scholarly journals Hyper-intensive farming white shrimp Litopenaeus vannamei (Decapoda: Penaeidae) in a seawater tank under semi-controlled conditions

2013 ◽  
Vol 5 (1) ◽  
pp. 69-74
Author(s):  
A. A. Ortega-Salas ◽  
L. A. Rendón M.
Keyword(s):  
Litopenaeus Vannamei ◽  
Maximum Likelihood Method ◽  
High Density ◽  
White Shrimp ◽  
Likelihood Method ◽  
Food Conversion ◽  
High Density Culture ◽  
Intensive Farming ◽  
Controlled Conditions ◽  
Commercial Size

Shrimp development to a commercial size in high density culture saves food and avoids predators and disease. Our study was conducted to calculate the growth of white shrimp Litopenaeus vannamei by hyper-intensive cultivation under semi-controlled conditions. We seeded at a density of 550 shrimp per m3 during the first cycle and 400 shrimp per m3 in the second cycle in an outdoor tank of 6m3or 6m2 covered with mesh, constant aeration. The shrimp were fed Artemia franciscana during the first two weeks and camaronina pellets (35% protein) as required, in food baskets, aftterwards. The temperature ranged from 22,3 to 31,3°C, pH 7,5-8,7, oxygen 4,26±1,43. The tanks are siphoned of debris every other day, and water was replaced according to a program. The food conversion ratio (FCR) was 1:1,3. The shrimp were measured weekly to calculate growth with the Bertalanffy model. Survival in the first cycle was 95,8 ( 97,9% for the second cycle). Population parameters (maximum likelihood method) for the first cycle were k=0,0301, L∞ =322,16 and t0 =-0,8852; second cycle: k=0,0203, L∞ =294,42 and t0 =-5,3771. There was rapid growth during the first 10 weeks. Biomass was 27kg for the first cycle (second: 16kg). KEY WORDSGrowth, high density, survival, biomass, semi-controlled conditions. 

scholarly journals Hyper-intensive farming of white shrimp Litopenaeus vannamei in a freshwater tank under semi-controlled conditions (Decapoda: Penaeidae)

2013 ◽  
Vol 5 (1) ◽  
pp. 63-68
Author(s):  
A. A. Ortega Salas ◽  
L. A. Rendón M.
Keyword(s):  
Litopenaeus Vannamei ◽  
Maximum Likelihood Method ◽  
Conversion Factor ◽  
White Shrimp ◽  
Likelihood Method ◽  
Food Conversion ◽  
Population Parameters ◽  
Intensive Farming ◽  
Controlled Conditions ◽  
Commercial Size

Developing shrimp to a commercial size in a confined freshwater space is important because it saves food and  because predators and diseases are avoided. Our study was conducted to calculate the growth of white shrimp Litopenaeus vannamei by hyper-intensive farming in fresh water from 0,5 to 5‰ and under semi-controlled conditions. We seeded at a density of 563 postlarvae/m3 or m2 during the first cycle and 400 postlarvae/m3 in the second cycle in an outdoor pond of 6m3 or m2 covered with a mesh. Aeration was constant, they were fed Daphnia magna during the first two weeks and then camaronina pellets containing 35% protein, in food baskets, as demanded. The temperature ranged from 22,3 to 31,3°C, pH between 7,5 and 8,7, the oxygen was 4,26±1,43mg/L; the ponds were cleaned of debris every other day, and water was changed according to a program. The food conversion factor (FCA) was 1:1,1. The shrimp were measured weekly to calculate growth using the Bertalanffy model. Survival in the first cycle was 88,1 and 95,8% for the second cycle. Population parameters by maximum likelihood method of the first cycle were k=0,0957, L∞ =146,98 and t0=-0,93; in the second cycle k=0,0172, L∞ =367,82 and t0=-4,60. The results indicate rapid growth during the first ten weeks. Biomass was obtained from 26kg for the first cycle and 16kg for the second cycle.KEY WORDSGrowth, density, survival, biomass, semi-controlled conditions.

scholarly journals Identification of a quantitative trait loci (QTL) associated with ammonia tolerance in the Pacific white shrimp (Litopenaeus vannamei)

