An evaluation of the technique of tagging alfonsino and bluenose with detachable hook tags
1989
Horn, P.L.
A description is given of a two-phase prgramme in which alfonsino (Beryx splendens) and bluenose (Hyperoglyphe antarctica) were tagged with streamers attached to fish hooks. A pilot study determined the most suitable gear configuration and tag design for use in the second phase. Fish were then tagged on six commercial alfonsino-bluenose fishing grounds between Gisborne and Cape Palliser. The tagged hooks were fished on trot lines in the usual way, but were attached to snoods with traces of 5.5 kg breaking strain nylon that broke when the fish took the hook and struggled to escape. About 2000 bluenose, but few alfonsino, were tagged. Tag returns up to 31 May 1989 show that bluenose are fairly sedentary in the short term. Possible applications and drawbacks of the technique are discussed
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Эту запись предоставил Ministry for Primary Industries