Gustatory ultrastructures of an amphihaline migratory fish hilsa Tenualosa ilisha

Malik, C M and Chatterjee, S K and Bhattacharya, Samir and Suresh, V V R and Kundu, Rakesh and Saikia, S K (2020) Gustatory ultrastructures of an amphihaline migratory fish hilsa Tenualosa ilisha. Microscopy Research and Technique, 83 (5). pp. 507-513.

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Abstract

This study was conducted with the tongue samples of different life stages of hilsa, that is, adult Marine hilsa, adult Riverine hilsa, and Riverine juvenile hilsa, respectively. Three types of taste buds (Types I, II, and III based on their elevation from the epithelium at different levels) of the tongue, which may be to ensure full utilization of the gustatory ability of the fish were rocorded. Presence of specific taste buds indicate that the fish hilsa dwells in turbid waters with a possible preference toward diatom like planktonic food source. Enhanced expression of taste receptors (T1R1 and T1R3) and associated stimulatory G-proteins subunits on tongue also indicate occurrence of amino acid like substances that guided sensory cues for feeding by this fish. A firm regularity or stringency of the free surface of the epithelial cells may be attributed to compactly arranged microridges. These structures protect against physical abrasions potentially caused during food manoeuvring and swallowing. In our present observations, the surface architectures of the tongue of hilsa are discussed within the background of migratory adaptation of the species in the context of feeding and habitat preferences.

Item Type:	Article
Uncontrolled Keywords:	chemoreception, gustation, migratory fish, taste buds, taste receptor
Subjects:	Aquaculture > Tropical fish Fish and Fisheries > Fish biology
Divisions:	CMFRI-Kochi > Mariculture Division Subject Area > CMFRI > CMFRI-Kochi > Mariculture Division CMFRI-Kochi > Mariculture Division Subject Area > CMFRI-Kochi > Mariculture Division
Depositing User:	Arun Surendran
Date Deposited:	02 Nov 2021 04:26
Last Modified:	02 Nov 2021 04:26
URI:	http://eprints.cmfri.org.in/id/eprint/15450

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