Ultrastructure of Integument of the Smooth Lumpsucker, Aptocyclus ventricosus (Pallas, 1769) (Teleostei: Cyclopteridae)

뚝지, Aptocyclus ventricosus 피부의 미세구조

  • Jeon, Mi Ae (Department of Aqualife Medicine, Chonnam National University) ;
  • Kim, Hyejin (Department of Aqualife Medicine, Chonnam National University) ;
  • Park, Jung Jun (South Sea Fisheries Research Institute, NIFS) ;
  • Kim, Jea Won (Department of Marine Life Science & Aquaculture, Gangwon Provincial College) ;
  • Lee, Jung Sick (Department of Aqualife Medicine, Chonnam National University)
  • 전미애 (전남대학교 수산생명의학과) ;
  • 김혜진 (전남대학교 수산생명의학과) ;
  • 박정준 (국립수산과학원 남해수산연구소) ;
  • 김재원 (강원도립대학교 해양생명과학과) ;
  • 이정식 (전남대학교 수산생명의학과)
  • Received : 2016.08.02
  • Accepted : 2016.09.16
  • Published : 2016.09.30

Abstract

This study describes the cell type, ultrastructure and histochemical characteristics as a preliminary study for the research on integument of the smooth lumpsucker, Aptocyclus ventricosus in accordance with the physiological and environmental changes using light and electron microscopes. The SEM revealed the presence of well-developed finger printing structure in the skin surface. The skin surface of the smooth lumpsucker showed an irregular folds in cross section of light microscope. Integument is composed of outer epidermal and inner dermal layer. The epidermal layer is a stratified layer composed of epithelial cells, mucous cells, vacuolar cells, and granular cells. Epithelial cells are classified into superficial, intermediated, and basal cell. The superficial cells were the squamous with well-developed microridges on the free surface, and the microridges were covered with glycocalyx. The mucous cells of unicellular gland were mainly distributed in the apical layer of epidermis and contained mucosal materials of neutral glycoprotein. The vacuolar cells of unicellular gland were mainly distributed in the mid and basal layer of epidermis. The proportion of mucous cells and vacuolar cells were $7.0({\pm}1.07)%$ and $40.6({\pm}3.31)%$ of epidermal area, respectively. The granular cells contained membrane bounded secretory granules with high electron density and developed cell organelles in the cytoplasm. The dermal layer was loose connective tissue layer and composed of mainly collagen fibers. It also contained blood vessels and chromatophores of melanophores and reflecting platelets.

Keywords

References

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