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Nephrocalcinosis in Nile Tilapia from a Recirculation Aquaculture System: A Case Report
Author(s) -
Chen ChunYao,
Wooster Gregory A.,
Getchell Rodman G.,
Bowser Paul R.,
Timmons Michael B.
Publication year - 2001
Publication title -
journal of aquatic animal health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 52
eISSN - 1548-8667
pISSN - 0899-7659
DOI - 10.1577/1548-8667(2001)013<0368:nintfa>2.0.co;2
Subject(s) - nile tilapia , nephrocalcinosis , alkalinity , aquaculture , oreochromis , sodium bicarbonate , fishery , biology , tilapia , fish <actinopterygii> , endocrinology , chemistry , kidney , organic chemistry
Nile tilapia Oreochromis niloticus were presented to the Fish Disease Diagnostic Laboratory with the complaint of chronic low‐level mortalities in a recirculation aquaculture system. Microscopic examination of kidneys revealed moderate to severe nephrocalcinosis. Salient information from the case history was the utilization of agricultural‐grade lime (calcium carbonate) to maintain alkalinity in the water of the culture system for the 4 weeks immediately preceding the case submission. Management of the system was changed to include the use of sodium bicarbonate to maintain system alkalinity. Severe levels of nephrocalcinosis have not been observed since that change was instituted.