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Efficacy of Identifying Stocked Crappies in a Tennessee Reservoir through Oxytetracycline Marking
Author(s) -
Isermann Daniel A.,
Bettoli Phillip W.,
Sammons Steve M.
Publication year - 1999
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8675(1999)019<1122:eoisci>2.0.co;2
Subject(s) - fish <actinopterygii> , biology , oxytetracycline , lepomis macrochirus , otolith , fishery , annulus (botany) , escapement , zoology , botany , microbiology and biotechnology , antibiotics
Oxytetracycline (OTC) immersion was used to identify black‐nosed crappies, a morphological variation of black crappie Pomoxis nigromaculatus, stocked into Normandy Reservoir, Tennessee, during fall 1997. The technique effectively marked 97% of the treated fish. Analysis of one otolith per fish by one reader successfully identified 98% of marked and unmarked fish in a blind test. Marks were formed before annulus formation and were not obscured by annulus‐related autofluorescence, suggesting that OTC can be effectively used late in the year (Oct and Nov) in Tennessee.