Genetic parameters and response to selection of harvest body weight of the Chinese shrimp Fenneropenaeus chinensis after five generations of multi-trait selection

Sui, Juan; Luan, Sheng; Luo, Kun; Meng, Xianhong; Cao, Baoxiang; Liu, Ning; Li, Wenjia; Lu, Xia; Chai, Zhan; Kong, Jie

doi:10.1016/j.aquaculture.2015.08.011

Cited by 26 publications

(26 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The breeding population of F. chinensis had experienced long-term artificial selection, and effective genetic improvements were proved 25 . Genetic loads were supposed to be purged more or less during continuous selection process.…”

Section: Discussionmentioning

confidence: 99%

“…On that basis, the breeding population has been successively selected for 13 years. Recently, a reliable evaluation research of phenotypic and genetic parameters showed that the accumulated realized response was effective in this core breeding population 25 , whereas the inbreeding study in the same population indicated an insusceptible result of inbreeding depression under long-term selection process 26 . This breeding population, in our view, provided good materials to study the way of existence and molecular mechanism of genetic load.…”

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Segregation distortion: high genetic load suggested by a Chinese shrimp family under high-intensity selection

Meng

Luan

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Segregation distortion is a common phenomenon found in most genetic mapping studies and is an important resource to dissect the mechanism of action in gene loci that cause deviation. Marine animals possess high genetic diversity and genomic heterozygosity, they therefore are ideal model organisms to study segregation distortion induced by selection. In the present study, we constructed a full-sib family of Fenneropenaeus chinensis and exerted high-intensity selection on 10,000 incipient progenies. 2b-RAD method was employed in remaining 273 individuals to develop genome-wide SNPs for segregating analysis and 41,612 SNPs were developed. 50.77% of 32,229 high-quality representative markers deviated from the expected Mendelian ratio. Results showed that most of these distorted markers (91.57%) were influenced at zygotic level. Heterozygote excess (53.07%) and homozygous deletions (41.96%) may both play an important role, sum of which explained 95.03% of distortion after fertilization. However, further results identified highly probable linkage among deleterious alleles, which may account for a considerable portion of heterozygote excess rather than single locus with heterozygote advantage. Results of this study support a major role of deleterious alleles in genetic load, thus in favor of partial dominance hypothesis. It would also offer necessary recommendations for the formulation of breeding strategy in shrimps.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Segregation distortion: high genetic load suggested by a Chinese shrimp family under high-intensity selection

Meng

Luan

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Within the same species, Preston, Crocos, Keys, Coman, and Koenig (2004) showed that, after four generations of selection, selected shrimp were 9 to 14% heavier than the non‐selected population. Sui, Luan, Luo, Meng, Cao, et al (2016) evaluated the response to selection of harvest body weight of the Chinese white shrimp. After five generations of multi‐trait selection, the accumulated realized genetic gain was 18.6%.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

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.

show abstract

“…Generally, selection based on phenotype is less accurate than using EBVs. In most studies, the phenotypic response tended to be biased upward due to the effects of uncontrolled environments (Charo‐Karisa et al, ; Sui et al, ; Sukhavachana et al, ). The EBV of 60 resistant families showed that the risk of mortality calculated from hazard ratio for the Cox model decreased to 36.4% whereas phenotypic response showed a decrease of 53.7%.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Selection response forStreptococcus agalactiaeresistance in Nile tilapiaOreochromis niloticus

Suebsong

Poompuang

Srisapoome

et al. 2019

Journal of Fish Diseases

View full text Add to dashboard Cite

The potential of selection to improve resistance to streptococcosis was evaluated in a commercial population of Nile tilapia in Thailand. The base generation (G0) consisted of offspring from 98 sires and 149 dams using a partly nested design. At 60 days post‐hatch, 30 fish from each family were injected intraperitoneally with a Streptococcosis agalactiae solution (1 × 109 CFU/ml) and evaluated for 14 days. Disease resistance was recorded as the number of days from challenge until death (DD) and as a binary (BIN) trait (dead/alive) on day 14. Three models were used for genetic analyses: Cox frailty model for DD; animal model for DD; and animal model for BIN. Age at challenge was fitted as a covariate and contemporary group as fixed or random effect, depending on the model. Fish from the 18 most resistant families were selected to produce the first generation (G1). Heritability estimates for G0 were 0.22, 0.14 ± 0.02 and 0.11 ± 0.02 for the Cox, linear DD and linear BIN models, respectively. Selection response indicated that the risk of death decreased to 54%, survival time increased to 3.4 days and survival rate increased to 21%. These results suggest that genetic improvement is possible for this population.

show abstract

Genetic parameters and response to selection of harvest body weight of the Chinese shrimp Fenneropenaeus chinensis after five generations of multi-trait selection

Cited by 26 publications

References 32 publications

Segregation distortion: high genetic load suggested by a Chinese shrimp family under high-intensity selection

Segregation distortion: high genetic load suggested by a Chinese shrimp family under high-intensity selection

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

Selection response forStreptococcus agalactiaeresistance in Nile tilapiaOreochromis niloticus

Contact Info

Product

Resources

About