Changing of taste organ in Persian sturgeon (Acipenser persicus, Borodin, 1897) during early development

Document Type : Research Paper

Authors

1 Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran.

2 Department of Fisheries Faculty of Natural Resources, University of Tehran, Karaj, Iran.

10.22124/janb.2024.27053.1239

Abstract

In the first stage of any aquaculture program of a species, it is necessary to know the stages of their initial development. In this study, the development process of the taste organ in the Persian sturgeon (Acipenser persicus) from the time of hatching to the 23 DPH was investigated. For this purpose, after the artificial reproduction of the brood, the larvae were sampled daily from the 1 to 9 DPH, and randomly from the 12, 16, 20, and 20 DPH to prepare SEM electron microscope images. In DPH 1, the barblels were forming and a number of taste buds could be seen in the place where the mouth was formed. At the same time with the appearance of the lips and the growth and differentiation of the barbels, the taste buds developed. From DPH 5, the growth of taste buds increased and the number and size of these buds continued in the lips, inside the mouth and barbles.
From DPH 12, this increase decreased to some extent and happened only with the growth of the buds, and from the 20 DPH onwards, it remained almost unchanged in terms of number and only the buds reached maturity. Also, the number and density of taste buds in the upper lip was higher than the lower lip. The results of the maximum development process (DPH 5 – DPH 8) of taste buds show the compatibility of the development of taste buds of the Persian sturgeon with the start of active feeding of this species (at DPH 8).

Keywords

Main Subjects

Aquatic Animals Nutrition

Articles in Press, Accepted Manuscript
Available Online from 23 May 2024

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