use Of Microalgae To Enrich Zooplanktonmentioning

confidence: 99%

Nutritional Value and Uses of Microalgae in Aquaculture

Guedes¹,

Malcata²

2012

Aquaculture

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High incorporation of esential fatty acids by the Rotifer Brachionus plicatilis fed on the Prymnesiophyte Alga Pavlova lutheri

Cited by 26 publications

References 17 publications

Lipid classes and fatty acid composition of rotifers (Brachionus plicatilis) fed two algal diets

Lipid classes and fatty acid composition of rotifers (Brachionus plicatilis) fed two algal diets

Lipids and nutrition of the southern rock lobster, Jasus edwardsii, from hatch to puerulus

Nutritional Value and Uses of Microalgae in Aquaculture

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