Effect of arachidonic acid supplementation on reproductive performance of tank-domesticated Penaeus monodon

Coman, Greg J.; Arnold, Stuart; Barclay, M.C.; Smith, David M.

doi:10.1111/j.1365-2095.2009.00716.x

Cited by 37 publications

(43 citation statements)

References 64 publications

(138 reference statements)

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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%

“…It is well established that the maturation diet fed immediately prior to spawning can drastically impact on egg quality and thus egg hatching in shrimp (Millamena, 1989, Bray and Lawrence, 1992, Cahu et al, 1995a, Cahu et al, 1994, Xu et al, 1994a, Wouters et al, 2001a, Wouters et al, 1999, Coman et al, 2007a, Coman et al, 2011, Hoa et al, 2009). The proximate analysis demonstrated that the diet containing MB had lower protein content than the control diet.…”

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

confidence: 99%

“…In Penaeid shrimp a large portion of ovarian HUFA is composed of the essential fatty acids arachidonic acid (ARA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) (Hoa et al, 2009). Broodstock diets rich in ARA, EPA and DHA have been linked to a number of favourable performance traits in Penaeid shrimp including: improved nutrient uptake and transfer, improved spawning activity, egg production, hatch rates and nauplii survival (Coman et al, 2011, Cahu et al, 1994, Palacios et al, 2001, Emerenciano et al, 2013b, Xu et al, 1994a. Interestingly, Wouters (2001a) noted that compound diets contain relative low levels of both ARA and EPA when compared with fresh-frozen feeds, and therefore may require further investigation in relation to spawning.…”

Section: Broodstock Nutritionmentioning

confidence: 99%

“…However, it is worth noting that many of these studies did not assess the condition of the ovaries directly; instead the biochemical composition of ovulated eggs or tissues at the completion of spawning were used as a proxy measure (e.g. Cahu et al, 1994, Cahu et al, 1995b, Coman et al, 2011, Xu et al, 1994b. This is due to the non-complementary nature of assessing reproductive performance and tissue biochemistry for a single individual.…”

Section: Introductionmentioning

confidence: 99%

“…The relationship between optimal nutrition and spawning performance has been investigated extensively in shrimp (Bray and Lawrence, 1992, Cahu et al, 1994, Cahu et al, 1995b, Coman et al, 2007a, Coman et al, 2011, Hoa et al, 2009, Millamena, 1989, Wouters et al, 2001a, Xu et al, 1994b, Chimsung, 2014. However, it is worth noting that many of these studies did not assess the condition of the ovaries directly; instead the biochemical composition of ovulated eggs or tissues at the completion of spawning were used as a proxy measure (e.g.…”

Section: Introductionmentioning

confidence: 99%

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

confidence: 99%

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

confidence: 99%

Section: Broodstock Nutritionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Goodall¹

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Arachidonic acid enhances reproduction in Daphnia magna and mitigates changes in sex ratios induced by pyriproxyfen

Ginjupalli

Gerard

Baldwin

2015

Enviro Toxic and Chemistry

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Arachidonic acid (AA) is one of only two unsaturated fatty acids retained in the ovaries of crustaceans, and an inhibitor of HR97g, a nuclear receptor expressed in adult ovaries. We hypothesized that as a key fatty acid, AA may be associated with reproduction and potentially environmental sex determination in Daphnia. Reproduction assays with AA indicate that it alters female/male sex ratios by increasing female production. This reproductive effect only occurred during a restricted P. subcapitata diet. Next, we tested whether enriching a poorer algal diet (C. vulgaris) with AA enhances overall reproduction and sex ratios. AA enrichment of a C. vulgaris diet also enhances fecundity at 1.0 and 4.0μM by 30–40% in the presence and absence of pyriproxyfen. This indicates that AA is crucial in reproduction regardless of environmental sex determination. Furthermore, our data indicates that P. subcapitata may provide a threshold concentration of AA needed for reproduction. Diet switch experiments from P. subcapitata to C. vulgaris mitigate some but not all of AA’s effects when compared to a C. vulgaris only diet, suggesting that some AA provided by P. subcapitata is retained. In summary, AA supplementation increases reproduction and represses pyriproxyfen-induced environmental sex determination in D. magna in restricted diets. A diet rich in AA may provide protection from some reproductive toxicants such as the juvenile hormone agonist, pyriproxyfen.

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Modulation of complex coordinated molecular signaling by 5HT and a cocktail of inhibitors leads to ovarian maturation of Penaeus monodon in captivity

Thiyagu

Subramaniya

Iyer

et al. 2019

Molecular Reproduction Devel

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In aquaculture practices, prawn cultivation holds the major share and Penaeus monodon is the main species cultured. The decline in production of P. monodon is mainly due to the limited availability of domesticated broodstock, which is attributed to its reproductive cycle, controlled by complex coordinated signaling mechanisms. Unilateral eyestalk ablation of domesticated females held in captivity is done to induce ovary development, which has certain disadvantages, including a high rate of mortality. Thus, developing alternative techniques for eyestalk ablation in captive broodstock is necessary to induce maturation of ovary. This study exemplifies the role of 5HT along with a cocktail of inhibitors (U0126, Rp-cAMP, and LY294002) in inducing ovarian maturation. In this study, inhibition of pERK by U0126 inhibited vitellogenesis-inhibiting hormone (VIH), which in turn led to the overexpression of vitellogenin. 5HT induces steroidogenesis (estradiol-17β) through induction of the gonadotropin-releasing hormone by activating calcium-calmodulin signaling. Steroidogenesis is also aided by synthesis of StAR protein. Estradiol-17β stimulates the formation of the maturation-promoting factor (MPF) complex by cdc25 activation and Myt1 inactivation. LY294002 aids in keeping cdc25 activated by inhibiting calcium-calmodulin induced phosphorylation of Akt which is a negative regulator of mitogen-activated protein kinases. VIH induced activation of Myt1, through protein kinase A (PKA), was inhibited by Rp-cAMP which inhibits adenylate cyclase, thus stabilizing the activated MPF complex. To conclude, the coordinated effect of inhibitors and 5HT accelerates the development of ovary from previtellogenic to matured oocytes, yielding high quality and quantity larvae compared with eyestalkablated P. monodon. K E Y W O R D S 5HT, calcium-calmodulin signaling, captivity, cdc25, ERK, MPF, Myt-1, ovarian maturation, Penaeus monodon, steroidogenesis, vitellogenesis

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Effect of arachidonic acid supplementation on reproductive performance of tank-domesticated Penaeus monodon

Cited by 37 publications

References 64 publications

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

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

Arachidonic acid enhances reproduction in Daphnia magna and mitigates changes in sex ratios induced by pyriproxyfen

Modulation of complex coordinated molecular signaling by 5HT and a cocktail of inhibitors leads to ovarian maturation of Penaeus monodon in captivity

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