| 不同生长阶段花鲈生长性状与体质量的相关性 |
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| 引用本文： | 雍许坤,邱丽华,李勇,闫路路,范嗣刚,赵超,刘勇,黄皓,王鹏飞.不同生长阶段花鲈生长性状与体质量的相关性[J].南方农业学报,2022,53(1):248-256. |
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| 作者姓名： | 雍许坤 邱丽华 李勇 闫路路 范嗣刚 赵超 刘勇 黄皓 王鹏飞 |
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| 作者单位： | 1 大连海洋大学水产与生命学院, 辽宁大连 116000;2 中国水产科学研究院南海水产研究所/农业农村部南海渔业资源开发利用重点实验室, 广州 510300;3 珠海市现代农业发展中心, 广东珠海 519000;4 上海海洋大学水产与生命学院, 上海 201306 |
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| 基金项目： | 广东省重点领域研发计划项目;中国水产科学研究院基本科研业务费专项;农业农村部财政专项 |
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| 摘 要： | 【目的】筛选出花鲈（Lateolabrax maculatus）各生长阶段对体质量有显著影响的主要生长性状，为开展花鲈选育工作时不同阶段应采取何种筛选标准提供理论依据。【方法】采用室外池塘养殖模式对花鲈（平均体质量12.29~599.33 g）开展为期250 d的养殖试验，每隔50 d随机采样测量其表型性状，包括体质量、全长、体长、眼径、头高、头长、上颌长、躯干长、尾鳍长、体高、尾长、尾柄高和吻长，并对不同生长阶段的表型性状进行相关分析、通径分析和多元回归分析，以及构建多元回归方程。【结果】在测定的13项花鲈表型性状中，除吻长外，其余性状均随养殖时间的延长而呈增长趋势。其中，花鲈的体质量从12.29±2.87 g增长至599.33±116.50 g，体长由86.73±7.75 mm增长至328.12±21.10mm。花鲈体质量和体长的变异系数波动变化均不明显，分别为19.44%~24.74%和6.43%~9.09%。不同生长阶段与花鲈体质量相关性达显著或极显著水平的生长性状分别是:养殖第1 d为全长；养殖第50 d为体长、头高和吻长；养殖第100 d为体长和体高；养殖第150 d为体长、眼径、上颌长和体高；养殖第200 d为体长、躯干长和体高；养殖第250 d为体长和头高。通径分析结果表明，养殖第1 d以全长对花鲈体质量的直接作用最大（通径系数为0.894）；养殖第50 d、第100 d、第150 d和第250 d均以体长对花鲈体质量的直接作用最大，通径系数分别为0.531、0.663、0.403和0.686；养殖第200 d则以体高对花鲈体质量的直接作用最大（通径系数为0.511）。【结论】在不同生长阶段与花鲈体质量显著或极显著相关的生长性状也各不相同。花鲈平均体质量为12.29 g时全长与体质量的相关性最大，平均体质量在70.25~599.33 g时体长与体质量的相关性较大；花鲈的体质量还与其体高和头高有相关性。因此，在花鲈选育过程中建议以体长为主要选育性状，同时辅以体高、全长和头高。
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| 关 键 词： | 花鲈 生长性状 体质量 相关分析 通径分析 多元回归方程 |
| 收稿时间： | 2021-07-16 |
Correlation of growth traits and body mass of spotted sea bass (Lateolabrax maculatus)in different growth stages |
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| YONG Xu-kun,QIU Li-hua,LI Yong,YAN Lu-lu,FAN Si-gang,ZHAO Chao,LIU Yong,HUANG Hao,WANG Peng-fei.Correlation of growth traits and body mass of spotted sea bass (Lateolabrax maculatus)in different growth stages[J].Journal of Southern Agriculture,2022,53(1):248-256. |
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| Authors: | YONG Xu-kun QIU Li-hua LI Yong YAN Lu-lu FAN Si-gang ZHAO Chao LIU Yong HUANG Hao WANG Peng-fei |
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| Affiliation: | 1 College of Fisheries and Life Science, Dalian Ocean University, Dalian, Liaoning 116000, China;2 South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences/Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture and Rural Sciences, Guangzhou 510300, China;3 Zhuhai Modern Agriculture Development Center, Zhuhai, Guangdong 519000, China;4 College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China |
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| Abstract: | 【Objective】The aim of this study was to investigate the effects of different growth traits on body weight of Lateolabrax maculatus and provide theoretical support for the selection and breeding standards of different stages in L.maculatus.【Method】The culture experiment was conducted on L.maculatus（average body mass:15.02-599.33 g）using outdoor ponds culture pattern and cultured for about 250 d. Growth traits（including body mass，total length，body length，interorbital diameter，head depth，head length，maxillary length，trunk length，caudal fin length，body depth， tail length，caudal peduncle depth and snout length）were measured every 50 d. The data of growth traits in different growth stages of L.maculatus were analyzed by correlation analysis，path analysis and multiple regression analysis，multiple regression equations were constructed.【Result】Among the 13 growth traits measured，except for snout length， showed an increasing trend with increasing rearing time. Among them，the body mass of the L.maculatus increased from 12.29±2.87 g to 599.33±116.50 g，the body length of the L.maculatus increased from 86.73±7.75 mm to 328.12±21.10 mm. The coefficient of variation fluctuations of body mass and body length of L.maculatus were not greatly changed， ranging from 19.44% to 24.74% and 6.43% to 9.09%，respectively. The growth traits that had significant or extremely significant effects on body weight at different growth stages of L.maculatus were as follows:full length at the first day； body length，head height，and snout length at the 50th day；the body length and body height at the 100th day；body length， body height，maxillary length and eye diameter at the 150th day；body height，body length and trunk length at the 200th day；body length and head height at the 250th day. The results of the path analysis showed that the greatest direct effect on the body mass of the L.maculatus on day 1 was the full length（path coefficient 0.894），the direct effect of body length on body mass was the greatest on days 50，100，150 and 250（path coefficients of 0.531，0.663，0.403 and 0.686，respectively），body height had the greatest direct effect on the body mass of L.maculatus on the 200th day（path coefficient 0.511）.【Conclusion】Growth traits that are significantly or extremely significantly associated with L.maculatus body mass vary across growth stages. The correlation between full length and body mass is the greatest when the mean body mass of the L.maculatus reaches 12.29 g. The correlation between body length and body mass is greater when the body mass of the L.maculatus is in the range of 70.25-599.33 g，and body mass is also correlated with head height and body height. Therefore，body length is the main selection trait in the selection and breeding process of L.maculatus，body height，full length and head height are used as auxiliary. |
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