TY - JOUR
T1 - Morphological changes in the gills of tilapia fed sterilized and nonsterilized sludge.
AU - Liu, W. K.
AU - WONG, Ming Hung
AU - Cheung, Y. H.
N1 - Copyright:
Medline is the source for the citation and abstract of this record.
PY - 1989/6
Y1 - 1989/6
N2 - The effects of digested sludge on the ultrastructure of gills of Sarotherodon mossambicus were investigated. Samples of digested sludge were collected from the Shatin Sewage Treatment Plant in Hong Kong and they were (1) sun-dried (NS) or (2) sterilized in an autoclave (SS). They were then used as supplementary fish feed to cultivate the freshwater tilapia, S. mossambicus, for 50 days under laboratory conditions. The SS at low dosage (25%) had the lowest toxicity among different treatments. A swelling of lamellar epithelium, the enlargement of the the subepithelial space, the collapse of capillaries, and the infiltration of polymorphonuclear cells in the lamellae of fish gills were common to fish fed 50 to 100% NS and SS. The thickening of the basal lamina in the gill lamellae is a common feature found in the sludge-treated fish.
AB - The effects of digested sludge on the ultrastructure of gills of Sarotherodon mossambicus were investigated. Samples of digested sludge were collected from the Shatin Sewage Treatment Plant in Hong Kong and they were (1) sun-dried (NS) or (2) sterilized in an autoclave (SS). They were then used as supplementary fish feed to cultivate the freshwater tilapia, S. mossambicus, for 50 days under laboratory conditions. The SS at low dosage (25%) had the lowest toxicity among different treatments. A swelling of lamellar epithelium, the enlargement of the the subepithelial space, the collapse of capillaries, and the infiltration of polymorphonuclear cells in the lamellae of fish gills were common to fish fed 50 to 100% NS and SS. The thickening of the basal lamina in the gill lamellae is a common feature found in the sludge-treated fish.
UR - https://pubmed.ncbi.nlm.nih.gov/2590503/
UR - http://www.scopus.com/inward/record.url?scp=0024678365&partnerID=8YFLogxK
M3 - Journal article
C2 - 2590503
AN - SCOPUS:0024678365
SN - 0895-3988
VL - 2
SP - 81
EP - 91
JO - Biomedical and Environmental Sciences
JF - Biomedical and Environmental Sciences
IS - 2
ER -