Observation of the Skin Histology of Thamnaconus septentrionalis

Luying PAN; Li BIAN; Yun YANG; Fenghui LI; Qiong HU; Ziyang ZHANG; Xiaoran WANG; Qing KONG; Siqing CHEN

doi:10.19663/j.issn2095-9869.20230330002

Progress in Fishery Sciences (Aug 2024)

Observation of the Skin Histology of Thamnaconus septentrionalis

Luying PAN,
Li BIAN,
Yun YANG,
Fenghui LI,
Qiong HU,
Ziyang ZHANG,
Xiaoran WANG,
Qing KONG,
Siqing CHEN

Affiliations

Luying PAN: College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
Li BIAN: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Yun YANG: College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
Fenghui LI: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Qiong HU: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Ziyang ZHANG: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Xiaoran WANG: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China
Qing KONG: College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
Siqing CHEN: Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China

DOI: https://doi.org/10.19663/j.issn2095-9869.20230330002
Journal volume & issue: Vol. 45, no. 4
pp. 65 – 74

Abstract

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Fish skin is a multipurpose tissue with important functions—protection, perception, and hormone metabolism—in the fish body. As a byproduct of fish processing, it can be used as a material for extracting collagen, making leather, and related pathological research. However, there have been few reports on the tissue structure of fish skin. This study aimed to analyze the structural characteristics of Thamnaconus septentrionalis fish skin in order to provide a reference for the utilization of its resources. Six T. septentrionalis samples were selected and their skins were observed using frozen sectioning, skeletal, hematoxylin & eosin (H & E), Periodic acid-Schiff (PAS), Masson, Van Gieson (VG) staining, and scanning electron microscopy. The images obtained by slice scanning were analyzed using SlideViewer (3DHISTECH), ImageJ, and Photoshop software. The SEM images were analyzed using ImageJ and Photoshop software. SPSS25.0 software was used to analyze the data of epidermal and squamous layers, conical bone bulge, basal layer, and dermis thicknesses. The results showed that the histological structure of the skin comprised four parts: epidermis, scale layer, dermis, and subcutaneous tissue. The thickness of the epidermal layer was (26.81±7.48) μm. This layer was mainly composed of epithelial and basal cells but also contained a large number of mucus cells. The scale layer consisted of the spine of conical bone and a substrate. The thickness of this layer was (22.49±5.19) μm, and there were two to four rows of the spine of conical bone with different diameters, different bending degrees at the top, and a height of (257.13±10.41) μm unevenly distributed on the base plate. The average thickness of the dermis was (176.97±21.11) μm, and the dermis thickness of the head was lower than that of the middle part of the body, but higher than that of the tail, mainly composed of collagen fiber. The subcutaneous tissue layer was mainly comprised of collagen fibers and non-fibrous stroma. In this study, the histological pattern of the skin of T. septentrionalis was mapped according to its characteristics, providing valuable information for fish skin resource usage.

Published in Progress in Fishery Sciences

ISSN: 2095-9869 (Print)
Publisher: Science Press, PR China
Country of publisher: China
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: http://journal.yykxjz.cn/yykxjzen/ch/index.aspx

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