Zdzisław Zakęś, Maciej Rożyński, Marek Hopko, Mirosław Szczepkowski, Krzysztof Wunderlich
ABSTRACT. The aim of the study was to determine the impact visible implant elastomer (VIE) tag color and time following implantation had on tag readability. Pikeperch spawners (body weight > 1 kg) were tagged with four fluorescent colored VIE tags: orange (VIE-P), green (VIE-Z), blue (VIE-N), and celadon (VIE-S). VIE visibility and durability were monitored seven months (reading 1), 19 months (reading 2), and 24 months (reading 3) after tagging. A three-stage scale was used to rank tag readability: rank 2 - tag readily visible in daylight; rank 1 – tag readily visible under UV light; rank 0 – tag not visible even when using a UV flashlight. All of the VIE tags were visible at all of the readings in all of the fish that had been tagged. The period of time elapsed between tagging and reading had a significant impact on the rank of tag readability, and a significant difference was noted between the readings 2 and readings 1 and 3. No significant differences were noted between the first (after 7 months) and third (after 24 months) readings. Significant differences in VIE tag readability were confirmed among all the VIE tag colors analyzed. Only with the orange tags (VIE-P) were all the tags visible in daylight (rank 2) in all tagged fish at all readings. The worst quality was noted in tag group VIE-Z. Tagging with fluorescent VIE can be used in research and husbandry work conducted with selects and spawners of this species.
Słowa kluczowe: visible implant elastomer (VIE) tags, VIE tag color, VIE tag retention, pikeperch, tagging
Przyjęto po recenzji 18.03.2016 r.