两种扇贝杂交和自交子一代生长性状的比较

doi:10.16378/j.cnki.1003-1111.20233

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Abstract Four experimental combinations were set up with Yesso scallop Patinopecten yessoensis and Farrer′s scallop Chlamys farreri as materials: P. yessoensis ♀ × C. farreri ♂ (PC), C. farreri ♀× P. yessoensis ♂ (CP), P. yessoensis ♀ × P. yessoensis ♂ (PP) and C. farreri ♀ × C. farreri ♂ (CC). The fertilization rate, hatching rate, growth and survival rate, attachment metamorphosis rate and seedling survival rate were analyzed. The results showed that the fertilization rate and hatching rate of the four combinations were above 97% and 89%, without significant difference among the four combinations. The average daily growth and eye-spot larva size of CP combination were 9.03% and 3.74% higher than that of CC combination, while that of PC combination was 5.02% and 4.32% higher than that of PP combination, respectively. There was no significant difference in the survival rate of larvae among the four combinations; there was no significant difference in the attachment metamorphosis rate among the four combinations, but the seedling survival rate of PC combination in sea was 5.13 percentage points higher than that of PP combination. The growth rate and monthly increment of CP combination were 7.41% and 7.45% higher than those of CC, respectively; the growth rate and monthly increment of PC combination were 17.37% and 17.36% higher than those of PP, respectively. The survival rates of CP and PC were 5.85 and 18.41 percentage points higher than those of CC and PP, respectively. Comprehensive comparison showed that the hybrid combination had certain heterosis in growth and survival compared with self-cross combination, and PC combination had obvious heterosis, was suitable for large-scale industrialization.

Key words： Patinopecten yessoensis Chlamys farreri hybridization growth survival

Received: 19 October 2020

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	Articles by authors
	CHEN Yang
	ZHAO Chunnuan
	CAI Zhongqiang
	WANG Xiaomei
	ZHENG Yanxin
	YU Tao

Cite this article:

CHEN Yang,ZHAO Chunnuan,CAI Zhongqiang, et al. Comparison of Growth Traits between Hybridized Combinations and Self-Fertilize Combinations of Two Species of Scallop[J]. Fisheries Science, 2022, 41(4): 556-563.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.20233 OR https://www.shchkx.com/EN/Y2022/V41/I4/556

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