Evaluation of growth performance in Litopenaeus vannamei populations introduced from other nations

Q4 Environmental Science

水产学报 Pub Date : 2013-01-01 DOI:10.3724/SP.J.1231.2013.38268

Ru Xiaohong, Luo Kun, Luan Sheng, Kong Jie, Xu Shengyu, Chen Rongjian, Chen Guoliang

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引用次数: 10

Abstract

In 2011,seven batches of Litopenaeus vannamei,introduced from America and Singapore were collected to evaluate the growth performance.The nest design was adopted and 130 full-sib families(17 hybridized combinations and 7 inbred combinations)were obtained by artificial insemination.Offspring of the 130 families were cultured separately through the larval and juvenile stages,and were fluorescence-tagged when they reached a body length of 3 cm.The shrimps were tagged with a unique family code by injecting different colours of "Visible Implant Fluorescent Elastomers"(VIE)before being stocked in one grow-out pond.All families were randomly divided into two groups and then cultured in both Huanghua,Hebei and Aoshan,Qingdao,simultaneously.Body weight(g)of these shrimps was measured after 153 d.Growth performance of every population and combination was evaluated by analyzing the least squares means(LSM)and heterosis for body weight in L.vannamei.The results showed that,on the 153rd day,the variation coefficient of body weight of the L.vannamei stocks was 13%-26%.The LSM for body weight of the UA5 batch,UA4 batch and SIN batch were higher than average by 5.34%,2.51% and 1.67%,respectively.So these 3 batches could be used as parents for high quality cultivars.A growth performance analysis showed the average LSM of hybridized combination(18.14 g)was higher than the average LSM of inbred combinations(17.17 g).The highest LSM occurred in the cross between the UA4 batch and the UA5 batch,with 7.61 percent higher than average.Heterosis analysis showed,they ranged from a low of-1.77% to a high of 11.72%,with a mean of 5.45%,positive heterotic vigor was detected in most hybridized combination.The highest heterosis occurred in the cross between the UA1 batch and the UA2 batch.Our study provides insight into methods for improving the accuracy of genetic selection for growth traits in L.vannamei,and for genetics and breeding research into quantitative traits in other aquatic animals.

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国外引进凡纳滨对虾种群生长性能评价

2011年，采集美国和新加坡引进的7批凡纳滨对虾进行生长性能评价。采用巢设计，人工授精获得全同胞家族130个(17个杂交组合和7个自交系)。将130科的幼鱼分别培养至幼虫期和幼鱼期，体长达到3cm时进行荧光标记。这些虾在放入一个生长池之前，通过注射不同颜色的“可见植入荧光弹性体”(VIE)来标记独特的家族代码。所有科随机分为两组，分别在河北黄骅和青岛敖山同时培养。153 d后测定各组对虾的体重(g)，利用最小二乘法(LSM)和体重杂种优势对各种群和组合的生长性能进行评价。结果表明，第153 d各组对虾的体重变异系数为13% ~ 26%。UA5批次、UA4批次和SIN批次的体重LSM分别比平均值高5.34%、2.51%和1.67%。因此，这3个批次可以作为优质品种的亲本。杂交组合的平均LSM (18.14 g)高于自交系组合的平均LSM (17.17 g)，其中UA4批次与UA5批次杂交的LSM最高，高出平均值7.61%。杂种优势分析结果表明，杂种优势组合最低为1.77%，最高为11.72%，平均为5.45%，多数杂种优势组合均为正优势。杂种优势表现在UA1与UA2杂交中。本研究为提高凡纳梅生长性状遗传选择的准确性，以及其他水生动物数量性状的遗传育种研究提供了新的思路。

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来源期刊

水产学报 Environmental Science-Management, Monitoring, Policy and Law

CiteScore

1.40

自引率

0.00%

发文量

5213

期刊介绍： "Fisheries of" mainly reflects the results of scientific research and development of the direction of aquaculture for domestic and foreign academic exchanges Fisheries Service. Mainly basic research published in Fisheries, aquaculture and proliferation of fishing waters environmental protection, preservation of aquatic products processing and utilization, fishing equipment, and other aspects of mechanical papers, research briefings and reviewed.