Yield trait improvement of bay scallops following complete diallel crosses between different scallop stocks

IOCAS-IR

	Yield trait improvement of bay scallops following complete diallel crosses between different scallop stocks
	Zhang SD(张守都); Li L(李莉); Wu FC(吴富村); Zhang GF(张国范)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2014-01-15
出版年	2014
卷号	v.32 期号:01 页码:3-9
文献类型	CNKI期刊论文
摘要	This study describes the complete diallel hybridization between newly introduced bay scallop stock(W) from Canada and local commercial stock(D) grown under laboratory conditions, in China. Larval survival and growth during all life stages(larvae, spat, and adult) were compared among hybrid(DW, WD) and purebred(DD, WW) populations. Signifi cant heterosis was detected for survival during the larval stage(>1% of the mid-parent values). The mean heterosis( H m) varied in growth throughout the life span. More than 50% of the H m values were positive and negative in the DW and WD groups, respectively. The infl uence of maternal effects and mating types(intrapopulation vs. interpopulation crosses) on growth for all life stages was not consistent. Larval survival did not differ signifi cantly( P >0.05) with maternal effect or mating type. In the harvest stage, shell length(SL), shell height(SH), shell width(SW), and total weight(TW) were larger in the hybrid compared with the inbred groups. Positive H m values were observed in SL(1.5%), SW(5.8%), and TW(12.3%), and were more signifi cant in the DW groups(6.1%, 4.5%, 6.8%, and 27.2%). These results suggest that hybridization between two geographic populations is a good tool for improving bay scallop growth. However, unstable heterosis between the two populations requires further study.
关键词	bay scallop hybridization growth heterosis
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S917.4
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National High Technology Research and Development Program of China(863 Program)(Nos.2012AA10A410,2010AA10A401) ; the National Natural Science Foundation of China(No.30800842) ; the Mollusc Research and Development Center(No.CARS-48) ; the Taishan Scholar Program of Shandong Province ; the Climbing Program of Taishan Scholars of Shandong Province
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190596
专题	中国科学院海洋研究所
作者单位	InstituteofOceanology,ChineseAcademyofSciences
推荐引用方式 GB/T 7714	Zhang SD,Li L,Wu FC,et al. Yield trait improvement of bay scallops following complete diallel crosses between different scallop stocks. 2014.