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Sagittal otolith shape used in the identification of fishes of thegenus Serranus

机译：矢状耳石形状用于识别Serranus属鱼类

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摘要

Shape descriptors of saccular otoliths (sagittae) obtained by image analysis were investigated for the identification of three species of genus Serranus inhabiting the Canary Islands. The main of the paper was applied shape descriptors that could explain better the otolith shape differences found among these species. Some descriptors (EllipProffitt, CircProffitt, EllipVoss, TriVoss, ConvexCM1, ConvexCM2, Intrusiveness, Protrusiveness, ConvexJ, EllipLMedS, EllipMom, TriMom, Rectil, RectRobust, SqFFT, SymmL and SymmF) were used for the first time in a biological application as fish taxonomy. The variables were standardized with respect to otolith-fish length and the otolith weight added in the analysis. The standardization of otolith shape variable provided better results with respect to otolith length (82.7% of agreement) versus fish length (72.8%). ConvexR0, Ecc and Protrusiveness were the main shape variables that explain the inter-species variability. However, when the otolith weight was added in the analysis the discrimination was better with respect to fish length (86.4%), being the variable more significant.
机译：通过图像分析获得的囊耳石（sagittae）的形状描述符进行了研究，以鉴定居住在加那利群岛的三种Serranus属。本文的主要内容是应用了形状描述符，可以更好地解释这些物种之间发现的耳石形状差异。某些描述符（EllipProffitt，CircProffitt，EllipVoss，TriVoss，ConvexCM1，ConvexCM2，Intrusiveness，Protrusiveness，ConvexJ，EllipLMedS，EllipMom，TriMom，Rectil，RectRobust，SqFFT，SymmL和SymmFnomy）在第一次使用时被用作分类法。相对于耳石鱼长度和分析中添加的耳石重量标准化了变量。耳石形状变量的标准化相对于鱼体长度（72.8％）提供了更好的耳石长度（一致同意的82.7％）的结果。 ConvexR0，Ecc和突出性是解释物种间变异性的主要形状变量。但是，在分析中添加耳石重量时，鱼类长度的区分度更好（86.4％），该变量更为显着。

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