On the Issue of Statistically Significant Differences between the Average Values of Plastic Traits in Two Groups of Juvenile Fish and between the Average Values of Their Indices

Biology Bulletin Reviews Pub Date : 2024-04-18 DOI:10.1134/s2079086424020087

F. S. Lobyrev

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Abstract

We have studied the regularities that determine the preservation and/or change in statistically significant differences when switching from comparing the average values of plastic traits of juvenile fish to comparing the average values of their indices. An algorithm for evaluating the factors determining the variability of plastic traits and their indices in allometry has been proposed. We identified and parametrized three cases of variability: (a) statistically significant differences are absent between the values of plastic traits and their indices, (b) significant differences disappear when switching from comparing features to comparing their indices, and (c) significant differences in both cases remain. Case (b) is associated with different initial length of juveniles and different hatching time; case (c) is determined by different growth rates in the compared groups. The approach was tested on the selection of fingerlings of the Perca fluviatilus L. perch from two water bodies of the Staritsky district of Tver oblast.

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关于两组幼鱼可塑性特征平均值及其指数平均值之间存在显著统计学差异的问题

摘要我们研究了当从比较幼鱼可塑性特征的平均值转向比较其指数的平均值时，决定统计学显著差异的保持和/或变化的规律性。我们提出了一种算法，用于评估在异体测量中决定可塑性特征及其指数变异性的因素。我们确定并参数化了三种变异情况：(a) 塑性特征值及其指数之间不存在统计学意义上的显著差异；(b) 从比较特征转为比较其指数时，显著差异消失；(c) 两种情况都存在显著差异。情况（b）与幼体的初始长度和孵化时间不同有关；情况（c）由比较组的不同生长率决定。在特维尔州斯塔里茨基区的两个水体中挑选鲈鱼幼鱼时对该方法进行了测试。

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Biology Bulletin Reviews

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