The tagging is considered extremely important because it can provide better estimates of natural mortality rates (M) by age or age-groups and/or total mortality (Z), particularly when a conventional tagging activity is carried out for several years with a high intensity. In addition, it can provide also growth estimates. Electronic tagging is usually use to investigate the species habitat utilisation and movement (migration) patterns.
The conventional tagging activities were mostly developed in Phase 2, whereas electronic tagging has been the choice thereafter. Tagging within GBYP has covered a wide geographical area of the Atlantic Ocean.
The tagging activity is revised and refined every year, depending on the difficulties and opportunities, but also on the budget availability.
Tag awareness activities, which are essential for the success of large tagging activities, have been developed by the GBYP for improving the tag recovery and reporting rates. The latter is not only important from the scientific point of view, but also from the economic one, considering the high investments associated to these activities, mainly in the case of the electronic tagging, in which the cost of purchase and deployment of each individual mark amount to several thousands of euros.
Accordingly, the Programme carried out a wide awareness campaign including improved rewards, up to 1000€ for electronic tags and 50€ or Programme T-shirts in the case of conventional tags, as well the participation in an annual lottery with awards of 1000€ for the 1st prize and of 500€ for the 2nd and 3rd. Several types of posters in 12 languages and other advertising material have been distributed to many collaborative entities. Tag awareness videos in seven languages are also available in youtube ICCAT GBYP tag recovery channel, while high quality videos and spots can be requested for free directly to firstname.lastname@example.org.
If you need any additional awareness material, please contact email@example.com.