不同月龄大泷六线鱼形态性状与体质量的相关性及通径分析
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摘要
为了研究大泷六线鱼形态性状与体质量之间的关系,随机选取6月龄和18月龄大泷六线鱼各150尾,测量了体质量和8个形态性状,包括全长、体长、体高、体宽、头长、躯干长、尾柄长、尾柄高,运用相关分析、回归分析和通径分析的方法研究这8个形态性状与体质量的关系。结果表明:6月龄和18月龄大泷六线鱼的所有形态性状与体质量之间的相关系数均达到极显著水平(P <0. 01),不同月龄影响体质量的主要形态性状存在差异。采用逐步引入-剔除法进行多元回归分析,6月龄和18月龄大泷六线鱼分别筛选出体长、头长、体高、体宽,全长、体高、尾柄高、体宽各4个形态性状,并建立多元回归方程:Y=-13. 54+1. 905X_2+1. 222 X_3+1. 211X_4+1. 499X_5,Y=-173. 415+8. 85X_1+11. 18X_3+9. 65X_4+20. 749X_8。通径分析结果显示,6月龄和18月龄大泷六线鱼对体质量直接作用最大的形态性状分别为体长(0. 706)和全长(0. 538),其次分别为头长(0. 150)和体高(0. 188),说明体长和头长、全长和体高分别对6月龄和18月龄大泷六线鱼体质量具有决定作用。除了上述的形态性状外,还应结合体宽来进行选育。研究结果可为大泷六线鱼的形态性状在良种选育中的利用提供重要参考。
In order to research the relationship between the morphological traits and body mass of Hexagrammos otakii,150 tails of six-month and eighteen-month Hexagrammos otakii were randomly sampled for measuring body,mass and eight morphological traits including full length,body length,body height,body width,head length,trunk length,length of tail stalk,height of tail stalk,and correlation analysis,regression analysis and path analysis were used to study the eight morphological traits on the impact of the body mass. A significant positive correlation between morphological traits and body mass of six and eighteen months of Hexagrammos otakii were observed,with extreme significance( P < 0. 01),and the main morphological traits of body mass affected by different age of month were different. Six-month and eighteen-month Hexagrammos otakii were selected for the four morphological traits of body length,head length,body height,body width and full length,body height,height of tail stalk and body width by gradual introduction and gradual elimination method and the multiple regression equations were established: Y =-13. 54 + 1. 905X2+ 1. 222X3+1. 211X4+ 1. 499X5,Y =-173. 415 + 8. 85X1+ 11. 18X3+ 9. 65X4+ 20. 749X8. The results of path analysis showed that the morphological traits with the greatest direct effect on body mass of the 6-month-old and 18-month-old greenling were body length( 0. 706) and full length( 0. 538),respectively,and body length,head length,full length and body height had a decisive effect on the body mass of greenling at 6 months and18 months. In addition to the morphological traits of the above,it should be combined with body width for breeding. The results of the study could provide important reference for the use of the morphological traits of Hexagrammos otakii for breeding.
In order to research the relationship between the morphological traits and body mass of Hexagrammos otakii,150 tails of six-month and eighteen-month Hexagrammos otakii were randomly sampled for measuring body,mass and eight morphological traits including full length,body length,body height,body width,head length,trunk length,length of tail stalk,height of tail stalk,and correlation analysis,regression analysis and path analysis were used to study the eight morphological traits on the impact of the body mass. A significant positive correlation between morphological traits and body mass of six and eighteen months of Hexagrammos otakii were observed,with extreme significance( P < 0. 01),and the main morphological traits of body mass affected by different age of month were different. Six-month and eighteen-month Hexagrammos otakii were selected for the four morphological traits of body length,head length,body height,body width and full length,body height,height of tail stalk and body width by gradual introduction and gradual elimination method and the multiple regression equations were established: Y =-13. 54 + 1. 905X2+ 1. 222X3+1. 211X4+ 1. 499X5,Y =-173. 415 + 8. 85X1+ 11. 18X3+ 9. 65X4+ 20. 749X8. The results of path analysis showed that the morphological traits with the greatest direct effect on body mass of the 6-month-old and 18-month-old greenling were body length( 0. 706) and full length( 0. 538),respectively,and body length,head length,full length and body height had a decisive effect on the body mass of greenling at 6 months and18 months. In addition to the morphological traits of the above,it should be combined with body width for breeding. The results of the study could provide important reference for the use of the morphological traits of Hexagrammos otakii for breeding.
引文
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[4]FUKUHARA O,FUSHIMI T.Development and early life history of the greenlings Hexagrammos otakii(pices:Hexagrammidae)reared in the laboratory[J].Nippon Suisan Gakkaishi,1983,49(12):1843-1848.
[5]吴立新,秦克静,姜志强,等.大泷六线鱼(Hexagrammos otakii)人工育苗初步试验[J].海洋科学,1996,(4):32-34.WU L X,QIN K J,JIANG Z Q,et al.Preliminary experiment on the artificial breeding of the fat greenling Hexagrammos otakii[J].Marine Sciences,1996,(4):32-34.
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[9]胡发文,潘雷,高凤祥,等.大泷六线鱼胚胎发育及其与水温的关系[J].渔业科学进展,2012,33(1):28-33.HU F W,PAN L,GAO F X,et al.Embryonic development of Hexagrammos otakii and its relationship with incubation temperature[J].Progress in Fishery Sciences,2012,33(1):28-33.
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[11]菅玉霞,潘雷,胡发文,等.温度和盐度对大泷六线鱼仔鱼存活与生长的影响[J].渔业科学进展,2012,33(5):24-29.JIAN Y X,PAN L,HU F W,et al.The effects of temperature and salinity on survival and growth of larval Hexagrammos otakii Jordan et Starks[J].Progress in Fishery Sciences,2012,33(5):24-29.
[12]胡发文,郭文,潘雷,等.大泷六线鱼仔稚幼鱼形态发育与生长特性[J].渔业科学进展,2012,33(6):16-22.HU F W,GUO W,PAN L,et al.Morphological development and growth of larval and juvenile Hexagrammos otakii[J].Progress in Fishery Sciences,2012,33(6):16-22.
[13]潘雷,房慧,张少春,等.大泷六线鱼仔、稚、幼鱼期消化酶活力的变化[J].渔业科学进展,2013,34(3):54-60.PAN L,FANG H,ZHANG S C,et al.The variation of digestive enzymes in larval and juvenile Hexagrammos otakii[J].Progress in Fishery Sciences,2013,34(3):54-60.
[14]胡发文,张少春,王雪,等.大泷六线鱼全人工繁育技术研究[J].海洋科学,2016,40(3):71-76.HU F W,ZHANG S C,WANG X,et al.An artificial breeding technique for the fat greenling Hexagrammos otakii[J].Marine Science,2016,40(3):71-76.
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