Artificial interspecific backcrosses between the hybrid of female Crassostrea hongkongensis x male C-gigas and the two parental species

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	Artificial interspecific backcrosses between the hybrid of female Crassostrea hongkongensis x male C-gigas and the two parental species
	Zhang, Yuehuan; Zhang, Yang; Li, Jun; Xiao, Shu; Xiang, Zhiming; Wang, Zhaoping; Yan, Xiwu; Yu, Ziniu
刊名	AQUACULTURE
	2016
卷号	450 页码:95-101
关键词	Crassostrea hongkongensis C. gigas Interspecific backcrosses Phenotypic trait Fertility restoration Parentage identification
通讯作者	Yu, ZN (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China.
中文摘要	To explore the possibility of performance improvement in the hybrids of Crassostrea hongkongensis female x Crassostrea gigas male, backcross progeny and F-2 hybrids were produced and evaluated. Three sets of replicates were successfully generated; each consisted of single crosses (HH, GG and HG), two female backcrosses between female hybrids and two male pure species (Hg/H and Hg/G), two male backcrosses between male hybrids and two female parents (H/Hg and G/Hg) and F-2 hybrids (Hg/Hg). Fertilization, survival, growth and gonad development of these experimental groups were evaluated. All backcross groups exhibited high fertilization levels; however, the female backcrosses (Hg/H and Hg/G) and F-2 hybrids exhibited a low hatching rate. Survival and growth superiority of the backcross progeny was observed from the larval stage to the adult stage, although outbreeding depression of the F-2 hybrids occurred. Interestingly, all backcross progeny and F2 hybrids were fertile with functional gametes and normal sex ratios when fully matured. The genetic recombination of the backcross progeny and Mendel's genetic segregation of the F-2 hybrids were detected with the nuclear gene marker in the backcross. Our results revealed that artificial interspecific backcrosses are successful, and the backcross progeny are viable, fertile, and fast-growing, and therefore hold promise for potential utilization in aquaculture as a new oyster stock resource. Statement of relevance: All authors agree that the author list is correct in its content and order, and we have no conflict of interest to declare. (C) 2015 Elsevier B.V. All rights reserved.
学科主题	Fisheries; Marine & Freshwater Biology
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15538]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
推荐引用方式 GB/T 7714	Zhang, Yuehuan,Zhang, Yang,Li, Jun,et al. Artificial interspecific backcrosses between the hybrid of female Crassostrea hongkongensis x male C-gigas and the two parental species[J]. AQUACULTURE,2016,450:95-101.
APA	Zhang, Yuehuan.,Zhang, Yang.,Li, Jun.,Xiao, Shu.,Xiang, Zhiming.,...&Yu, Ziniu.(2016).Artificial interspecific backcrosses between the hybrid of female Crassostrea hongkongensis x male C-gigas and the two parental species.AQUACULTURE,450,95-101.
MLA	Zhang, Yuehuan,et al."Artificial interspecific backcrosses between the hybrid of female Crassostrea hongkongensis x male C-gigas and the two parental species".AQUACULTURE 450(2016):95-101.