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首页> 外文期刊>Archive of Fishery and Marine Research >Morphometric comparison of Acipenser sturio L. populations based on mixed estimation and morphometric measurements
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Morphometric comparison of Acipenser sturio L. populations based on mixed estimation and morphometric measurements

机译：基于混合估计和形态计量学的of骨种群形态计量学比较

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Quite frequently scientists do not publish the original data but only their results or parts of it leading to incomplete literature information. In order to compare reduced morphometric literature information with morphometric data derived from ownmeasurements, we have adopted and modified an econometric method for the purpose of stock discrimination. This method is called mixed estimation and is a specific type of regression analysis which is inter alia described in Dhrymes (1985), Judge et al. (1988) and Theil (1971). In this context, based on the estimation of morphometric regression parameters the procedure was particularly developed for a comparison of two sturgeon (Acipenser sturio L.) populations, one from the Baltic Sea (main spawning places are located in the Oder and Vistula rivers), the other from the Atlantic (main spawning places are located in the Dordogne, Garonne and Gironde rivers). As a result of our mixed estimation analyses 2 of 10 relationships between body related measures(ana/and dorsal basis lenght) and 3 of 16 relationships between head related measures(eye size, barbel length, mouth width)showed significant differences between the two populations. Since only parts of the morphometric differences are statistically significant between both populations, it must be questioned whether their individuals can be expected to come from two distinct populations.
机译：科学家经常不会发布原始数据，而只会发布其结果或部分数据，从而导致文献信息不完整。为了将减少的形态计量文献信息与从自己的测量得出的形态计量数据进行比较，出于存货歧视的目的，我们采用并修改了计量经济学方法。这种方法称为混合估计，是一种特殊类型的回归分析，尤其是在Dhrymes（1985），Judge等人中进行了描述。 （1988）和泰尔（1971）。在这种情况下，根据形态计量回归参数的估算，该程序专门用于比较两个st鱼（Acipenser sturio L.）种群，其中一个来自波罗的海（主要产卵地位于奥得河和维斯杜拉河），另一个来自大西洋（主要产卵地位于多尔多涅河，加龙河和吉伦特河）。由于我们的混合估计分析结果，与身体相关的测量值之间的10个关系中的2个（ana /和背基长度）和与头部相关的测量值中16个关系中的3个（眼睛大小，口须长度，嘴巴宽度）中的3个表明两个人群之间存在显着差异。由于这两个种群之间只有部分形态学差异在统计上显着，因此必须质疑是否可以期望他们的个体来自两个不同的种群。

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