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Comparative study of toxic lead effect on gill and haemoglobin of tilapia fish
Author(s) -
Tabche L. M.,
Martinez C. M.,
SanchezHidalgo E.
Publication year - 1990
Publication title -
journal of applied toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.784
H-Index - 87
eISSN - 1099-1263
pISSN - 0260-437X
DOI - 10.1002/jat.2550100309
Subject(s) - lability , tilapia , oreochromis , lead exposure , aquaculture of tilapia , chemistry , fish <actinopterygii> , toxicity , lead poisoning , membrane , biology , toxicology , biochemistry , medicine , fishery , cats , organic chemistry , psychiatry
This study was designed to determine the 72‐h LC 50 of lead for tilapia fish ( Oreochromis hornorum ), as well as the effect of exposure to sublethal lead concentrations (15, 23, 31, 39 and 47% of the LC 50 ) on gill tissue lysosomal membranes of the fish and the haemoglobin concentration in blood. The LC 50 value was found to be 202 mg Pb 2+ l −1 . Exposure to sublethal lead concentrations for 72 h showed significant increases in the lability of gill lysosomal membranes, measured by the release of acid phosphatase. Changes in membrane lability and in haemoglobin concentration were dependent on the amount of lead used during the exposure. We considered that the membrane lability is an adequate parameter to assay for monitoring lead contamination in water, because it is more sensitive than the haemoglobin concentration in blood.