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Heritability and genetic correlation of survival in turbot (Scophthalmus maximus)

文献类型: 外文期刊

作者: Wang Xin'an 1 ; Ma Aijun 1 ; Huang Zhihui 1 ; Zhou Zhou 1 ;

作者机构: 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst,Minist Agr, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Key Lab Sustainable Utilizat Marine Fisheries Res, Qingdao 266071, Peoples R China

关键词: Scophthalmus maximus L;survival;heritability;genetic correlation

期刊名称:CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY ( 影响因子:1.068; 五年影响因子:0.983 )

ISSN: 0254-4059

年卷期: 2010 年 28 卷 6 期

页码:

收录情况: SCI

摘要: We analyzed the survival data of the offspring from 21 sires and 42 dams of turbot The results show that the cumulative survival rates for turbot from 2 to 18 months range from 17 5% to 28 5%, main mortality occurred during months 2-5, and the highest survival rates of families were 97 9%, 98 8%, 994%, 997% during months 2-5, 5-6, 6-8, 8-11, and 11-18, respectively, and 995%, being 53 5%, 23 8%, 19 5%, 14 9%, and 13 2% higher, respectively than the mean values in each period In all periods the estimated heritabilities for survival were very low without significant difference from zero (P>0 05) (values ranged from 0 06 to 0 12), indicating low additive genetic effects The genetic correlations of survival among families in different periods were all positive but low in magnitude (values range from 0 03 to 0 31) Genetic correlations between long-term survival and other periods survival had negative values (-0 06 and -0 15) and three positive values (0 16, 0 12 and 0 14) Genetic correlations between survival and weight were all positive, except for survival at months 2-5 and weight at 18 months, which was not significantly negative (-0 18)

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