| ZHANG Haibin,LIU Xiao,ZHANG Guofan,ZHANG Guizhen.Effects of effective population size on the F2 growth and survival of bay scallop Argopecten irradians irradians(Lamarck)[J].Acta Oceanologica Sinica,2005,(4):114-120 |
| Effects of effective population size on the F2 growth and survival of bay scallop Argopecten irradians irradians(Lamarck) |
| Effects of effective population size on the F2 growth and survival of bay scallop Argopecten irradians irradians(Lamarck) |
| 投稿时间：2005-04-11 修订日期：2005-06-07 |
| DOI： |
| 中文关键词: Argopecten irradians irradians effective population size inbreeding depression growth survival |
| 英文关键词:Argopecten irradians irradians effective population size inbreeding depression growth survival |
| 基金项目: |
| 作者 | 单位 | E-mail | | ZHANG Haibin | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Graduate School, Chinese Academy of Sciences, Beijing 100039, China | gfzhang@ms.qdio.ac.cn | | LIU Xiao | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | ZHANG Guofan | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | ZHANG Guizhen | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | |
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| 中文摘要: |
| In 2002,six cohorts ofbroodstock bay scallop Argopecten irradians irradians(Ne=l,2,10,30,50 and control) were randomly chosen from a population of bay scallop to produce offspring.After one year rearing,with the progeny matured,the similar experiment was done to produce the F2 generation.To determine the magnitude of Ne effects,the growth and survival rates in larvae and adult of six F2 groups were compared.Results showed that inbreeding depression existed not only in the Ne=1 group but also in the Ne=2 group.The growth and survival rates of the two groups were significantly lower than those of the other groups(Ne=10,30,50,control),and there were no significant differences among the latter(P>0.05).At the same time,the amount of depression in the Ne=l group was significantly higher than that of the Ne=2 group(P<0.05).These results indicated that the low effective population size(Ne),which increases the possibility of inbreeding,could lead to some harmful effects on the offspring.So it is essential to maintain a high level of Ne in commercial seed production.Furthermore,as the high fecundity of bay scallop might lead to increased inbreeding,selecting broodstock from different growout sites is recommended. |
| 英文摘要: |
| In 2002,six cohorts ofbroodstock bay scallop Argopecten irradians irradians(Ne=l,2,10,30,50 and control) were randomly chosen from a population of bay scallop to produce offspring.After one year rearing,with the progeny matured,the similar experiment was done to produce the F2 generation.To determine the magnitude of Ne effects,the growth and survival rates in larvae and adult of six F2 groups were compared.Results showed that inbreeding depression existed not only in the Ne=1 group but also in the Ne=2 group.The growth and survival rates of the two groups were significantly lower than those of the other groups(Ne=10,30,50,control),and there were no significant differences among the latter(P>0.05).At the same time,the amount of depression in the Ne=l group was significantly higher than that of the Ne=2 group(P<0.05).These results indicated that the low effective population size(Ne),which increases the possibility of inbreeding,could lead to some harmful effects on the offspring.So it is essential to maintain a high level of Ne in commercial seed production.Furthermore,as the high fecundity of bay scallop might lead to increased inbreeding,selecting broodstock from different growout sites is recommended. |
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