High DHA content in Artemia is ineffective to improve Octopus vulgaris paralarvae rearing

Seixas, Paulo Castro; Rey-Méndez, Manuel; Valente, Luísa; Otero, Ana

doi:10.1016/j.aquaculture.2009.12.021

Cited by 43 publications

(48 citation statements)

References 43 publications

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“…The DHA/EPA ratio values obtained for the eggs of E. megalocyathus were similar to those reported for newly hatched paralarvae of O. vulgaris (1.7 by Navarro and Villanueva 2000 and 1.5 by Seixas et al 2010), and are within the range of variation found for mature gonads of O. vulgaris and O. defilippi (2.1 and 2.0, respectively, Rosa et al 2004). According to Sykes (2007), a correlation can be found between the DHA/EPA values and the quality of the developing eggs.…”

Section: Broodstock Diet and Rationsupporting

confidence: 72%

“…The lipid content in the yolk was similar to that reported for mature gonads of Octopus defilippi, higher than that found for mature gonads of O. vulgaris (Rosa et al 2004), and similar to that recorded for newly hatched paralarvae of O. vulgaris (14.7) (Seixas et al 2010).…”

Section: Broodstock Diet and Rationsupporting

confidence: 63%

“…El valor de lípidos del vitelo fue similar al reportado para gónadas maduras de Octopus defilippi, superior al de las gónadas maduras de O. vulgaris (Rosa et al 2004) y similar al valor encontrado en paralarvas recién eclosionadas de O. vulgaris (14.7) (Seixas et al 2010).…”

Section: Broodstock Diet and Rationunclassified

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Effect of broodstock diet on the fecundity and biochemical composition of eggs of the Patagonian red octopus (Enteroctopus megalocyathus Gould 1852)

et al. 2010

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Twelve females of the Patagonian red octopus Enteroctopus megalocyathus, of 1.4 ± 0.2 kg, were maintained at 12 ºC under three conditioning treatments: T1 (F10%), frozen fish at 10% daily body weight (bwt d–1); T2 (FC (3:1) 10%), mix (3:1) of frozen fish and fresh crab at 10% bwt d–1; and T3 (F7.5%), frozen fish at 7.5% bwt d–1. Egg laying was observed after four months of conditioning, when from 545 to 1100 ºC days had been reached, and when females had increased 1.5 times in body weight. Absolute fecundity reached 2129 eggs (±1182) per female in treatments T1 and T2, whereas in T3 fecundity reached only 56 eggs. The lowest values of perivitelline protein were obtained in T1 and T2, while total lipid content in the yolk was similar among treatments. The most frequent fatty acids in egg yolk were 16:0, 17:0, 17:1, 18:0, 20:1, 20:4n-6, 23:0, 20:5n-3, 22:5n-3, and 22:6n-3. Significant differences in fatty acid contents among treatments were observed only for 16:1 and 22:5n-3. The results showed that females can be conditioned for egg production even when fed a diet lacking crustaceans, and that a dietary reduction of 7.5% bwt d–1 diminished fecundity without affecting egg quality in terms of their biochemical composition.

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Section: Broodstock Diet and Rationsupporting

confidence: 72%

Section: Broodstock Diet and Rationsupporting

confidence: 63%

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Effect of broodstock diet on the fecundity and biochemical composition of eggs of the Patagonian red octopus (Enteroctopus megalocyathus Gould 1852)

et al. 2010

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“…Also, the higher protein/lipid ratio present in the AN diet (5.60 vs 3.77 and 2.90 for AH and AZ, respectively) could positively affect paralarval growth. Seixas et al (2010) reached similar conclusions and suggest that in order to sustain a good paralarvae growth, a minimum dietary protein/lipid ratio should be attained. Additionally, the high concentration of Nannochoropsis sp.…”

Section: Biochemical Composition Of Diets and Paralarvaementioning

confidence: 57%

“…Villanueva et al (2004) found that lysine, arginine and leucine represented about half of the total essential amino acids (EAA) in paralarvae. More recently, Villanueva and Bustamante (2006) also studied the possible importance of essential elements such as copper in the diet, and Seixas et al (2010) indicate Isochrysis galbana and Rhodomonas lens as the best microalgae combination to enrich Artemia used for O. vulgaris paralarvae.…”

Section: Introductionmentioning

confidence: 99%

Growth and survival of <i>Octopus vulgaris</i> (Cuvier 1797) paralarvae fed on three <i>Artemia</i>-based diets complemented with frozen fish flakes, crushed zooplankton and marine microalgae

Fuentes¹,

Sánchez²,

Lago³

et al. 2011

Sci. Mar.

