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Salinity effects on cytometrical parameters of the kidney in the euryhaline teleost Oreochromis mossambicus Peters
Author(s) -
Hwang P. P.,
Wu S. M.
Publication year - 1988
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1988.tb05450.x
Subject(s) - euryhaline , oreochromis mossambicus , biology , seawater , salinity , tilapia , osmoregulation , fish <actinopterygii> , fishery , ecology
Study of the effects of environmental salinity on the glomerular areas and the nuclear areas of the renal tubules in tilapia showed significant differences ( P < 0.001 or 0.05) between seawater‐ and freshwater‐adapted fish. Upon seawater adaptation, there were decreases in the glomerular areas and the nuclear areas in the main segments of the nephron: glomerular, −24.1%; 1st proximal, −17.1%; 2nd proximal, −21.5%; distal, −9.1%; collecting, −26.5%. These cytometrical changes are discussed in relation to the different osmoregulatory functions of euryhaline teleosts adapted to sea water and to fresh water.