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为了研究小黄鱼形态性状与体质量之间的关系,以小黄鱼的体质量和8个形态性状(全长、体长、头长、躯干长、尾长、尾柄长、尾柄高及体高)为对象,进行形态性状与体质量的灰色关联分析,以此衡量各形态性状对体质量的相对重要性。结果显示,小黄鱼雌性个体生长速度显著大于雄性个体。所有目标性状中,体质量的变异系数最大(雌性:30.598%;雄性:27.055%),形态性状之间的变异系数相差不大(雌性:9.941~12.543;雄性:8.170~13.295)。小黄鱼的雌雄样本中,形态性状与体质量的灰色关联度存在一定差异,其中,雌性样本的形态性状与体质量的关联度在0.526 6~0.681 2之间,关联度从高到低依次为:全长>体长>躯干长>尾长>尾柄长>体高>尾柄高>头长;而雄性样本的关联度在0.528 4~0.711 6之间,关联度依次为全长>体长>尾长>躯干长>尾柄长>尾柄高>体高>头长。8个形态性状在雌、雄样本中均是全长与体质量的关联度最高,体长次之,头长最低,而其余性状在雌、雄样本中的排序存在一定差别,研究结果为小黄鱼良种选育方案的制定提供了重要指导。
In order to study the relationship between the morphological traits and body weight of small yellow croaker, the body weight and morphological characteristics of eight small yellow croaker (full length, body length, head length, trunk length, tail length, tail length, caudal height and height) Object, gray correlation analysis of morphological traits and body mass, in order to measure the relative importance of the traits of each shape on body mass. The results showed that female individuals of small yellow croaker grew significantly faster than male individuals. Among all the target traits, the coefficient of variation of body weight was the highest (female: 30.598%; male: 27.055%), and the coefficient of variation between morphological traits was not different (female: 9.941-12.543; male: 8.170-13.295). There was a certain difference in gray relational degree between morphological traits and body weight in the female and male samples of small yellow croaker, in which the correlations between the morphological traits and body mass of female samples were between 0.526 6 and 0.681 2, the correlation degree was from high to low, Length> trunk length> tail length> caudal peduncle length> body height> caudal peduncle height> head length; while the correlation coefficient of male samples was between 0.528 4 and 0.711 6, with the correlations of total length> body length> Tail length> Torso length> Tail length> Tail height> Height> Head length. The eight morphological traits in the male and female samples were the highest correlations between total length and body mass, body length followed by the lowest length, while the rest of the traits in the male and female samples there is a certain difference in the order of the results of the study for the small yellow croaker The development of breeding programs provides important guidance.