The tub gurnard, Chelidonichthys lucerna, is considered the most important commercial fish species of the family Triglidae captured by the Portuguese traditional fisheries. However, the data available about its population structure, movement patterns and habitat connectivity is, at present, scarce. In this study, otolith chemistry and shape analyses of 90 individuals captured, between March and June 2016, in the three main fishing grounds of the Portuguese mainland coast (Matosinhos, Aveiro and Peniche) were investigated. Otolith morphological (shape indices and elliptic Fourier descriptors) and elemental (Ba:Ca, Fe:Ca, Mg:Ca, Mn:Ca, Sr:Ca and Zn:Ca) signatures of individuals with similar length range were assessed through uni and multivariate statistical tests. The overall combination of otolith elemental chemistry and morphology techniques revealed the highest re-classification success (74%) of samples to their original location and the existence of significant differences among sampling regions. However, linear discrimination function analyses and canonical analyses of principal coordinates did not fully discriminate C. lucerna individuals from the three sampling regions of Portugal. Moreover, the hereby data revealed a partial overlap among individuals from the different sampling regions. The obtained shape and chemical signatures suggest that C. lucerna is apparently a unique, although not necessarily homogenous, single population-unit in Portugal mainland, and that these fish populations should not be managed separately for fisheries purposes.

盆鱼，Chelidonichthys lucerna被认为是葡萄牙传统渔业捕获的Triglidae家族中最重要的商业鱼类。但是，目前缺乏有关其人口结构，迁徙方式和栖息地连通性的数据。在这项研究中，调查了2016年3月至6月之间在葡萄牙大陆海岸的三个主要渔场（Matosinhos，Aveiro和Peniche）捕获的90个人的耳石化学和形状分析。通过单变量和多变量评估了具有相似长度范围的个体的耳石形态学特征（形状指数和椭圆傅立叶描述子）和元素特征（Ba：Ca，Fe：Ca，Mg：Ca，Mn：Ca，Sr：Ca和Zn：Ca）统计检验。耳石元素化学和形态学技术的整体组合显示，将样品重新分类到原始位置的成功率最高（74％），并且在采样区域之间存在显着差异。但是，线性判别函数分析和主坐标的规范分析不能完全区别来自葡萄牙三个采样区的琉璃假单胞菌个体。此外，由此数据揭示了来自不同采样区域的个体之间的部分重叠。所获得的形状和化学特征表明，琉球假单胞菌显然是葡萄牙大陆的唯一（尽管不一定是同质的）单一种群单位，并且这些鱼类不应单独用于渔业目的。