Effect of Dietary Phospholipids and n-3 Highly Unsaturated Fatty Acids on Ovarian Development of Kuruma Prawn.

Alava, Veronica R.; Kanazawa, Akio; Teshima, Shin‐ichi; Koshio, Shunsuke

doi:10.2331/suisan.59.345

Cited by 62 publications

(38 citation statements)

References 12 publications

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“…maturation process. This observation is supported by findings of Alava et al 1993b who delayed ovarian maturation in M. japonicus by feeding them a diet without Ž y1 . supplementary vitamin E. The levels of a-tocopherol in mature ovaries 374. .…”

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confidence: 77%

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Lipid composition and vitamin content of wild female Litopenaeus vannamei in different stages of sexual maturation

et al. 2001

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Wild Litopenaeus Õannamei females in different stages of sexual maturation were sampled, Ž . including spent females and their nauplii, for determination of the lipid content, lipid class LC Ž . composition, fatty acid FA composition, vitamin C content and vitamin E content. Free FA Ž . Ž . Ž . Ž . FFA , triacylglycerol TAG , phosphatidylcholine PC and sterol esters SE were the dominant Ž . LC in the midgut gland. TAG and phospholipids PL , mainly PC and phosphatidylethanolamine Ž .Ž . Ž . PE , were the dominant ovarian LC. Neutral lipids NL prevailed over polar lipids POL in midgut gland lipids, while ovarian lipids displayed an inverse relationship. An increase in ovarian Ž . Ž . TL was observed from stage 0 immature to stage 1 early maturing . Later, from stage 1 to stage Ž . 2 mid maturing , a decrease in midgut gland TL was observed. TAG was most responsible for these changes in TL. Lipids were preferentially transferred to the nauplii, which contained relatively high TAG and PC levels. In both midgut gland and ovaries, 16:00, 18:00, 16:1n y 7, Ž . Ž . 18:1n y 9, arachidonic acid ARA; 20:4n y 6 , eicosapentaenoic acid EPA; 20:5n y 3 and Ž . docosahexaenoic acid DHA; 22:6n y 3 were the principal FA. All tissues and nauplii displayed n y 3 ) n y 6 and EPA ) DHA relationships, and contained high proportions of n y 3 highly Ž . unsaturated FA n y 3 HUFA . During sexual maturation, the sum of poly-unsaturated FA Ž . PUFA decreased in the ovaries due to the decrease in n y 6 PUFA such as ARA. The sum of Ž . mono-unsaturated FA MUFA , on the other hand, increased in the ovaries. AA levels were high ) Corresponding author. Laboratory of Aquaculture and Artemia Reference Center, Ghent University, Rozier 44, B-9000 Gent, Belgium. Tel.: q32-9-264-37-54; fax: q32-9-264-41-93.Ž . E-mail address: r.wouters@inve.be R. Wouters . Wouters et al.r Aquaculture 198 2001 307-323 308 in immature, maturing and mature ovaries. They were low in the ovaries of spent females and nauplii. Vitamin E levels were low in immature ovaries, increased substantially during ovarian maturation, and then decreased again upon spawning. High vitamin E levels were retained in the nauplii. The findings of this study, combined with those reported in related studies, suggest the importance of n y 3 HUFA for larval development, of vitamin C for egg development and hatching, and of vitamin E for ovarian maturation and larval development. These nutrients cannot be synthesised de novo by shrimp, and should be included at high levels in the broodstock diet. q

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confidence: 77%

“…Ž . al., 1991. Alava et al 1993b observed retarded ovarian development in M. japonicus when vitamins A, C and E were not included in their diet.…”

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confidence: 99%

Lipid composition and vitamin content of wild female Litopenaeus vannamei in different stages of sexual maturation

et al. 2001

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“…broodstock performance. Alava et al 1993a obtained retarded ovarian development in Ž . M. japonicus fed a HUFA-free diet.…”

Section: Fatty Acidsmentioning

confidence: 99%

Penaeid shrimp broodstock nutrition: an updated review on research and development

et al. 2001

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This paper reviews the current knowledge on shrimp broodstock nutrition with special reference to developments during the last decade. Biochemical studies and diet studies are discussed with the aim of identifying the nutrients that are important to sustain optimal shrimp maturation, reproduction and offspring quality. Additionally, an overview is given of the efforts to reveal the nature of maturation-stimulating factors in fresh food, and of the use and performance of commercial and experimental artificial diets. q

