The non-returning of fish tags recovered by Norwegian fishermen
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In addition to 5 N.Kr. reward for each returned cod, coalfish, haddock, halibut and catfish tag, Fiskeridirektoratets Havforskningsinstitutt introduced in 1959 an annual drawing of 1000, 500 and 250 N.Kr. for tags, Norwegian and foreign, returned by Norwegian fishermen. The extra reward system was in use during 1959-1961. After the extra rewards were introduced, the reporting rate of tags returned the same year as recovered and one or more years afterwards has increased. The non-returning rate of tags recovered by Norwegian fishermen in 1947-1957 was estimated to be at least 4-6 percent and the indication from the calculations is that the non-returning rate is decreasing with the continuous advertising and with people in the fishing ports to receive the recovered tags.
SeriesFiskeridirektoratets skrifter, Serie Havundersøkelser
vol 13 no 6