Department of Biological Science and Institute for Biodiversity Research, College of Natural Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea.
Department of Biological Science and Institute for Biodiversity Research, College of Natural Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea,
Zoolog Sci. 2020 Dec;37(6):575-579. doi: 10.2108/zs200046.
The morphology and morphometry of the olfactory organ of Korean torrent catfishes, genus , consisting of only five endemic species, were investigated by stereo microscopy, scanning electron microscopy, and statistical analysis. They showed the same morphological structure, externally and internally, including a tubular anterior nostril, a slit posterior nostril, and a rosette structure with several linguiform lamellae. Interestingly, however, the lamellar number (LN) revealed specific characteristics useful to identify the five species anatomically: 16-19 in (with standard length, SL, 96.8 ± 5.5 mm, mean ± SD), 14-16 in (86.9 ± 13.4 mm), 22-27 in (99.8 14.7 mm), 19-24 in (90.1 ± 6.7 mm), and 14-18 in (74.0 ± 6.7 mm). Regarding SL, that of . was longer than those of . and . . As opposed to the SL, the LN to SL ratios of . (24.1 ± 2.1%) and . (21.1 ± 1.4%) were greater than that of . (18 ± 1.2%). These differences might be considered to reflect an interspecific morphological adaptation to micro-habitat according to olfactory importance and can be used as a taxonomic characteristic for this genus.
五种仅分布于韩国的洞穴性鲶鱼，即朝鲜洞穴鲶属鱼类，通过立体显微镜、扫描电子显微镜和统计分析，对其嗅觉器官的形态和形态计量学进行了研究。它们在外部和内部都具有相同的形态结构，包括管状的前鼻孔、裂缝状的后鼻孔和具有几个舌形薄片的玫瑰花结结构。然而，有趣的是，薄片数量（LN）显示出一些特定的特征，这些特征在解剖学上有助于识别这五个物种：在（标准体长，SL，96.8 ± 5.5 毫米，平均值 ± 标准差）中为 16-19 个，在（86.9 ± 13.4 毫米）中为 14-16 个，在（99.8 ± 14.7 毫米）中为 22-27 个，在（90.1 ± 6.7 毫米）中为 19-24 个，在（74.0 ± 6.7 毫米）中为 14-18 个。关于 SL，的长度大于和的长度。与 SL 相反，的 LN 与 SL 的比值（24.1 ± 2.1%）和（21.1 ± 1.4%）大于的比值（18 ± 1.2%）。这些差异可能被认为反映了根据嗅觉重要性的种间形态适应，并且可以用作该属的分类特征。