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“…Notably, the diet fed in the present study contained 10% more MB, which may have made the pelleted diet less palatable overall, reducing uptake of the pelleted maturation diets. In addition, astaxanthin (derived from Carophyll Pink), arachidonic acid (ARASCO ® ) and phospholipids (in the form of krill meal) are known to improve reproductive performance and embryonic and larval development (Alava et al, 1993, Coman et al, 2011, Wouters et al, 2001a, and thus their inclusion within chapter 2's maturation diets may have served to satisfy or offset nutritional requirements which were lacking in the current experiments commercial formulation.…”

Section: However These Results Contrast To the Positive Effects On Rmentioning

confidence: 99%

“…A number of broodstock nutrition studies have examined the effect of varying quantities of nutrient classes and/or compounds within such broodstock feeding regimes (Alava et al, 1993, Cahu et al, 1994, Xu et al, 1994a, Marsden et al, 1997, Naessens et al, 1997, Hoa et al, 2009, Emerenciano et al, 2013b, Emerenciano et al, 2013a, Coman et al, 2007a, Chimsung, 2014, Wouters et al, 2001a, Wouters et al, 2001b. Recent studies have suggested that biofloc technology (BFT) may help improve reproductive performance in Penaeid shrimp (Emerenciano et al, 2012, Emerenciano et al, 2013b, Emerenciano et al, 2013c, Braga et al, 2015.…”

Section: Introductionmentioning

confidence: 99%

Improving the Reproductive Performance of Domesticated Giant Tiger Shrimp, Penaeus monodon

Goodall¹

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The Giant or Black Tiger Shrimp, Penaeus monodon, is an economically significant aquaculture species globally, producing 4.5 million tonnes of product annually at a value of US$ 23.5 billion (FAO, 2016a). Recent innovations in the domestication and selective breeding of P. monodon have resulted in significant improvements in growth rate, survival and pathogen tolerance. However, the reproductive performance of domesticated stocks is inferior compared to that of wild-caught broodstock. Significant reductions in the number of females maturing, egg and nauplii production and hatch rates are commonly reported for domesticated stocks relative to their wild-caught counterparts.The complexities surrounding reduced reproductive performance in domesticated P. monodon are underpinned by two critical issues: 1) a poor understanding of the specific nutritional requirements for reproduction in the species and; 2) a lack of clarity as to the characteristics that define a 'good spawner' -particularly on a biochemical and molecular level. The studies that make up this thesis employed a multidisciplinary approach to assess nutritional, biochemical, and molecular factors that relate to broodstock reproductive performance. Primarily this thesis sought to: (1) investigate whether the current constraints to reproductive performance in domesticated stocks could be overcome by including the microbial biomass derived bioactive Novacq™ (Patent #2008201886) within pelleted diets; (2) evaluate whether current broodstock maturation diets are limiting in relation to repeated spawning and; (3) characterise key interactions between micronutrients and regulatory gene(s) and/or pathways linked to reproduction.A series of reproductive performance trials were undertake to assess the effect of incorporating microbial biomass (Novacq™) within pelleted maturation diets. Preliminary farm-based trials observed significant increases to maturation rate, egg production and nauplii production when domesticated broodstock were fed an experimental pelleted diet containing the Novacq™ ingredient (20% Novacq™ inclusion rate, 2.4% of total diet fed). However, in a subsequent trial conducted under controlled experimental conditions, broodstock fed commercial-grade pelleted diets (30% Novacq™, 5.5% of total diet fed) exhibited a significant decrease in egg hatch rate. Reductions in reproductive performance under controlled experimental conditions were attributed to a decrease in the quality of basal pellet diets, both as a function of increased Novacq™ inclusion and their commercial-based formulation. The above studies suggest the capacity to improve reproductive performance in domesticated P. monodon, using biofloc and its substituents, is highly dependent on the quality of the basal maturation diet fed.ii In response to the aforementioned studies, a trial was undertaken to identify potential factors limiting reproductive performance within current broodstock maturation diets. The effect of repeated spawning on reproductive performance and tissue bioche...

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Effect of Dietary Phospholipids and n-3 Highly Unsaturated Fatty Acids on Ovarian Development of Kuruma Prawn.

Cited by 62 publications

References 12 publications

Lipid composition and vitamin content of wild female Litopenaeus vannamei in different stages of sexual maturation

Lipid composition and vitamin content of wild female Litopenaeus vannamei in different stages of sexual maturation

Penaeid shrimp broodstock nutrition: an updated review on research and development

Improving the Reproductive Performance of Domesticated Giant Tiger Shrimp, Penaeus monodon

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