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Use of implantable pellets to administer low levels of methyl mercury to fish

January 1, 1999

Implantable pellets of methyl mercury chloride were tested in Nile Tilapia (Oreochromis niloticus) to appraise the effectiveness of the method for chronic studies of mercury. Two dosing regimes of 15 and 1.5 grams/CH3HgCl pellet (test 1) and 1 and 0.1 grams/pellet (test 2-3) of methyl mercury chloride were used in three tests. Additional pellets containing only matrix were used as controls. The pellets were inserted into the peritoneal cavity along with a microchip for identification. Three methods of incision closure: sutures and two types of surgical glue, were tested. Pellets used in test one released the dose too fast, resulting in premature death of the fish. Results from test 2 and 3 show blood mercury concentrations over time and tissue levels at necropsy consistent with dose suggesting that this is a viable method of dosing fish.

Citation Information

Publication Year 1999
Title Use of implantable pellets to administer low levels of methyl mercury to fish
DOI
Authors B.S. Arnold, C.H. Jagoe, T. S. Gross
Publication Type Conference Paper
Publication Subtype Conference Paper
Series Title
Series Number
Index ID 70021140
Record Source USGS Publications Warehouse
USGS Organization