| 摘要: |
| 采用群体选育方法构建了海南、深圳和福建3个卵形鲳鳞(Tachinotus oratus)选育群体，对选育群体的生长特性和变异程度进行了分析.结果显示，经过人工选择后，各群体生长速度均较对照组有显著提高，海南、深圳、福建群体的特定生长率分别比对照组提高24.06%、7.19%和24.84%;福建群体的绝对增重率和特定生长率比海南群体分别高0.23 g/d和2.79%,比深圳群体分别高0.49 g/d和9.41%.在生长早期(2月龄),福建群体体重变异程度最大，深圳群体次之，海南群体变异相对较平稳；群体间变异程度相近时(6月龄),海南群体内的体重分布范围较广(200~600g),而福建群体的体重分布较为集中，体重在450~500g之间的个体占43.33%.研究表明，福建群体比海南群体和深圳群体具有更好的生长优势，可做进一步选育。 |
| 关键词: 海洋生物学 卵形竭缪 选育群体 生长性状 |
| DOI： |
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| 基金项目:中国水产科学研究院基本科研业务费资助项目(2012A0401,2013A0501) |
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| Comparison for the growth of three selective groupsof Trachinotus ovatus under the same culture conditions |
| 0U Youjun,JI Lei,LI Jiaer,FAN Chunyan,WANG Gang |
| (Key Laboratory for Exploitation &Utilization of Marine Fisheries Resource in South China Sea,Ministry of Agriculture,South China Fisheries Research Institute,CAFS,Guanghou 510300,China;College of Fisheries and Life,Shanghai Ocean University,Shanghai 201306,China) |
| Abstract: |
| Three selective groups ofTrachinotus ovatus which were collected fomm Hainan,Shenzhen and Fujian,re-spectively,had been constructed by population selective breeding and their growth trait and variation were ana-lyzed.The results showed that growth rate in each group was significantly higher than that of control group aftermultiple selection.The specifie growth rates in Hainan,Shenzhen,Fujian group were 24.06%,7.19%and 24.84%,and they wereall higher than the control group.The absolute growth rate and specific growth rate in Fu-jian group were 0.23 g/d and 2.79%which were higher than that of Hainan group,respectively,and 0.49 g/d and 9.41%higher than that of Shenzhen group.In the earlier stage,the maximum weight variation was found inFujian group,followed by Shenzhen group,and that Haiman group was the minimum.With same weight vanation(November,2009),the distribution range of weight in Hainan group was wider(200~600 g),and that of Fujiangroup was concentrate as 43.33%of the later were weighted between 450 g and 500 g.It could beconcluded thatthe Fujian group had a greater growth advantage than Haiman and Shenzhen group.Thus,it can be a good candi-date for further selections. |
| Key words: marine biology Trachinotus ovatus selective gmoup growth performance |
