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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Electron Microscopic Study of the Gills of Puntius gonioMtur (Bleeker) Exposed to Coppe) ผู้เขียน: นายประมาณ พรหมสุทธิรักษ์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractElectron microscopic observations on the gill lamellae of Pla Tapien Khao - Puntius go~rionotus( Bleeker) exposed to different concentrations of copper solution for 48 hr were as follows : particles which were presumably copper origin were attached to the outer surface of the epithelium; these particles were also found in the intercellular spaces; inclusions were found in the cytoplasms of both epithelial cells and chloride cells; a dead cell was noted in one occasion; and at high concentration of copper, intercellular spaces were hardly seen. These evidences showed the difficulties of gas exchange. Thus, it might be concluded that the death of the fish tested was the result of oxygen deficiency. |
หัวเรื่อง:การศึกษาผิวหนังของปลาที่ได้รับผลกระทบจากการเปลี่ยนแปลงค่า pH ของน้ำด้วยกล้องจุลทรรศน์อิเล็กตรอน ผู้เขียน:นายประมาณ พรหมสุทธิรักษ์, รองศาสตราจารย์,  Rujiporn Sincharoenkul สื่อสิ่งพิมพ์:pdf AbstractThe epidermis of Clarias macrocephalus (G?nther), Pangasius pangasius (Buchanun) and Ophicephalus striatus Bloch unexposed and exposed to the acidity or alkalinity of the water, with the temperature range of 24-29?C, for 96 hours was ultrastructurally studied. At low and high pH, both filament-containing cells in the uppermost surface layer and goblet mucous cells were involved in releasing more mucus. The former produced numerous vesicles passing through terminal web, while the latter increased in number closed to the surface layer. At pH 3.46-3.38 chloride cells which have osmoreguratory function became active in secretory activities, showing distended tubules in their cytoplasms. An unidentified matrix was found in a club cell at high pH. When the experimental time was prolonged to 11 days of low pH exposure (4-6.8), a symptom of necrotic cells at the basal layer occurred, showing abnormalities in their cytoplasms. |
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หัวเรื่อง:การศึกษาลักษณะชนิดของเม็ดเลือดขาวในปลาช่อนและปลาดุกด้าน ผู้เขียน:นายประมาณ พรหมสุทธิรักษ์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf Abstract Four types of leucocytes, namely lymphocytes, neutrophils, eosinophils and macrophages, were found in the gill lamellae and kidney of Clarias batrachus Linnaeus and Ophicephalus striatus Bloch. The fine structure of these cells was described. The differences in electron micrograph appearances among the leucocytes in the same fish species and the resemblance of the same kind of leucocytes in the different fish species were indicated. |
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