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凡纳对虾核心育种群生长和抗WSSV性状的遗传参数估计

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渔业科学进展 2024年第5期45卷 155-164页

作者：和怡婧李旭鹏栾生孔杰曹宝祥罗坤谭建曹家旺陈宝龙代平邢群刘绵宇强光峰刘杨隋娟孟宪红海水养殖生物育种与可持续产出全国重点实验室、中国水产科学研究院黄海水产研究所山东青岛266071 青岛海洋科技中心海洋渔业科学与食物产出过程功能实验室山东青岛266237 上海海洋大学水产科学国家级实验教学示范中心上海201306 邦普种业科技有限公司山东潍坊261312

为开展凡纳对虾(Penaeus vannamei)生长和白斑综合征病毒(white spot syndrome virus,WSSV)抗性复合选育,本研究以凡纳对虾59个核心育种群家系1770尾77~94日龄的个体为实验材料,利用两性状动物模型、公母畜阈值模型,评估在WSSV感染情况... 详细信息

为开展凡纳对虾(Penaeus vannamei)生长和白斑综合征病毒(white spot syndrome virus,WSSV)抗性复合选育,本研究以凡纳对虾59个核心育种群家系1770尾77~94日龄的个体为实验材料,利用两性状动物模型、公母畜阈值模型,评估在WSSV感染情况下凡纳对虾体长、抗WSSV存活时间和家系WSSV半致死存活率的遗传力和遗传相关。结果显示,凡纳对虾体长、抗WSSV存活时间和家系WSSV半致死存活率遗传力估计值分别为0.17±0.05、0.18±0.05和0.14±0.05,均属于中等遗传力水平,且均与0差异极显著(P0.05);抗WSSV存活时间性状与家系WSSV半致死存活率性状的遗传相关系数为0.96±0.03,遗传相关与1差异不显著(P>0.05),为高度正相关。结果表明,在该育种群体中,凡纳对虾生长与WSSV抗性可根据育种需要,通过赋值制定综合选择指数,进行多性状复合选育。此外,为优化每代育种的操作过程,可选用家系WSSV半致死存活率作为WSSV抗性的指标性状。本研究为开展凡纳对虾生长和WSSV抗性优良品种的选育提供了基础数据和理论支撑。

关键词：凡纳对虾遗传参数生长存活 WSSV

Comparisons of Growth and Survival Performance Among Selected Families and Wild Populations of Fenneropenaeus chinensis

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Journal of Ocean University of China 2018年第2期17卷 407-412页

作者： LUO Kun KONG Jie MENG Xianhong LUAN Sheng cao baoxiang CHEN Baolong Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology

In this study,families of selected population for growth(SP_BWT),selected population for white spot syndrome virus(WSSV)resistance(SP_RW),Bohai wild population(WP_BH)and Huanghai wild population(WP_HH)of *** were constructed through artificial insemination and with the standardized procedure of larvae *** and survival performance were studied among four populations after a 70 days common *** results showed that the maximum least square mean of body weight was 17.50 g in SP_BWT while the minimum was 13.03 g in WP_*** with WP_BH,body weight of SP_BWT increased by 23.41%(P0.05).Body weights of SP_BWT and SP_RW were significantly higher than that of WP_HH,which increased by 34.31%(P0.05)was *** growth performances were also observed among different families in each *** body weight of 798F family was the *** absolute growth rate(AGR)was 0.25 g d^(-1),150%higher than that of the lowest one,0.1 g d^(-1) in 807F *** rate of families among four populations was *** highest was 94.74%,and the lowest was 71.88%.

关键词： Fenneropenaeus chinensis growth survival rate selective breeding genetic gain wild population

Genetic parameter estimation for juvenile growth and upper thermal tolerance in turbot(Scophthalmus maximus Linnaeus)

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Acta Oceanologica Sinica 2014年第8期33卷 106-110页

作者： ZHANG Tianshi KONG Jie LIU Baosuo WANG Qingyin cao baoxiang LUAN Sheng WANG Weiji Key Laboratory for Sustainable Utilization of Marine Fisheries Resources Ministry of AgricultureYellow Sea Fisheries Research InstituteChinese Academy of Fishery Sciences College of Fisheries and Life Science Shanghai Ocean University

Twenty-six half-sib groups （53 full-sib families） of turbot,Scophthalmus maximus Linnaeus, were obtained by artificial insemination. We measured growth in the offspring （40-50 individuals/family） and subjected them to a thermal tolerance challenge over a period of 34 d. There was no significant difference in daily mor-tality （range： 0.580%-1.391%） between Days 1-13 during the thermal tolerance challenge. However, daily cumulative mortality increased rapidly between Days 14 and 29, especially on Days 15 and 16 （20.232% and 34.377%, respectively）. Mortality was highest on Day 16 （14.145%）. We estimated the genetic parameters using the average information restricted maximum likelihood method. We used a likelihood ratio test to evaluate the significance of effects in models with and without identity as an effect, and compared the final log-likelihoods （maximum log L）. Lastly, we estimated phenotypic and genetic correlation between the up-per thermal tolerance limit （UTT） and body weight （BW）. In this study, the positive phenotypic correlation was low between UTT and BW （0.093±0.029）. The genetic correlation between UTT and BW was negative （-0.044±0.239）. The heritability for upper thermal tolerance was low （0.087±0.032）, which is of approximate-ly moderate heritability. The heritability for body weight was high （0.303±0.074）. Our results suggest there is significant potential for improvement in the culture of turbot by selective breeding.

