IMIS - Marine Onderzoeksgroepen | ||||
BFTDK: Decadal tracking of Atlantic Bluefin Tuna
Citatie
Aarestrup, K. 2018. Decadal tracking of Atlantic Bluefin Tuna. https://marineinfo.org/id/dataset/7872
Contact:
Aarestrup, Kim ;
Beschikbaarheid:
![]() Beschrijving
In 1930-50 bluefin tuna were commertially fished in Denmark and Sweeden, but catches gradually dissapear in the next decades. Same happened to sport fishing. After decades of absence, bluefin tuna have recently been sighted again in the Northeastern Atlantic, inter alia off the coast of Bohuslän and in the Skagerrak and Kattegat. In 2016 and 2017, large schools of several hundred large individuals were observed. These adult fish hunted mackerel and herring during late summer and autumn. The reasons for the return and origin of the bluefin tuna in the North Sea-Skagerrak-Kattegat are unknown. This project will use electronic tags to help understand its migration patterns and behavior, avoid unwanted bycatch and support sustainable management of the stock. Attaching long life acoustic tags holds the potential to observe transatlantic migration as well as repeatability of the migratory pattern, by using the OTN network of receivers. meer
In 1930-1950, bluefin tuna were commercially fished in Denmark and Sweden. Landings were several hundred tonnes per year, with a peak of 2000t in Sweden in 1942. Fishing continued in the next two decades and then it gradually disappeared. Sport fishing for bluefin tuna in the Kattegat and the Sound continued until the 1960s. But then, bluefin tuna catches became increasingly rare. After decades of absence, bluefin tuna have recently been sighted again in the Northeastern Atlantic, inter alia off the coast of Bohuslän and in the Skagerrak and Kattegat. In 2016 and 2017, large schools of several hundred large individuals were observed. These adult fish hunted mackerel and herring during late summer and autumn. The reasons for the return and origin of the bluefin tuna in the North Sea-Skagerrak-Kattegat are unknown. This project will use electronic tags to help understand its migration patterns and behavior, avoid unwanted bycatch and support sustainable management of the stock. Attaching long life acoustic tags holds the potential to observe transatlantic migration as well as repeatability of the migratory pattern, by using the OTN network of receivers. Scope Thema's: Biologie, Biologie > Ecologie - biodiversiteit, Biologie > Vis, Visserij > Visstocks/vangsten/merken Kernwoorden: Marien/Kust, Acoustic data, Acoustic telemetry, Akoestische Telemetrie, Bluefin, Bluefin tuna, Commercial fishing, Fish behaviour, Fisheries Management, Kattegat S, Migraties, Migration patterns, North sea, Northeast atlantic, Ocean migration, Sport fishing, Swedish skagerrak coast, Tracking; het volgen, Tuna fisheries, Vismigratie, ANE, Sweden, Pisces, Scombridae Rafinesque, 1815, Thunnus South, 1845, Thunnus thynnus (Linnaeus, 1758) Geografische spreiding Spreiding in de tijd
Vanaf 24 Augustus 2018 [Gestart] Taxonomic coverage
Parameter
Fish detections Methode
Fish detections: Acoustic telemetry Bijdrage door
Technical University of Denmark; National Institute of Aquatic Resources (DTU Aqua), meer
Gerelateerde datasets
Maakt deel uit van: European Tracking Network (ETN) data, meer
URL's
Dataset informatie: Dataset status: Gestart
Data type: Data
Data oorsprong: Onderzoek: veldonderzoek
Metadatarecord aangemaakt: 2021-09-10
Informatie laatst gewijzigd: 2023-11-30
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