This program covers a large
study area, and involves many individuals from both the scientific
and fishery communities.
With such high numbers of individuals involved
in this program, standard protocols are crucial to ensure consistency.
GMRI has developed standard protocols based on the experience of
program partners and other experienced tagging programs. The protocols
include the following elements:
(regular) and blue(high-reward) T-bar anchor tags;
Tagging technique: all fishermen
and scientists follow a standard tagging protocol;
Data sheets: the same data
sheets are used throughout the program;
Database: all the data is
entered into a single database, using a state-of-the-art online
database which has been tailor-made for this program.
uses T-bar anchor tags, manufactured by Hallprint
Pty. This simple tag is easily inserted into the cod,
close to the dorsal fin.
The T-bar “anchors”
between the bones which run up into the first dorsal fin.
Each tag is printed with a unique number,
the name of the program, our toll-free
number and our web
Tags are inserted using an
Avery Dennison tag fastening gun (model # 08958).
This tagging technique has
been used on a variety of fish species as it is a cost-effective
and efficient means of tagging large numbers of fish.
A considerable proportion of
tagged cod are double-tagged; this was 10%
of all cod released between March 2003 and September 2004.
Since October 2004 the Program double-tags 100% of its tagged
releases. This technique allows us to monitor for tag-loss.
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Cod Tagging Program. All rights reserved. Website designed by ESK