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Exchange of Zinc with Environmental Solutions by the Brown Bullhead
Author(s) -
Joyner Timothy
Publication year - 1961
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1961)90[444:eozwes]2.0.co;2
Subject(s) - zinc , ictalurus , gill , zoology , chemistry , fish <actinopterygii> , biology , catfish , fishery , organic chemistry
Abstract Juvenile brown bullheads (Ictalurus nebulosus) exposed to dilute solutions of zinc chloride tagged with zinc 65 showed an initially rapid uptake of zinc for the first several hours followed by a short period of decline. After about 12 hours the accumulation of zinc proceeded at a reduced rate. The highest concentrations in the tissues were found in viscera and gills, with lower amounts in the skin, muscle, and bone. Swallowed water does not contribute appreciably to the zinc in the gastro‐intestinal tract. Nearly half of the zinc accumulated after prolonged immersion in a 6‐p.p.m. solution was lost during the first day after transfer of the fish to flowing, fresh water, and only slightly more after 7 days. There was no apparent damage to the fish from exposure to zinc concentrations as high as 12 p.p.m. for 14 days, nor from the effects of the radiation from the zinc 65 in the solutions.