The Structure of the Lingual Papillary of the Asian Palm Civet’s (
Paradoxurus hermaphorditus ): The Analysis of Feeding Habit Adaption
using Gross-Morphometric, Scanning Electron Microscope, Light Microscope
(Histochemistry Staining)
Abstract
The Asian palm civet ( Paradoxurus hermaphroditus) is a wild
mammal which is living in nature in Indonesia forest. Recently due to
the highest demand of civet coffee, push the changes of the living
environment of the Asian palm civet as the pet or captive breed. Changes
in the environment from the wild to human intervention cause shift in
their behaviour and feeding patterns. This is thought possibly to affect
it’s anatomical structure and histology digestive organ and mainly the
lingual papillae as an entrance of the food. This study aims to analyse
the anatomical structure of the lingual papillae and the secretions of
the lingual glands in Paradoxurus hermaphroditus due to the
changes of the food behaviour by gross macroscopy, scanning electron
microscopy (SEM) and light microscopy (LM) in the form of histochemical
staining (hematoxyline eosin, Alcian Blue-Periodic Acid Schiff, and
Masson’s Trichrome). The SEM results revealed that several type lingual
papillae are found on the tongue of the Paradoxurus
hermaphroditus they are: fungiform, arrowhead filiform, giant arrowhead
filiform, scale-like filiform, conical, and circumvallate papillae. The
histological results showed that on the radix of tongue of the civet are
found Weber’s glands which produce the secretion of neutral and acid
mucin. Collagen fibers were found scattered in all of the lamina propria
and some of the tunica muscularis with higher collagen intensity at the
apex. In conclusion, these results provide the new insight of the
adaptation form of the lingual papillae of the Asian palm civet due to
their changes of feeding behaviour based on the type, number,
distribution of the papillae, as well as the type of lingual gland
secret and the presence of the collagen fibre.