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Histological and enzyme histochemical changes in the kidney of male bullhead ( Cottus gobio ) during the spawning period
Author(s) -
Bucher F.,
Hofer R.
Publication year - 1993
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.1095-8649.1993.tb00343.x
Subject(s) - biology , excretory system , basophilic , alkaline phosphatase , acid phosphatase , brush border , kidney , esterase , endocrinology , enzyme , cottus , epithelium , medicine , zoology , anatomy , fish <actinopterygii> , biochemistry , fishery , pathology , vesicle , genetics , membrane
Histological and enzyme histochemical studies were carried out on the excretory kidney of the male bullhead ( Cottus gobio ). During the spawning season striking morphofunctional changes were observed in the second proximal segment of the kidney tubule. The tubular epithelium was greatly hypertrophied, strongly basophilic and produced a PAS‐positive secretion. The enzyme histochemical pattern also changed conspicuously during this time: the alkaline phosphatase activity in the brush border was greatly reduced; the acid phosphatase and non‐specific esterase activity in the cytoplasm was distinctly elevated.