Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101, Reykjavík, Iceland.
J Fish Biol. 2014 May;84(5):1626-33. doi: 10.1111/jfb.12390.
Twenty-five Atlantic cod Gadus morhua otoliths were examined using eight shape measurements along with Fourier analysis of their outlines to test whether discrimination using otolith shape is affected by gluing broken otoliths. Small differences in seven of the eight shape measurements were found between unbroken otoliths and the same otoliths after breaking and subsequently gluing together; however, none of the Fourier descriptors differed. Cluster analyses indicated that resultant morphological differences will have no impact when applying discriminant analysis.
对 25 个大西洋鳕鱼（ Gadus morhua ）耳石进行了检查，使用了 8 个形状测量值以及它们轮廓的傅里叶分析，以测试使用耳石形状进行区分是否受到粘合破碎耳石的影响。在未破碎的耳石和破碎后再粘合在一起的相同耳石之间，8 个形状测量值中的 7 个值存在很小的差异；然而，傅里叶描述符没有差异。聚类分析表明，在应用判别分析时，所得的形态差异没有影响。
