Genetic analysis of the Pacific white shrimp (<i>Litopenaeus vannamei</i>): heterosis and heritability for harvest body weight

Genetic parameters of growth, reproductive efficiency and survival are important for designing successful genetic improvement programmes. In this study, a database was assembled and a meta-analysis was conducted using 87 peer-reviewed published studies on genetic parameters of 63 economically important traits reported across nine major farmed shrimp species. A total of 641 estimates of heritability, 978 estimates of genetic correlations and 658 estimates of phenotypic correlations were included in this study. Pacific white shrimp (Penaeus vannamei) was the most widely reported species followed by giant freshwater prawn (Marcobrachium rosenbergii) and black tiger prawn (Penaeus monodon). Published studies demonstrate large variability across heritability and correlation estimates. Consensus estimates were based on both unweighted and weighted averages. The traits were broadly classed into weight, morphology, growth rate, body composition, feeding efficiency, reproductive efficiency and survival. This meta-analysis revealed moderate-to-high heritability estimates for weight (0.30 ± 0.002), morphological (0.26 ± 0.003), growth rate (0.27 ± 0.01) and feeding efficiency (0.58 ± 0.07) traits, but low for body composition (0.06 ± 0.009), reproductive efficiency (0.11 ± 0.006) and survival traits (0.15 ± 0.003). Strong responses to selection were found among the shrimp species studied. We have developed a ShinyApp (https://khatk ar.shiny apps.io/shrimp_genet ics/) for visualization of the individual heritability estimates. In addition to the metaanalysis of genetic parameters, we have calculated the correlated responses among economically important traits and highlighted response to selection, realized heritability, social interaction and common environmental effects in shrimp breeding programmes in terms of industry implications. Consensus estimates suggest that there is sufficient additive genetic variation to carry out effective genetic improvement programmes in these species. K E Y W O R D S genetic and phenotypic correlation, genetic improvement, heritability, prawn, review | 1151 HASAN et Al. | 1153 HASAN et Al. TA B L E 1 Number of studies, study ID, species, country and trait abbreviation a of the traits studied Study No.

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“…documented a higher survival rate of line-crossed Pacific white shrimp compared with the control population. Lu et al (2016)…”

Section: Non-additive Genetic Variation In Shrimp Breeding Programmesmentioning

confidence: 99%

Meta‐analysis of genetic parameters of production traits in cultured shrimp species

et al. 2020

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“…Interest with white leg shrimp Litopenaeus vannamei culture has increased globally and locally in recent years, and is an economically important shrimp farmed worldwide (Lu et al 2015;FAO, 2015 ). With a global output of 4,156 000 tons in 2016 (FAO, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of some Protein Sources on White Shrimp Production under Lake Qarun Condition

Sadek

Nabawi

Metwaly

et al. 2020

Journal of Animal and Poultry Production

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The present study was conducted at Shakshouk Fish Research Station, Fayoum Governorate, National Institute of Oceanography and Fisheries (NIOF), Egypt to investigate the effect of protein sources (fish meal (FM), meat meal (MM), and FM + MM and plant protein (corn gluten meal CGM)) on growth parameter, feed utilization, carcass chemical composition and economic efficiency. Pacific white shrimp (Litopenaeus vannamei) juvenile with an average weight of 3 ±0.13g initial body weight were randomly distributed into eight rectangular fiberglass tanks of 1.5 m 3 water capacity at a rate of 40 juveniles/ tank. The experment was carried out from 21 September 2019 and continued for 80 days. The result showed that, survival rate was within the range 86.25-97.50%, with significant differences were observed. The highest total weight gain, daily gain and SGR values were obtained with the FM diet compared with the other diets (FM+MM, MM and CGM).The best FCR (lowest) was recorded with shrimp fed on FM, with insignificant differences among (FM, MM and FM+MM).The worst FCR was recorded with shrimp fed on CGM. The lowest protein content was recorded with shrimp fed on CGM; also the highest content of EE was with (CGM) diet. The best net returned and economic efficiency was recorded with diets contained fish meal followed by diet contained fish meal + meat meal then meat meal and the least CGM.These results indicated that the best growth rate for shrimp was obtained with feeding FM diet then feeding on FM+MM and MM diets under experimental conditions.

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“…Challenges can arise when the possibility of genotype by environment interactions (G × E) are considered for growth traits and survival at different salinities (Tan et al, ). Genetic parameters are only applicable to the certain environment where they are obtained (Lu et al, ; Ponzoni, Hamzah, Tan, & Kamaruzzaman, ). However, it was no estimates reported in broodstock genetic breeding under brackish water.…”

Section: Introductionmentioning

confidence: 99%

Comparison of growth and reproduction performance of broodstock Pacific white shrimp Litopenaeus vannamei reared in oceanic and brackish water

et al. 2019

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This study provides a preliminary evaluation of feasibility of brackish water breeding. Shrimps were initially cultured at brackish water. Shrimps were reared at different stages (5, 6, 7 and 8 months, respectively), and 300 female shrimps were selected from each stage for growth at an enhanced salinity of 30 ppt. When the shrimps were sexually mature, the reproductive characteristics (mating rate, egg number and nauplii number) of the broodstock shrimps, quality of nauplii (malformation rate of nauplii) and quality of postlarvae (survival rate and desalination stress) were tested to evaluate of the effects of brackish water (10 ppt) on these shrimps. Oceanic water (30 ppt) for rearing shrimps was used as control group. Histopathological analysis of gonads and hepatopancreases from oceanic and brackish water shrimp was performed. The results showed that shrimps cultured for a maximum of 8 months in brackish water remained sexually mature. There were no significant differences regarding the quality of shrimps in the oceanic water and brackish water. However, the brackish water cultured shrimps were easily adapted to salinity changes. Our results demonstrate the good feasibility of the present scheme, in which the broodstock shrimps were cultured at a salinity of 10 ppt.

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Genetic analysis of the Pacific white shrimp (Litopenaeus vannamei): heterosis and heritability for harvest body weight

Cited by 34 publications

References 46 publications

Meta‐analysis of genetic parameters of production traits in cultured shrimp species

Meta‐analysis of genetic parameters of production traits in cultured shrimp species

Effect of some Protein Sources on White Shrimp Production under Lake Qarun Condition

Comparison of growth and reproduction performance of broodstock Pacific white shrimp Litopenaeus vannamei reared in oceanic and brackish water

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