Abstract—

Otolith shape analysis was conducted with two methods on nine samples of the Mediterranean horse mackerel Trachurus mediterraneus (Steindachner, 1868) caught in Sevastopol and Balaklava bays in 2017–2018. The first method was based on morphometric measurements: length, width, perimeter, and area, which were adjusted to the average fish length from all studied samples; six otolith shape indices were obtained for the analysis: aspect ratio, circularity, rectangularity, roundness, form factor, and ellipticity. The second approach used coefficients of the elliptical Fourier analysis of otolith contours. No significant differences were found between the left and right otoliths as well as between otoliths of males and females. The results of discrimination between the samples were different for these two methods, but in general, otoliths of the horse mackerel from all studied bays did not differ significantly in both shape indices and Fourier coefficients.

中文翻译：

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来自塞瓦斯托波尔和巴拉克拉瓦（黑海）沿海水域的地中海鲭鱼的耳石形状分析，Trachurus mediterraneus（Steindachner，1868）（鲈形目：Carangidae）

摘要-

使用两种方法对地中海竹荚鱼Trachurus mediterraneus 的九个样本进行耳石形状分析（Steindachner，1868 年）2017-2018 年在塞瓦斯托波尔和巴拉克拉瓦湾捕获。第一种方法基于形态测量：长度、宽度、周长和面积，根据所有研究样本的平均鱼长进行调整；为分析获得了六个耳石形状指数：纵横比、圆形度、矩形度、圆度、形状因子和椭圆度。第二种方法使用耳石轮廓的椭圆傅立叶分析的系数。在左右耳石之间以及雄性和雌性耳石之间没有发现显着差异。这两种方法的样本区分结果不同，但总的来说，来自所有研究海湾的竹荚鱼耳石在形状指数和傅立叶系数方面没有显着差异。