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Coded Wire Tags (coded + wire_tag)
Selected AbstractsLong-term retention of coded wire tags in juvenile Arctic charr Salvelinus alpinusFISHERIES MANAGEMENT & ECOLOGY, Issue 3 2006I. KOLARI Abstract, A hatchery experiment was organised to find out if the high loss rate of coded wire tags, noticed in connection with an Arctic charr Salvelinus alpinus (L.) restocking programme, was size-dependent and also to test head moulds for future taggings. Six moulds made by Northwest Marine Technology Inc. and five moulds made at the Finnish Game and Fisheries Research Institute were used. A total of 100 charr were tagged with standard-length coded wire tags using each mould. One-summer old charr at tagging were held for 534 days and two-summer old charr for 320 days. The tag loss rate varied between 0% and 54% and was negatively related to the size of the charr at tagging. The high loss rate was connected with the poor alignment of some moulds, such that a large proportion of the tags were located in the nasal cavity instead of the nasal cartilage. Testing of the moulds and careful grading of the fish for tagging is emphasised, especially if Arctic charr smaller than 20 g in weight are to be tagged. [source] The effect of temperature on mortality in small perch marked with coded wire tagsJOURNAL OF FISH BIOLOGY, Issue 4 2006H. Dörner Mortality of small (60,100 mm total length) perch Perca fluviatilis after marking with coded wire tags in relation to water temperature (6ˇ9, 14ˇ2, 17ˇ8 and 22ˇ6° C) was experimentally tested and exclusively occurred within the first day of the experiments. Moreover, mortality rates were generally low with a maximum of 4%. No increased mortality at higher water temperatures was observed. [source] | ||||||||||