2020 ◽  
Author(s):  
Digang Zeng ◽  
Chunling Yang ◽  
Qiangyong Li ◽  
Weilin Zhu ◽  
Xiuli Chen ◽  
...  
Keyword(s):  
Candidate Gene ◽  
Genetic Map ◽  
Litopenaeus Vannamei ◽  
Quantitative Trait ◽  
Pacific White Shrimp ◽  
High Density ◽  
White Shrimp ◽  
Genetic Studies ◽  
The Pacific ◽  
Ammonia Tolerance

Abstract Background: Ammonia is one of the most common toxicological environment factors affecting shrimp health. Although ammonia tolerance in shrimp is closely related to successful industrial production, few genetic studies of this trait are available. Results: In this study, we constructed a high-density genetic map of the Pacific white shrimp (Litopenaeus vannamei) using specific length amplified fragment sequencing (SLAF-seq). The constructed genetic map contained 17,338 polymorphic markers spanning 44 linkage groups, with a total distance of 6,360.12 centimorgans (cM) and an average distance of 0.37 cM. Using this genetic map, we identified a quantitative trait locus (QTL) that explained 7.41–8.46% of the phenotypic variance in L. vannamei survival time under acute ammonia stress. We then sequenced the transcriptomes of the most ammonia-tolerant and the most ammonia-sensitive individuals from each of four genetically distinct L. vannamei families. We found that 7546 genes were differentially expressed between the ammonia-tolerant and ammonia-sensitive individuals. Using QTL analysis and the transcriptomes, we identified one candidate gene (annotated as an ATP synthase g subunit) associated with ammonia tolerance. Conclusions: In this study, we constructed a high-density genetic map of L. vannamei and identified a QTL for ammonia tolerance. By combining QTL and transcriptome analyses, we identified a candidate gene associated with ammonia tolerance. Our work provides the basis for future genetic studies focused on molecular marker-assisted selective breeding.

scholarly journals Identification of a quantitative trait loci (QTL) associated with ammonia tolerance in the Pacific white shrimp (Litopenaeus vannamei)

2020 ◽  
Author(s):  
Digang Zeng ◽  
Chunling Yang ◽  
Qiangyong Li ◽  
Weilin Zhu ◽  
Xiuli Chen ◽  
...  
Keyword(s):  
Candidate Gene ◽  
Genetic Map ◽  
Litopenaeus Vannamei ◽  
Quantitative Trait ◽  
Pacific White Shrimp ◽  
High Density ◽  
White Shrimp ◽  
Genetic Studies ◽  
The Pacific ◽  
Ammonia Tolerance

Abstract Background: Ammonia is one of the most common toxicological environment factors affecting shrimp health. Although ammonia tolerance in shrimp is closely related to successful industrial production, few genetic studies of this trait are available. Results: In this study, we constructed a high-density genetic map of the Pacific white shrimp (Litopenaeus vannamei) using specific length amplified fragment sequencing (SLAF-seq). The constructed genetic map contained 17,338 polymorphic markers spanning 44 linkage groups, with a total distance of 6,360.12 centimorgans (cM) and an average distance of 0.37 cM. Using this genetic map, we identified a quantitative trait locus (QTL) that explained 7.41–8.46% of the phenotypic variance in L. vannamei survival time under acute ammonia stress. We then sequenced the transcriptomes of the most ammonia-tolerant and the most ammonia-sensitive individuals from each of four genetically distinct L. vannamei families. We found that 7546 genes were differentially expressed between the ammonia-tolerant and ammonia-sensitive individuals. Using QTL analysis and the transcriptomes, we identified one candidate gene (annotated as an ATP synthase g subunit) associated with ammonia tolerance. Conclusions: In this study, we constructed a high-density genetic map of L. vannamei and identified a QTL for ammonia tolerance. By combining QTL and transcriptome analyses, we identified a candidate gene associated with ammonia tolerance. Our work provides the basis for future genetic studies focused on molecular marker-assisted selective breeding.

scholarly journals QTL and transcriptomic analyses for ammonia tolerance in the Pacific white shrimp (Litopenaeus vannamei)

2019 ◽  
Author(s):  
Digang Zeng ◽  
Chunling Yang ◽  
Qiangyong Li ◽  
Weilin Zhu ◽  
Xiuli Chen ◽  
...  
Keyword(s):  
Candidate Gene ◽  
Genetic Map ◽  
Litopenaeus Vannamei ◽  
Pacific White Shrimp ◽  
High Density ◽  
White Shrimp ◽  
Phenotypic Variance ◽  
Genetic Studies ◽  
The Pacific ◽  
Ammonia Tolerance

