Acta Ichthyologica et Piscatoria 30(2): 85-92, doi: 10.3750/AIP2000.30.2.08
Structural changes in seawater-adapted rainbow trout (Oncorhynchus mykiss Walb.) gills
expand article infoK. Radziun, W. Wawrzyniak, A. Sobociński
Open Access
Changes in juvenile rainbow trout (Oncorhynchus mykiss Walb.) gills at different times after transfer to a brackish water (4-7‰) culture in the Puck Bay were followed. Total gill tissue mounts as well as thin and ultra-thin sections were examined. Acute inflammation of the gill tissue, observed initially, receded after 2 weeks of adaptation. After 2 months in the culture, the gill structure was transformed, the transformations involving, i.e. increase in the activity and number of chloride cells and increase in the gill epithelium intercellular spaces.