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Benign Recovery of Coded Wire Tags from Rainbow Trout
Author(s) -
Oven Jackie Heinricher,
Lee Blankenship H.
Publication year - 1993
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(1993)013<0852:brocwt>2.3.co;2
Subject(s) - dorsal fin , rainbow trout , adipose tissue , dorsum , fish <actinopterygii> , fishery , anatomy , fish fin , fin , biology , materials science , biochemistry , composite material
Rainbow trout Oncorhynchus mykiss were tagged with coded wire tags (CWTs) in transparent postocular tissues, dorsal fins, and adipose fins, and were later checked for tag visibility. retention, and benign recoverability. At 266 d after implantation. tags were removed from postocular tissue and adipose fins without apparent harm to the fish. Dorsal tags were removed after 106 d. Fish ranged from 90 mm to 165 mm total length at time of tagging. Tag retention was 96% in postocular tissue and 99% in adipose fins after 238 d and was 97% in dorsal fins after 106 d. Postocular and dorsal fin tags were removed with a magnetized scalpel or modified syringe. Adipose fin tags were removed with a biopsy punch. Benign recovery of CWTs appears to be helpful when it is desirable to keep fish alive.