关键词： Scophthalmus maximus Linnaeus growth upper thermal tolerance genetic parameter

Heterosis and heritability estimates for the survival of the Pacific white shrimp(Litopenaeus vannamei) under the commercial scale ponds

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Acta Oceanologica Sinica 2017年第2期36卷 62-68页

作者： LU Xia LUAN Sheng cao baoxiang SUI Juan DAI Ping MENG Xianhong LUO Kun KONG Jie Key Laboratory of Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology

The aim of the present study is to detect the potential of the base population from diallel crosses of eight introduced strains of the Pacific white shrimp（Litopenaeus vannamei） for improving the yield. Heterosis and heritability were estimated for pond survival at commercial farm conditions for the base population that included 207 full-sib families from a nested mating design by artificial insemination. Among all the hybrids,the heterosis ranged from –11.37%（UA1×UA2） to 20.53%（UA3×SIN） with an average of 0.953%. The results showed that more than half of the hybrids（51.85%） have negative heterosis for survival rate, but most of the hybrids with positive heterosis have high estimates. The high proportion of negative heterosis for survival rate reminders us that the survival trait also should be considered in the crossbreeding program to avoid yield decrease. However, high positive heterosis manifested in most of the hybrids for survival indicates the usefulness of these hybrids for improving the survival to obtain higher yield by crossbreeding in this breeding program. The heritability estimate for pond survival was 0.092±0.043 when genetic groups were included in the pedigree, and it was significantly different from zero（P〈0.05）. The results from this study also indicated that significant improvement for survival is possible through selection in L. vannamei.

关键词： heterosis heritability genetic group pond survival Pacific white shrimp Litopenaeus vannamei

Influence of White Spot Syndrome Virus Infection on Hepatopancreas Gene Expression of ‘Huanghai No.2' Shrimp(Fenneropenaeus chinensis)

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Journal of Ocean University of China 2017年第5期16卷 863-872页

作者： MENG Xianhong SHI Xiaoli KONG Jie LUAN Sheng LUO Kun cao baoxiang LIU Ning LU Xia LI Xupeng DENG Kangyu cao Jiawang ZHANG Yingxue ZHANG Hengheng Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology

To elucidate the molecular response of shrimp hepatopancreas to white spot syndrome virus(WSSV) infection, microarray was applied to investigate the differentially expressed genes in the hepatopancreas of ‘Huanghai No. 2'(Fenneropenaeus chinensis). A total of 59137 unigenes were designed onto a custom-made 60 K Agilent chip. After infection, the gene expression profiles in the hepatopancreas of the shrimp with a lower viral load at early(48–96 h), peak(168–192 h) and late(264–288 h) infection phases were analyzed. Of 18704 differentially expressed genes, 6412 were annotated. In total, 5453 differentially expressed genes(1916 annotated) expressed at all three phases, and most of the annotated were either up-or down-regulated continuously. These genes function diversely in, for example, immune response, cytoskeletal system, signal transduction, stress resistance, protein synthesis and processing, metabolism among others. Some of the immune-related genes, including antilipopolysaccharide factor, Kazal-type proteinase inhibitor, C-type lectin and serine protease encoding genes, were up-regulated after WSSV infection. These genes have been reported to be involved in the anti-WSSV responses. The expression of genes related to the cytoskeletal system, including β-actin and myosin but without tubulin genes, were down-regulated after WSSV infection. Astakine was found for the first time in the WSSV-infected F. chinensis. To further confirm the expression of differentially expressed genes, quantitative real-time PCR was performed to test the expression of eight randomly selected genes and verified the reliability and accuracy of the microarray expression analysis. The data will provide valuable information to understanding the immune mechanism of shrimp's response to WSSV.

关键词：白斑综合征病毒基因表达谱病毒感染肝胰脏明虾黄海 WSSV感染差异表达基因

Genetic Parameter Estimation of Reproductive Traits of Litopenaeus vannamei

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Journal of Ocean University of China 2017年第1期16卷 161-167页

作者： TAN Jian KONG Jie cao baoxiang LUO Kun LIU Ning MENG Xianhong XU Shengyu GUO Zhaojia CHEN Guoliang LUAN Sheng Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdao 266071P.R.China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237P.R.China Hebei Xinhai Aquatic Biotechnology Co. Ltd.Huanghua 061101P.R.China Zhanjiang Haimao Aquatic Biological Technology Co. Ltd.Zhanjiang 524000P.R.China

