Feeding and growth of gilthead seabream (Sparus aurata L.) larvae in relation to the size of the rotifer strain used as food

Polo, A.; Yúfera, Manuel; Pascual, E.

doi:10.1016/0044-8486(92)90277-r

Cited by 54 publications

(25 citation statements)

References 15 publications

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“…Its mean body length and width were 83±11 μm and 40±6 μm respectively, which is 38.1% smaller and 60.3% narrower than lorica size of B. rotundiformis. It has been suggested that the availability of small live food organisms is important for successful rearing of fish larvae with small mouths (Eda, et al, 1990;Polo et al, 1992;Doi et al, 1997;Okumura, 1997;Tanaka et al, 2005;Olivotto et al, 2006;Akazawa et al, 2008;Soyano et al, 2008). Small live food organisms that have been offered to fish larvae include ciliate, bivalve larvae, sea urchin eggs, barnacle nauplii, oyster trochopores or copepods, but the results are still unsatisfactory due to the low nutritional value or difficulties of culturing the organisms at high density (Rimmer, 2000).…”

Section: Discussionmentioning

confidence: 99%

The minute monogonont rotifer Proales similis de Beauchamp: Culture and feeding to small mouth marine fish larvae

Wullur¹,

Sakakura²,

Hagiwara³

2009

Aquaculture

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The body length and width of Proales similis (mean±SD; 83±11 μm and 40±6 μm, respectively) is 38.1% smaller and 60.3% narrower than that of Brachionus rotundiformis.Due to its small size, P. similis has potential for rearing marine fish larvae which require first food smaller than B. rotundiformis. We examined the feasibility of using P. similis as live food by analyzing its life history, population growth and feeding incidence by fish larvae. P. similis produced first offspring on 2.5-2.8 days after hatch. Females produced 4.3-7.8 offspring during their 2.9-3.4 day reproductive period. P. similis grew well at temperatures 25 to 35 0 C (density = 250 to 1030 ind./ml; r = 0.68 to 0.81 day -1 ) and at salinities 2 to 15 ppt (density = 360 to 500 ind./ml; r = 0.73 to 0.78 day -1 ). Population density of P. similis was higher than B. rotundiformis after 8 days of culture period with either N. oculata and C. vulgaris as food. In mass culture, population density of P. similis increased from 25 to 2,400 ind./ml (r = 0.42 day -1 ) after 11 days. Results from feeding experiments confirm that P. similis is consumed by seven-band grouper (Epinephelus septemfasciatus) larvae. The larvae demonstrated the highest feeding rate at 20 ind./ml of P.similis.

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Section: Discussionmentioning

confidence: 99%

The minute monogonont rotifer Proales similis de Beauchamp: Culture and feeding to small mouth marine fish larvae

Wullur¹,

Sakakura²,

Hagiwara³

2009

Aquaculture

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“…Eggs were obtained from the ''Planta de Cultivos Marinos'' of the University of Cádiz (Puerto Real, Spain) and placed in 200-L incubator tanks in a flow-through system, with constant aeration. After hatching, the larvae were transferred into 300-L tanks and fed on Nannochloropsis gaditana (Fitoplancton marino, EasyAlgae) enriched rotifers (Brachionus rotundiformis and B. plicatilis; 5-15 per ml of tank water) from 5 to 25 days after hatching (DAH), according to the feeding protocols established by Polo et al [22]. After 14 DAH, N. gaditana and Isochrysis galvana (T-Iso) enriched Artemia nauplii were also provided at 1-2 nauplii per ml.…”

Section: Experimental Conditionsmentioning

confidence: 99%

Dietary Lecithin Source Affects Growth Potential and Gene Expression in Sparus aurata Larvae

Martins

Estévez

Stickland

et al. 2010

Lipids

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Soybean lecithin (SBL), used as a phospholipid source in larval fish diets, may compromise growth and survival in marine species, and affect gene expression, due to differences in fatty acid composition relative to marine lecithins (ML). The potential of SBL as a phospholipid source in gilthead seabream microdiets as compared to ML was evaluated. Two stocking densities were tested in order to exacerbate possible dietary effects: 5 and 20 larvae L(-1). Larvae reflected dietary fatty acid profiles: linoleic acid was higher, whereas eicosapentaenoic and arachidonic acids were lower in SBL fed groups than in ML fed larvae. Highest stocking density decreased survival, and led to elevated saturates and lower docosahexaenoic acid levels in polar lipid. Muscle histology observations showed hindered growth potential in SBL fed larvae. Despite similar cortisol levels between treatments, higher glucocorticoid receptor (GR), as well as hormone-sensitive lipase (HSL) mRNA levels in SBL fed groups revealed a role for fatty acids in gene regulation. Further analysed genes suggested these effects were independent from the hypothalamus-pituitary-interrenal axis control and the endocannabinoid system. Cyclooxygenase-2 and gluconeogenesis seemed unaffected. For the first time in fish, a link between dietary lecithin nature and HSL gene transcription, perhaps regulated through GR fatty acid-induced activation, is suggested. Enhanced lipolytic activity could partly explain lower growth in marine fish larvae when dietary ML is not provided.

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“…In this species, at a rearing temperature of 20°C, the start of feeding occurs by Days 3 to 4 after hatching and the point of irreversible starvation by Days 7 to 8, and 100% mortality by starvation is attained by Days 10 to 11. During the first days of feeding, larvae select small rotifers (S-type Brachionus; 90-175 Fm length), followed by large ones (L-type; 140-275 pm length) by Day 9 after hatching (Polo et al 1992). Artemia nauplii are added from Days 14 to 15.…”

Section: Introductionmentioning

confidence: 99%

Testing protein-walled microcapsules for the rearing of first-feeding gilthead sea bream (Sparus aurata L.) Larvae

Yúfera¹,

Sarasquete²,

Fernández‐Díaz³

1996

Mar. Freshwater Res.

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Two basic types of protein-walled microcapsules were developed with the aid of using different preparation techniques. One type (Type A) was spherical and hard-walled, whereas the other (Type G) was irregularly shaped and soft-walled. The present work examined the larval growth and development of Sparus aurata reared either with these microcapsules as the sole food source or with a mixed diet of microcapsules and rotifers from the start of feeding. Larvae fed on Type A microcapsules evacuated them practically intact. These larvae showed strong degeneration of the gut epithelium, liver and pancreas and died within two to three days after the onset of feeding. In contrast, larvae fed from first feeding with Type G microcapsules alone ingested and broke down the particles from the onset of feeding. No larval growth was observed, but some larvae were still alive at the end of the experiment (Day 13). Larvae reared with a mixed diet, including Type G microcapsules and a small amount of rotifers (0.5 rotifer m~-'), showed in general normal development of gut epithelium. These larvae had good growth but survival was reduced to one-half of that obtained under routine rearing of larvae fed on rotifers alone.Type G microcapsules appear to represent an adequate departure point for the development of an inert diet able to support larval growth in marine fish.

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Feeding and growth of gilthead seabream (Sparus aurata L.) larvae in relation to the size of the rotifer strain used as food

Cited by 54 publications

References 15 publications

The minute monogonont rotifer Proales similis de Beauchamp: Culture and feeding to small mouth marine fish larvae

The minute monogonont rotifer Proales similis de Beauchamp: Culture and feeding to small mouth marine fish larvae

Dietary Lecithin Source Affects Growth Potential and Gene Expression in Sparus aurata Larvae

Testing protein-walled microcapsules for the rearing of first-feeding gilthead sea bream (Sparus aurata L.) Larvae

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