池塘养殖海蜇生长性状相关性及通径分析

doi:10.16378/j.cnki.1003-1111.24206

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Abstract To investigate the relationship between body weight and morphological traits in jellyfish Rhopilema esculentum, body weight (y), umbrella arc length (x₁), body height (x₂), and oral arm length (x₃) were measured in 367 samples collected from the same batch in the aquaculture ponds (9.2 hm²) of Huangtukan Farm in Dandong city, Liaoning province, and a regression equation between morphological traits and body weight was established by correlation and path analyses. The results showed that body weight exhibited the maximal coefficient of variation (28.72%), showing the most selective potential. All pairwise correlations among four growth traits were significantly positive (P<0.01), with the maximal correlation (0.939) between body weight and umbrella arc length. Among the three morphological traits, the maximal determination coefficient (0.362) and direct path coefficient (0.602) on body weight were found to be the umbrella arc length, the predominant morphological trait affecting body weight. A multiple regression model was established with body weight (y) as the dependent variable and umbrella arc length (x₁), body height (x₂), and oral arm length (x₃) as independent variables: y=-8.322+0.194x₁+0.120x₂+0.093x₃ (r²=0.916). The multiple regression model exhibited better fitting effect and explanatory power, which can be applied in practical production. These findings provide critical theoretical guidance for selective breeding of superior varieties in the jellyfish.

Key words： pond aquaculture Rhopilema esculentum growth trait correlation analysis path analysis

Received: 13 December 2024

PACS:

S968.9

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	Articles by authors
	CHEN Bailing
	ZUO Huinan
	ZHOU Zunchun
	LI Yulong
	WANG Shengxin
	JIN Chenglong
	TIAN Meilin
	BAO Xiangbo
	LI Yunfeng

Cite this article:

CHEN Bailing,ZUO Huinan,ZHOU Zunchun, et al. Correlation and Path Analysis of Growth Traits of Jellyfish Rhopilema esculentum in a Pond Culture[J]. Fisheries Science, 2025, 44(5): 767-773.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.24206 OR https://www.shchkx.com/EN/Y2025/V44/I5/767

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