In this study, the heritability, repeatability, phenotypic correlation, and genetic correlation of the reproductive and growth traits of L. vannamei were investigated and estimated. Eight traits of 385 shrimps from forty-two families, including the number of eggs(EN), number of nauplii(NN), egg diameter(ED), spawning frequency(SF), spawning success(SS), female body weight(BW) and body length(BL) at insemination, and condition factor(K), were measured,. A total of 519 spawning records including multiple spawning and 91 no spawning records were collected. The genetic parameters were estimated using an animal model, a multinomial logit model(for SF), and a sire-dam and probit model(for SS). Because there were repeated records, permanent environmental effects were included in the models. The heritability estimates for BW, BL, EN, NN, ED, SF, SS, and K were 0.49 ± 0.14, 0.51 ± 0.14, 0.12 ± 0.08, 0, 0.01 ± 0.04, 0.06 ± 0.06, 0.18 ± 0.07, and 0.10 ± 0.06, respectively. The genetic correlation was 0.99 ± 0.01 between BW and BL, 0.90 ± 0.19 between BW and EN, 0.22 ± 0.97 between BW and ED,-0.77 ± 1.14 between EN and ED, and-0.27 ± 0.36 between BW and K. The heritability of EN estimated without a covariate was 0.12 ± 0.08, and the genetic correlation was 0.90 ± 0.19 between BW and EN, indicating that improving BW may be used in selection programs to genetically improve the reproductive output of L. vannamei during the breeding. For EN, the data were also analyzed using body weight as a covariate(EN-2). The heritability of EN-2 was 0.03 ± 0.05, indicating that it is difficult to improve the reproductive output by genetic improvement. Furthermore, excessive pursuit of this selection is often at the expense of growth speed. Therefore, the selection of high-performance spawners using BW and SS may be an important strategy to improve nauplii production.

关键词： L.vannamei Reproductive Growth trait Heritability Genetic correlation

Reducing the Common Environmental Effect on Litopenaeus vannamei Body Weight by Rearing Communally at Early Developmental Stages and Using a Reconstructed Pedigree

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Journal of Ocean University of China 2020年第4期19卷 923-930页

作者： KONG Zhangwei KONG Jie HAO Dongchun LU Xia JIAN Tan MENG Xianhong LUO Kun cao baoxiang SUI Juan LI Xupeng LUAN Sheng Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdao 266071China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266235China Fisheries College Ocean University of ChinaQingdao 266003China

Heritability estimates may be severely biased when a large common environmental effect on a family arises from a longlasting separate rearing at early stages(SRES)in traditional selective breeding programs,especially when bred populations have weak genetic *** rearing at early stages(CRES)may reduce common environmental effect since all families are reared in the same environment immediately after ***,we compared the effects of CRES and SRES strategies on genetic parameter estimation for harvest body weight in a selective breeding population of Litopenaeus vannamei with a small number of half-sib *** parameters of each strategy were estimated by using animal models excluding and including the common environmental effect(Model 1 and Model 2,respectively).Heritability estimates for body weight were 0.21±0.06(P0.05)in Model *** ratio of common environmental variance to phenotypic variance was 0.002±0.000 and 0.071±0.112 for CRES and SRES,*** strategy precisely partitioned the common environmental variance according to likelihood ratio *** heritability for body weight in CRES than in SRES implied that a large common environmental variance was confounded with additive genetic variance and was not effectively partitioned in ***,genetic correlation of body weight between the two strategies was 0.75±0.15,indicating that family rankings truly *** CRES should be followed in the selective breeding program of shrimp,especially in a population with a shallow pedigree and weak genetic ties between families.

关键词： common environmental effect heritability Litopenaeus vannamei parentage assignment

SCP-Trust Reasoning Strategy Based on Preference and Its Service Composition Process of Context-Aware Process

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Journal of Computer and Communications 2014年第9期2卷 38-45页

作者： Xiaona Xia Jiguo Yu baoxiang cao School of Computer Science Qufu Normal University Rizhao China

Before providing services to the user, user preference considerations are the key conditions to achieve the self-adaptive decision-making about service selection and composition process, which is the flexible concerned aspect provided by massive cloud computing environment data. Meanwhile, during the whole services’ providing process, achieving the capturing and forming of service aggregation units’ topology logic, building the context environment’s process-aware of service composition, ensuring the trust and adaptation among service aggregation units, which are the important reasons to express timely requirement preference. This paper designs SCP-Trust Reasoning strategy about the integration of user preference and trust, with process algebra, it is to achieve the context process-aware logic for service composition process, in order to improve the autonomous optimization and evolution of service implementation system.

关键词： Preferences Trust Reasoning Context-Aware Process Service Composition Service Aggregation Unit

Zeros of Complete Symmetric Polynomials over Finite Fields

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Journal of Systems Science & Complexity 2024年第4期37卷 1772-1788页

作者： cao Wei School of Mathematics and Statistics Minnan Normal UniversityZhangzhou 363000China

Wan and Zhang(2021) obtained a nontrivial lower bound for the number of zeros of complete symmetric polynomials over finite fields,and proposed a problem whether their bound can be *** this paper,the author improves Wan-Zhang's bound from three *** proposed results are based on the estimates related to the number of certain permutations and the value sets of non-permutation polynomials associated to the complete symmetric *** the author believes that there are still possibilities to improve the bounds and hence Wan-Zhang's bound.

关键词： Complete symmetric polynomial finite field permutation polynomial value set