Abstract Background: Ammonia is one of the most common toxicological environment factors affecting shrimp health. Although ammonia tolerance in shrimp is closely related to successful industrial production, few genetic studies of this trait are available. Results: In this study, we constructed a high-density genetic map of the Pacific white shrimp (Litopenaeus vannamei) using specific length amplified fragment sequencing (SLAF-seq). The constructed genetic map contained 807,505 polymorphic markers spanning 44 linkage groups, with a total distance of 6,360.12 centimorgans (cM) and an average distance of 0.37 cM. Using this genetic map, we identified a quantitative trait locus (QTL) that explained 7.41–8.46% of the phenotypic variance in L. vannamei survival time under acute ammonia stress. We then sequenced the transcriptomes of the most ammonia-tolerant and the most ammonia-sensitive individuals from each of four genetically distinct L. vannamei families. We found that 7546 genes were differentially expressed between the ammonia-tolerant and ammonia-sensitive individuals. Using QTL analysis and the transcriptomes, we identified one candidate gene (annotated as an ATP synthase g subunit) associated with ammonia tolerance. Conclusions: In this study, we constructed a high-density genetic map of L. vannamei and identified a QTL for ammonia tolerance. By combining QTL and transcriptome analyses, we identified a candidate gene associated with ammonia tolerance. Our work provides the basis for future genetic studies focused on molecular marker-assisted selective breeding.

Production of the Pacific White Shrimp,Litopenaeus vannamei, in High-Density Greenhouse-Enclosed Raceways Using Low Salinity Groundwater

2004 ◽  
Vol 15 (3-4) ◽  
pp. 1-19 ◽  
Author(s):  
Tzachi M. Samocha ◽  
Addison L. Lawrence ◽  
Craig A. Collins ◽  
Frank L. Castille ◽  
William A. Bray ◽  
...  
Keyword(s):  
Litopenaeus Vannamei ◽  
Pacific White Shrimp ◽  
High Density ◽  
White Shrimp ◽  
Low Salinity ◽  
The Pacific

scholarly journals Identification of a quantitative trait loci (QTL) associated with ammonia tolerance in the Pacific white shrimp (Litopenaeus vannamei)

BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Digang Zeng ◽  
Chunling Yang ◽  
Qiangyong Li ◽  
Weilin Zhu ◽  
Xiuli Chen ◽  
...  
Keyword(s):  
Candidate Gene ◽  
Genetic Map ◽  
Litopenaeus Vannamei ◽  
Quantitative Trait ◽  
Pacific White Shrimp ◽  
High Density ◽  
White Shrimp ◽  
Genetic Studies ◽  
The Pacific ◽  
Ammonia Tolerance

Abstract Background Ammonia is one of the most common toxicological environment factors affecting shrimp health. Although ammonia tolerance in shrimp is closely related to successful industrial production, few genetic studies of this trait are available. Results In this study, we constructed a high-density genetic map of the Pacific white shrimp (Litopenaeus vannamei) using specific length amplified fragment sequencing (SLAF-seq). The constructed genetic map contained 17,338 polymorphic markers spanning 44 linkage groups, with a total distance of 6360.12 centimorgans (cM) and an average distance of 0.37 cM. Using this genetic map, we identified a quantitative trait locus (QTL) that explained 7.41–8.46% of the phenotypic variance in L. vannamei survival time under acute ammonia stress. We then sequenced the transcriptomes of the most ammonia-tolerant and the most ammonia-sensitive individuals from each of four genetically distinct L. vannamei families. We found that 7546 genes were differentially expressed between the ammonia-tolerant and ammonia-sensitive individuals. Using QTL analysis and the transcriptomes, we identified one candidate gene (annotated as an ATP synthase g subunit) associated with ammonia tolerance. Conclusions In this study, we constructed a high-density genetic map of L. vannamei and identified a QTL for ammonia tolerance. By combining QTL and transcriptome analyses, we identified a candidate gene associated with ammonia tolerance. Our work provides the basis for future genetic studies focused on molecular marker-assisted selective breeding.

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