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Morphological effects of mercury exposure on windowpane flounder gills as observed by scanning electron microscopy
Author(s) -
Pereira J. J.
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.tb05500.x
Subject(s) - gill , biology , mercury (programming language) , flounder , scanning electron microscope , scophthalmus , electron microscope , epithelium , respiratory system , anatomy , zoology , fishery , turbot , fish <actinopterygii> , materials science , physics , genetics , computer science , optics , composite material , programming language
Windowpane flounder, Scophthalmus aquosus Mitchill, were exposed for 60 days to 5 or 10 μg 1 −1 mercury and gill samples were examined by scanning electron microscopy. The response of the gill epithelium was different at the two levels of mercury exposure. The number of chloride cell apical pits and gill filaments bearing ‘cratered’ epithelial cells increased at the 5‐μg 1 −1 level and decreased at the higher exposure level. Focal swellings demonstrated a dose‐dependent relationship, their numbers being greatest at the higher exposure level. Marked fragmentation of pavement cell microridge patterns and swelling of the respiratory epithelial cells was evident at the 10‐μg 1 −1 exposure level.