Northwest Fisheries Science Center

Display All Information

Document Type: Chapter or Section
Center: NWFSC
Document ID: 5851
Type of Book: Technical
Section or Chapter Title: Equipment, methods, and an automated data-entry station for PIT tagging
Book Title: Fish-Marking Techniques
Author: Earl F. Prentice, Thomas A. Flagg, Clinton Scott McCutcheon, D. F. Brastow, D. C. Cross
Editor: Nick C. Parker, Albert E. Giorgi, Roy C. Heidinger, Douglas B. Jester, Eric D. Prince, Gary A. Winans (Eds.)
Publication Year: 1990
Publisher: American Fisheries Society Symposium 7. Bethesda, Maryland
Volume: 7
Pages: 335-340

A miniaturized PIT (passive integrated transponder) tag, developed by private industry, was adapted for tagging juvenile salmonids by the U.S. National Marine Fisheries Service.  The PIT tag enables individual fish to be identified by a unique 10-digit alphanumeric code read in situ with a detector-decoding system.  The body cavity proved to be a satisfactory site for tag implantation, and techniques were tested that gave up to 100% tag retention and high fish survival.  Hand-held and stationary automatic tag injectors were developed that allowed tagging of 150-300 fish/h.  A computer-based system was designed to automatically record PIT-tag code and associated information, such as fish length and weight.  A discussion of tagging technique and required equipment is presented.

Notes: AFS Symposium 7, Fish-Marking Techniques, is out of print.