| 摘要: |
| 探究影响水产养殖动物体质量的关键生物学表型性状组合,进而揭示其体质量增长对策,对指导水产养殖动物的种质甄别与科学养殖具重要现实意义。随机选取象山西沪港海域板式网箱内养殖3个月的褐菖鲉幼鱼同生群个体60尾为研究对象,以全长(X1)、体长(X2)、体宽(X3)、体高(X4)、头宽(X5)、侧线长(X6)、尾柄高(X7)、体质量(BW)、净体质量(NW)、内脏质量(W1)、肠质量(W2)、肝质量(W3)、胃质量(W4)、鳃质量(W5)、心质量(W6)为生物学测定指标,采用多元分析方法定量研究了体尺性状和称量性状对体质量的影响效应。结果表明:(1)经统计,所涉称量性状测定值较体尺性状更显离散,两者变异系数的波动范围分别为38.27%~89.86%和13.86%~17.78%,排序分别为W4>W1>W6>W2>W5>W3>NW>BW和X3>X4>X6>X5>X2>X7>X1;经计算,消化脏器与内脏间的质量比呈W3>W4>W2 (P<0.05);(2)相关分析显示,所涉体尺性状和称量性状均与BW呈极显著相关(P<0.01),两者相关系数波动范围分别为0.414~0.990和0.899~0.961,排序分别为NW>W3>W1>W6>W5>W2>W4和X1>X4>X2>X5>X6>X3>X7;(3)经通径分析,被保留的称量性状组合和体尺性状组合的直接作用排序分别为NW>W3>W2>W4>W6和X4>X5>X6>X7;经决定程度分析和复相关分析,称量性状组合对BW的总决定系数和复相关指数均为0.989,体尺性状组合则均为0.961;(4)经偏回归分析,分别获得了基于称量性状组合和体尺性状组合的BW估算方程。研究结果可为褐菖鲉速生型种质遴选与科学养殖提供参考。 |
| 关键词: 褐菖鲉幼鱼 体质量 体尺性状 称量性状 多元分析 |
| DOI：10.11693/hyhz20220400095 |
| 分类号:Q789;S965;Q954 |
| 基金项目:宁波市重大科技任务攻关项目,2022Z183号;国家海洋公益专项,201405029号;宁波市本级增殖放流技术指导和效果评价,2015-2021;象山港海洋牧场示范区五期建设项目环境监测及功效调查评估,2017-2018。 |
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| EFFECTS OF BIOLOGICAL PHENOTYPES ON BODY WEIGHT IN JUVENILES OF SEA RUFFE (SEBASTISCUS MARMORATUS) |
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TENG Xian-Ya1, JIANG Hong-Lei2, LI You-Zhi1, SI Lie-Gang1,2, WANG Zhi-Zheng1
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1.School of Fisheries, Zhejiang Ocean University, Zhoushan 316022, China;2.Ningbo Ocean and Fishery Research Institute, Ningbo 315048, China
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| Abstract: |
| The growth strategy of aquaculture animals depends not only on their germplasm specificity but also closely related to their aquaculture mode and growing environment. Exploring the combination of critical biological phenotypic traits affecting the body weight of aquaculture animals and then revealing the countermeasures for the growth of body weight has important practical significance for guiding the germplasm screening and scientific aquaculture of aquatic animals. 60 juveniles of sea ruffe (Sebastiscus marmoratus) from the same congenital group that had been cultured for three months in plate cages in the Xihu-port sea area of Xiangshan were randomly selected as the research objects. The total length (X1), body length (X2), body width (X3), body height (X4), head width (X5), lateral line length (X6), caudal peduncle depth (X7), body weight (BW), net body weight (NW), visceral weight (W1), intestinal weight (W2), liver weight (W3), stomach weight (W4), gill weight (W5), and heart weight (W6) were used as biological indicators. The multivariate analysis method was used to quantitatively study the effects of body size traits and weighing traits. The results showed that:(1) According to statistics, the measured values of the weighing traits were more discrete than those of the body size traits; the fluctuation ranges of the coefficients of variation of both were 38.27%~89.86% and 13.86%~17.78%, respectively, of which the ranking were W4>W1>W6>W2>W5>W3>NW>BW and X3>X4>X6>X5>X2>X7>X1, respectively; by calculation, the ratio of weight between digestive organs and internal organs presented W3>W4>W2 (P<0.05); (2) Correlation analysis showed that both the body size traits and weighing traits were extremely significantly correlated with BW (P<0.01), and their correlation coefficients fluctuated in the range of 0.414 to 0.990 and 0.899 to 0.961, respectively; the rank of both were NW>W3>W1>W6>W5>W2>W4 and X1>X4>X2>X5>X6>X3>X7, respectively; (3) By the path analysis, the direct action sorts between the retained weighing trait combination and body size trait combination were NW>W3>W2>W4>W6 and X4>X5>X6>X7; through determination degree analysis and multiple correlation analysis, the total determination coefficient and multi-correlation coefficient of weighing trait combination on BW were both 0.989, while for the combination of body size traits, the value were both 0.961. (4) By partial regression analysis, the BW estimation equations based on weighing traits and body size traits were obtained respectively. The research results could provide a practical reference for selecting the fast-growing germplasm and scientific aquaculture of S. marmoratus. |
| Key words: juveniles of sea ruffe body weight body size traits weighing traits multivariate analysis |
