Department of Morphology, Physiology, Biochemistry and Animal Productions, Faculty of Veterinary Medicine, University of Messina, Messina, Italy.
Microsc Res Tech. 2012 Dec;75(12):1666-71. doi: 10.1002/jemt.22114. Epub 2012 Sep 11.
The gilthead seabream is a food fish, one of the most frequently used in aquaculture. In the species of commercial interest, feeding in captivity is very important and this process is strictly related to the morphological characteristics of the oral cavity. The aim of this study is, using the standard procedures for light and scanning electron microscopy, to analyze the morphology of the tongue dorsal surface to show if relationships are present between the tongue morphology and the nutritional habits and choices of this farmed species. The main characteristic of the gilthead seabream oral cavity floor is the presence of an apical pouch, with, probably, a protective role mainly for the apical, free part of the tongue. Three zones, like in other teleosts, an apex, a body and a root, can be clearly distinguished. In the pouch foliate-like papillae were observed, while the whole tongue is characterized by the presence of two types of papillae, respectively with a fungiform and cylindroid aspect, both randomly distributed throughout the whole dorsal surface of the tongue. Scattered and numerous taste buds, with the typical pear-onion shape, together with small and numerous taste pores are also present, distributed throughout the tongue surface. Our results demonstrate that in the gilthead seabream important mechanic and sensory roles are carried out by specific anatomical structures. Our anatomical data could give, together with further biochemical and physiological data, an important support with the aim of improving the nutrition of aquaculture species.
真鲷是一种食用鱼，也是水产养殖中最常用的鱼类之一。在商业养殖中，人工饲养非常重要，而这个过程与口腔的形态特征密切相关。本研究旨在采用光镜和扫描电镜的标准程序，分析真鲷舌背表面的形态，以显示舌的形态与该养殖物种的营养习惯和选择之间是否存在关系。真鲷口腔底部的主要特征是存在一个顶端囊，可能主要对舌的顶端、游离部分起保护作用。像其他硬骨鱼一样，真鲷的舌可分为三个区域，即舌尖、舌体和舌根。在囊内观察到叶状乳突，而整个舌的特征是存在两种乳突，分别呈蘑菇状和圆柱状，随机分布在整个舌背表面。还存在许多分散的、具有典型洋葱形的味蕾和小而密集的味蕾孔，分布在整个舌表面。我们的研究结果表明，在真鲷中，特定的解剖结构发挥着重要的机械和感觉作用。我们的解剖学数据可以与进一步的生化和生理学数据一起，为改善水产养殖物种的营养提供重要支持。
