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Ultrastructure and Histochemistry on the Integumentary System of the Grass Puffer, Takifugu niphobles (Teleostei: Tetraodontidae)  

An, Chul Min (Fisheries Resources Restoration Development and Management Center, NFRDI)
Kim, Jae Won (Department of Marine Bio-resources, Gangwon Provincial College)
Jin, Young Guk (Department of Aqualife Medicine, Chonnam National University)
Park, Jung Jun (Department of Aqualife Medicine, Chonnam National University)
Lee, Jung Sick (Department of Aqualife Medicine, Chonnam National University)
Publication Information
Korean Journal of Ichthyology / v.19, no.3, 2007 , pp. 201-209 More about this Journal
Abstract
The fine structures and histochemical features on the integumentary system of the grass puffer, Takifugu niphobles were examined by means of the light and transmission electron microscopy. Integumentary surface of the grass puffer showed irregular folds in light microscope. The folds of the ventral region are more pronounced than those in the dorsal region. Integumentary system is composed of outer epidermal layer and inner dermal layer. The stratified epidermal layer consists of epithelia, mucous cells, club cells, granular cells and multivacuolar gland. Epithelial cells are classified into superficial, intermediated and basal cell, and free surface of superficial cell is covered with microridges. Glands of the epidermal layer are divided into unicellular and multicellular gland. Mucous cells of multicellular gland contains mucosal materials of neutral glycoprotein. Multivacuolar gland is composed of numerous vacuole cells of about $20{\mu}m$ in axial diameter. Vacuole cells contains a large central vacuole and are connected to another by many desmosomes. The mucous glands and multivacuolar glands are more abundant in ventral region than dorsal integument. The thickness of dermis is more three to five times than epidermis in ventral integument. The collagen fibers, fibrocytes, nerve cells, basal plate of spine and chromatophore are observed in the dermal layer of compact connective tissue.
Keywords
Takifugu niphobles; integument; ultrastructure; multicellular gland;
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