Behaviour of Atlantic salmon (Salmo salar L) recorded by data storage tagsin the NE Atlantic-implications for interception by pelagic trawls ...

• Main Authors: Holm, Marianne, Holst, Jens C., Jacobsen, Jan A., Sturlaugsson, Johannes
• Format: Conference Object
• Language: unknown
• Published: ASC 2006 - Theme session Q 2024
• Subjects: Fisheries and aquaculture; Technologies and data; Atlantic salmon; Nordic Seas; Northeast Atlantic; Salmo salar
• Online Access: https://dx.doi.org/10.17895/ices.pub.25259206; https://ices-library.figshare.com/articles/conference_contribution/Behaviour_of_Atlantic_salmon_Salmo_salar_L_recorded_by_data_storage_tagsin_the_NE_Atlantic-implications_for_interception_by_pelagic_trawls/25259206

No abstracts are to be cited without prior reference to the author.In a project carried out in the Nordic Seas (Northeast Atlantic) in 2002 - 2004, 413 Atlantic salmon (Salmo salar L.) were tagged with data storage tags (DST) either logging temperature and depth (StarOddi, Milli) or just temperature (Dallas semiconductor, iButton). The main aims were to study various marine life history traits of salmon, such as winter habitats, diurnal patterns of vertical migration, feeding activities. Another aim was to collect salmon behaviour data with relevance for issues related to by-catch of salmon in pelagic fisheries. In this paper we focus on possible implications of the diurnal depth distribution of salmon in relation to catchability of salmon in sampling trawls versus commercial fisheries. Five DSTs were returned from fishermen. Four of these were Milli-tags and are used in this presentation. Time from release to capture ranged from 48 - 128 days. The DSTs logged data at alternating intervals of 1, 5, 30, 60 ...