Reproductive performance of reciprocally crossed wild-caught and tank-reared Penaeus monodon broodstock

Coman, Greg J.; Arnold, Stuart; Peixoto, Sílvio; Crocos, Peter J.; Coman, Frank; Preston, Nigel P.

doi:10.1016/j.aquaculture.2005.07.028

Cited by 57 publications

(42 citation statements)

References 31 publications

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“…It is well documented that in a commercial environment, females from domesticated stocks rarely if ever develop fully mature ovaries before spawning unlike their wild-caught counterparts (Coman et al, 2006. In addition domesticated P. monodon produce far fewer eggs and spawn less frequently than their wild-caught counterparts (Klinbunga et al, 2009, Coman et al, 2006, Hall, 2003, Peixoto et al, 2005.…”

Section: Reproductive Performance Of Domesticated P Monodonmentioning

confidence: 99%

“…In addition domesticated P. monodon produce far fewer eggs and spawn less frequently than their wild-caught counterparts (Klinbunga et al, 2009, Coman et al, 2006, Hall, 2003, Peixoto et al, 2005. Peixoto et al (2005) noted that the ovaries of mature domesticated broodstock frequently contained high proportions of immature oocytes.…”

Section: Reproductive Performance Of Domesticated P Monodonmentioning

confidence: 99%

“…Coman et al, 2006. Recent improvements in husbandry and genetic selection have resulted in minor generational improvements to reproductive performance ), yet such improvements have not been comparable with or superior to the reproductive outputs observed in wild-caught broodstock.…”

Section: Introductionmentioning

confidence: 99%

“…These include superior growth and feed utilization (Glencross et al, 2013, increased harvest yields (Preston et al, 2009) and increased viral tolerance (Sellars et al, 2015a). Despite these improvements, the reproductive performance of domesticated broodstock remains inferior when compared with wild-caught broodstock , Peixoto et al, 2005, Coman et al, 2006. As a result, progress in widespread commercial domestication of P. monodon has been slow, leaving most farming operations to rely on stocks produced from wild-caught broodstock.…”

Section: Introductionmentioning

confidence: 99%

“…However, these authors also noted that seasonal or individual variation, presumably reflected a large-part in the nutritional condition of the stocks, could not necessarily be eliminated by short-term dietary changes, and that the diet consumed in the period prior to maturation significantly influenced subsequent reproductive performance. This has led some authors to speculate that variation in diet prior to capture may explain the disparate reproductive performance between wild and domesticated broodstock (Coman et al, 2006.…”

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: Reproductive Performance Of Domesticated P Monodonmentioning

confidence: 99%

Section: Reproductive Performance Of Domesticated P Monodonmentioning

confidence: 99%

Section: Introductionmentioning

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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Penaeid Prawns

Hai

Fotedar

Hảo

2011

Recent Advances and New Species in Aquaculture

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The study focused on the decline in the Marine fishery resources caught by the trawlers. Different Species of the Marine catch like Skates, Rays, Cat fish, Wolf herring, Anchovies, Stolphorous, Thryssa, OtherClupeids, Flying-fish, other perches, Gastropods and Big Pamfrets declined. The decline in catch rate is more for the species like Halibut followed by Stomatopods and Silver bellies. High valued species like.05) showed a declining trend which affects the economic sustainability of the trawler fishery in Kerala. The most prominent centre of the trawl catch in Kerala namely the Neendakara-Shakthikulangara marked a considerable decline in the varieties of the Marine resources caught as a comparison is made between the years 2002 and 2011.

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The complete genome sequence of Vibrio aestuarianus W‐40 reveals virulence factor genes

Huang

et al. 2018

MicrobiologyOpen

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Vibrio aestuarianus is an opportunistic environmental pathogen that has been associated with epidemics in cultured shrimp Penaeus vannamei. Hepatopancreas microsporidian (HPM) and monodon slow growth syndrome (MSGS) have been reported in cultured P. vannamei. In this study, we sequenced and assembled the whole genome of V. aestuarianus strain W‐40, a strain that was originally isolated from the intestines of an infected P. vannamei. The genome of V. aestuarianus strain W‐40 contains two circular chromosomes of 483,7307 bp with a 46.23% GC content. We identified 4,457 open reading frames (ORFs) that occupy 86.35% of the genome. Vibrio aestuarianus strain W‐40 consists primarily of the ATP‐binding cassette (ABC) transporter system and the phosphotransferase system (PTS). CagA is a metabolism system that includes bacterial extracellular solute‐binding protein. Glutathione reductase can purge superoxide radicals (O22−) and hydrogen peroxide (H2O2) damage in V. aestuarianus strain W‐40. The presence of two compete type I restriction‐modification systems was confirmed. A total of 42 insertion sequences (IS) elements and 16 IS elements were identified. Our results revealed a host of virulence factors that likely contribute to the pathogenicity of V. aestuarianus strain W‐40, including the virulence factor genes vacA, clpC, and bvgA, which are important for biofilm dispersion. Several bacitracin and tetracycline antibiotic resistance‐encoding genes and type VI secretion systems were also identified in the genome. The complete genome sequence will aid future studies of the pathogenesis of V. aestuarianus strain W‐40 and allow for new strategies to control disease to be developed.

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Reproductive performance of reciprocally crossed wild-caught and tank-reared Penaeus monodon broodstock

Cited by 57 publications

References 31 publications

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

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

Penaeid Prawns

The complete genome sequence of Vibrio aestuarianus W‐40 reveals virulence factor genes

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