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http://dx.doi.org/10.35399/ISK.34.3.1

Morphology and Histology of the Olfactory Organ in the Korean Endemic Species, Pseudobagrus koreanus (Cypriniformes, Cyprinidae)  

Kim, Hyun-Tae (Department of Science Education, Jeonju National University of Education)
Chae, Dong-Hyun (Department of Science Education, Jeonju National University of Education)
Publication Information
Korean Journal of Ichthyology / v.34, no.3, 2022 , pp. 153-159 More about this Journal
Abstract
The olfactory organ of a Korean endemic species, Pseudobagrus koreanus, was investigated to describe its morphology and histology and analyze correlation between habitat environment and its ecological habits and characters, using a stereo microscope, a light microscope, and a scanning electron microscope. Its external morphology showed tubular anterior nostril at the tip of the snout and slit posterior nostril at the base of the nasal barbel. The olfactory chamber showed the rosette structure consisting of numerous lamellae radial and parallel to the medium raphe. The olfactory lamella has the sensory epithelium with olfactory receptor nuerons, supporting cells, basal cells, lymphatic cells, plasma cells and the non-sensory epithelium with stratified epithelial cells, mucous cells, lymphatic cells. In particular, 1) 41~43 (n=20) lamellae, 2) lymphatic cells and plasma cells, 3) mucous cells including neutral polysaccharid may be olfactory characteristics relevant to a stagnant or a standing habitat environment, nocturnal habit dependent on olfaction, and taxonomic characters compared at least to other catfish species.
Keywords
Olfactory lamellae; lymphatic cell; plasma cell; mucous cell; taxonomic character;
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