The morphology and morphometry of olfactory systems of three fishes; Scomberoides commersonnianus, Rastrelliger kanagurta and Sphyraena obtusata were explored. The olfactory organs are round in S. commersonnianus and oval in the other two species. In the present study, 19 olfactory morphometric characters and 6 ratios (of some of the traits) are quantified. In the selected species, the mean values of all the traits and ratios were significantly different among the species (p < 0.001). The correlations between all olfactory traits and total length, standard length, head length and body weight are significant for all the species (p < 0.001). Principal Component Analysis revealed that the olfactory systems of studied species are dissimilar (both in size and shape) while, Cluster Analysis depicted that the difference is greater between the olfactory system of S. obtusata and the other two species. The traits that chiefly discriminate the olfactory systems of targeted species are length of both nostrils; length, width and volume of olfactory organ.

中文翻译：

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巴基斯坦三种浮游珍珠岩种类的嗅觉形态和形态比较

三种鱼类嗅觉系统的形态和形态；探索了Scomberoides commersonnianus，Rastrelliger kanagurta和Sphyraena obtusata。嗅觉器官在沙门氏菌中是圆形的，在其他两个物种中是椭圆形的。在本研究中，量化了19个嗅觉形态特征和6个比率（某些特征）。在选定的物种中，所有性状和比率的平均值在物种之间存在显着差异（p <0.001）。所有物种的所有嗅觉性状与总长度，标准长度，头长和体重之间的相关性均显着（p<0.001）。主成分分析表明，所研究物种的嗅觉系统是不同的（大小和形状都不同），而聚类分析表明，钝齿沙门氏菌与其他两个物种的嗅觉系统之间的差异更大。主要区分目标物种嗅觉系统的特征是两个鼻孔的长度。嗅器官的长度，宽度和体积。