Enhanced Chloride Cell Turnover in the Gills of Chum Salmon Fry in Seawater
スポンサーリンク
概要
- 論文の詳細を見る
Cellular differentiation and renewal in the gill chloride cells were examined in freshwater (FW)- and seawater (SW)-adapted chum salmon (Oncorhynchus keta) fry and in fry during SW adaptation using 5-bromo-2'-deoxyuridine (BrdU) as a marker for newly-differentiated cells. Chloride cells and BrdU-labeled nuclei were immunocytochemically detected by using antisera specific for Na^+, K^+-ATPase and BrdU, respectively. Although the number of chloride cells located at the base of the lamellae and in the interlamellar region (filament chloride cells) was constant in FW, SW and SW-transferred groups, chloride cells located in the lamellar epithelium (lamellar chloride cells) were fewer in SW than in FW, and decreased during SW adaptation. Newly-differentiated cells with BrdU-immunoreactive nuclei were detected mainly in the filaments, and rarely observed in the lamellae. The turnover rates of filament chloride cells for FW, SW and SW-transferred fish during the first 24 hr were 8%, 21% and 28%, respectively. These results indicate that chloride cells in the filament are replaced continuously by newly-differentiated cells in both FW and SW, and that the turnover was about 3 times greater in SW than in FW. More frequent turnover of filament chloride cells in SW suggests a specific role, presumably in salt excretion.
- 社団法人日本動物学会の論文
- 1996-10-15
著者
-
Kaneko Toyoji
Ocean Research Institute University Of Tokyo
-
Uchida Katsuhisa
Ocean Research Institute University Of Tokyo
関連論文
- Plasma vitellogenin levels in male common carp Cyprinus carpio and crucian carp Carassius cuvieri of Lake Kasumigaura
- Response of a neotenic goby, ice goby (Leucopsarion petersii), to thyroid hormone and thiourea treatments
- Immunolocalization of Vacuolar-Type H+-ATPase in the Yolk-Sac Membrane of Tilapia (Oreochromis mossambicus) Larvae
- Extrabranchial chloride cells in early life stages of the Japanese eel, Anguilla japonica
- Chloride cells during early life stages of fish and their functional differentiation
- Developmental Sequence of Chloride Cells in the Body Skin and Gills of Japanese Flounder (Paralichthys olivaceus) Larvae
- Distributional changes in branchial chloride cells during freshwater adaptation in Japanese sea bass Lateolabrax japonicus
- Evidence for chloride secretion from chloride cells in the yolk-sac membrane of Mozambique tilapia larvae adapted to seawater
- Enhanced Chloride Cell Turnover in the Gills of Chum Salmon Fry in Seawater
- Shift of Chloride Cell Distribution during Early Life Stages in Seawater-Adapted Killifish, Fundulus heteroclitus(Physiology)
- Excellent Salinity Tolerance of Mozambique Tilapia (Oreochromis mossambicus) : Elevated Chloride Cell Activity in the Branchial and Opercular Epithelia of the Fish Adapted to Concentrated Seawater(Physiology)
- Acid Tolerance of Japanese Dace (a Cyprinid Teleost) in Lake Osorezan, a Remarkable Acid Lake(Physiology)
- Immunocytochemical Detection of Prolactin and Growth Hormone Cells in the Pituitary during Early Development of the Japanese Eel, Anguilla japonica(Endocrinology)
- Effects of environmental Ca^ levels on branchial chloride cell morphology in freshwater-adapted killifish Fundulus heteroclitus
- Application of Laser Scanning Microscopy to Morphological Observations on Drinking in Freshwater Medaka Larvae and Those Exposed to 80% Seawater