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Feasibility of Oxytetracycline Marking Fingerling White Bass
Author(s) -
Perrion Matthew A.,
Schall Benjamin J.,
Schoenebeck Casey W.,
Koupal Keith D.,
Sweet Bryan D.
Publication year - 2016
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1080/15222055.2016.1201554
Subject(s) - morone , fishery , biology , bass (fish) , oxytetracycline , zoology , veterinary medicine , broodstock , toxicology , fish <actinopterygii> , aquaculture , medicine , antibiotics , microbiology and biotechnology
Chemical batch marks with compounds such as oxytetracycline hydrochloride (OTC) can be useful for estimates of stock contribution. However, no information currently exists on the feasibility of marking fingerling White Bass Morone chrysops with OTC. The objectives of this study were to determine the level of mortality on White Bass when immersed in solutions of OTC at 0, 350, and 500 mg/L at intervals up to 96 h postimmersion and to assess the quality of marks on sagittal otoliths 14 d postmarking. A total of 900 White Bass (29–41 mm) were utilized with 100 fish used in three replicates per treatment. No differences in mortality rates were detected among control and treatment groups up to 96 h postmarking. Cumulative mortality rates were ≤6.7%. Mark visibility was ranked on a scale of 0–3; mean mark score was higher in the 500‐mg/L treatment (2.5) than the 350‐mg/L treatment (2.0). Batch‐marking fingerling White Bass using the 500‐mg/L marking solution provided visible marks and low mortality rates and therefore represents a viable option for biologists seeking to assess stock contribution and year‐class strength.