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SUMMARY: During one month, paralarvae of common octopus (Octopus vulgaris) were fed 3 different diets: (1) Artemia sp. enriched with Isochrysis galbana (AI) complemented with sand eel (Hyperoplus lanceolatus) flakes (AH); (2) Artemia sp. enriched with crushed marine zooplankton (AZ); and (3) Artemia sp. cultured with Isochrysis galbana and further enriched with the microalga Nannochloropsis sp. (AN). The highest dry weight (1.6179±0.3861 mg) was registered with the AN diet and the best average survival (67.0%) with the AZ diet. Considering the highest dry weight obtained, the moderate high survival and the fact that with this diet it was possible to attain the adult stage, the AN diet was the most appropriate. The reasons for the best result in growth observed with AN are discussed as: (1) the combination of docosahexaenoic acid (DHA) provided by Isochrysis galbana and the high eicosapentaenoic acid (EPA) content present in Nannochloropsis sp.; (2) the fact that the higher protein/lipid ratio of this diet improves the final dry weight of the paralarvae; and (3) the fact that Nannochloropsis sp. could inhibit the harmful microflora growth in the rearing tank. Regarding nutritional aspects, DHA content per se is not the only determinant factor for growth and survival of O. vulgaris paralarvae, but the presence of a high protein/lipid ratio and a high phospholipid content in the diet could possibly explain the better quality and strength of the paralarvae.Keywords: Octopus vulgaris, paralarvae rearing, growth, survival, protein/lipid, DHA, EPA. RESUMEN: Crecimiento y supervivencia de paralarvas de OctOpus vulgaris (Cuvier 1797) alimentadas con tres dietas basadas en artemia complementadas con laminillas de pescado congelado, zooplancton triturado y microalgas marinas. -Paralarvas de pulpo común (Octopus vulgaris) fueron alimentadas, durante un mes, con tres dietas diferentes: (1) Artemia sp. enriquecida con Isochrysis galbana (AI) complementada con laminillas de lanzón (Hyperoplus lanceolatus) congelado (AH); (2) Artemia sp. enriquecida con zooplancton marino congelado (AZ) y (3) Artemia sp. cultivada con Isochrysis galbana y posteriormente enriquecida con la microalga Nannochloropsis sp. (AN). El peso seco más alto (1.6179±0.3861 mg) fue registrado con la dieta AN y la mejor supervivencia media (67.0%) con la dieta AZ. La dieta AN fue la más apropiada teniendo en cuenta el peso seco más alto, la supervivencia moderadamente elevada y el hecho de que con esta dieta fue posible alcanzar el estadio adulto. Se discuten las causas del mejor resultado de crecimiento observado con AN: (1) la combinación de DHA proporcionada por Isochrysis galbana y el alto contenido en EPA presente en Nannochloropsis sp.; (2) el ratio proteínas/lípidos más elevado de esta dieta puede mejorar el peso seco final de las paralarvas; y (3) es posible que Nannochloropsis sp. inhiba el crecimiento de microflora dañina en el tanque de cultivo. Con respecto a los aspectos nutricionales, el contenido en DHA per se no es el único factor determinante...

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Loligo vulgaris and Doryteuthis opalescens

Vidal¹,

Boletzky

2014

Cephalopod Culture

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High DHA content in Artemia is ineffective to improve Octopus vulgaris paralarvae rearing

Cited by 43 publications

References 43 publications

Effect of broodstock diet on the fecundity and biochemical composition of eggs of the Patagonian red octopus (Enteroctopus megalocyathus Gould 1852)

Effect of broodstock diet on the fecundity and biochemical composition of eggs of the Patagonian red octopus (Enteroctopus megalocyathus Gould 1852)

Growth and survival of <i>Octopus vulgaris</i> (Cuvier 1797) paralarvae fed on three <i>Artemia</i>-based diets complemented with frozen fish flakes, crushed zooplankton and marine microalgae

Loligo vulgaris and Doryteuthis opalescens

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