麦哲伦扇贝形态性状与体质量相关性及通径分析

doi:10.16378/j.cnki.1003-1111.21244

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Abstract In order to research the effects of morphological traits on body weight and other economic traits of scallop Placopecten magellanicus and obtain a target population with good genetic traits, correlation analysis and path analysis were used to study the impact of shell length (L), shell height (h), and shell width (b) on the the living body weight (m₁), soft part weight (m₂) and adductor weight (m₃). The regression equation of morphological traits on body weight was established. The results showed that the correlation among all traits were extremely significant and positive (P<0.01). The correlation coefficient between shell length and width was the highest (0.977), and the correlation coefficient between shell width and height was the lowest (0.852). The results of path analysis showed that shell width was the main factor affecting the living body weight, soft part weight and adductor weight of scallop, with the path coefficients of 0.536 in living body weight, 0.387 in soft part weight and 0.435 in adductor weight. Shell length had the largest indirect effect on living body weight and adductor weight of scallop (0.869 and 0.702). Shell height had the greatest indirect effect on soft part weight (0.776). Shell width had the largest determining coefficient on living body weight and adductor weight (0.287 and 0.189), and shell height had the largest determining coefficient on the soft part weight (0.208). Stepwise regression method was used to establish the regression formula of morphological traits to living body weight, soft part weight and adductor weight: m₁=-365.655+2.596h+7.861b, m₂=-85.012+0.654L+1.428b, and m₃=-32.944+0.619b, the regression relationship being very significant level (P<0.01). The finding provided a reference for artificial breeding of P. magellanicus.

Key words： Placopecten magellanicus morphological trait body weight correlation coefficient path analysis

Received: 26 November 2021

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	YU Di
	CHEN Wei
	TENG Weiming
	XIE Xi
	YU Zuoan
	LI Dacheng
	WANG Chong
	WANG Qingzhi

Cite this article:

YU Di,CHEN Wei,TENG Weiming, et al. Correlation and Path Analysis between Morphological Traits and Body Weight of Scallop Placopecten magellanicus[J]. Fisheries Science, 2023, 42(3): 496-501.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.21244 OR https://www.shchkx.com/EN/Y2023/V42/I3/496

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