Does catch-and-release angling alter the migratory behaviour of Atlantic salmon?

作者：Jensen Jenny L A^*; Halttunen Elina; Thorstad Eva B; Naesje Tor F; Rikardsen Audun H

来源：Fisheries Research, 2010, 106(3): 550-554.

DOI：10.1016/j.fishres.2010.08.013

• Salmo salar
• Catch-and-release
• Telemetry
• Tagging effect
• Fisheries management

Electronic tracking studies have recently focused on the potential negative effects of catch-and-release (C&R) angling in Atlantic salmon (Salmo solar L) Common for these studies is that the fish were tagged between C&R and the effects of C&R can thus not be separated from the extra handling effects associated with the tagging procedure In addition reference groups and information on the behaviour prior to C&R is not available In this study 95 homing multi-sea-winter Atlantic salmon were tagged with radio transmitters in the fjord before entering the River Alta Northern Norway and thereafter manually tracked until the spawning period Ten of these salmon were caught and released by anglers in the river All ten fish survived the angling event and nine were observed in known spawning areas during the spawning No difference in migratory behaviour prior to or after C&R was observed between caught and released fish and a reference group Individuals both among the C&R fish and the reference group showed downstream movements and migratory stops associated with C&R in previous studies In spite of making studies logistically more challenging a

• 出版日期2010-12