Distribution, Innervation, and Cellular Organization of Taste Buds in the Sea Catfish, Plotosus japonicus

Brain, Behavior and Evolution
Tatsufumi NakamuraTakanori Ikenaga

Abstract

The gustatory system of the sea catfish Plotosus japonicus, like that of other catfishes, is highly developed. To clarify the details of the morphology of the peripheral gustatory system of Plotosus, we used whole-mount immunohistochemistry to investigate the distribution and innervation of the taste buds within multiple organs including the barbels, oropharyngeal cavity, fins (pectoral, dorsal, and caudal), and trunk. Labeled taste buds could be observed in all the organs examined. The density of the taste buds was higher along the leading edges of the barbels and fins; this likely increases the chance of detecting food. In all the fins, the taste buds were distributed in linear arrays parallel to the fin rays. Labeling of nerve fibers by anti-acetylated tubulin antibody showed that the taste buds within each sensory field are innervated in different ways. In the barbels, large nerve bundles run along the length of the organ, with fascicles branching off to innervate polygonally organized groups of taste buds. In the fins, nerve bundles run along the axis of fin rays to innervate taste buds lying in a line. In each case, small fascicles of fibers branch from large bundles and terminate within the basal portions of the taste bu...Continue Reading

Citations

Feb 9, 2019·Journal of Morphology·Taeko MiyazakiNaoyuki Yamamoto
May 6, 2020·Scientific Reports·Alexander O Kasumyan, Grigoryi E Mouromtsev
May 29, 2018·Experimental and Therapeutic Medicine·Zhijing ZhaoShushu Wang

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