Data from: Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes ...

• Main Authors: Strøm, John Fredrik, Bøhn, Thomas, Skjæraasen, Jon Egil, Gjelland, Karl Øystein, Karlsen, Ørjan, Johansen, Torild, Hanebrekke, Tanja, Bjørn, Pål Arne, Olsen, Esben Moland
• Format: Dataset
• Language: English
• Published: Dryad 2023
• Subjects: FOS Biological sciences; behavioural variation; ecotype interactions; fisheries management; Arctic; Arctic cod; atlantic cod; Gadus morhua; Northeast Arctic cod
• Online Access: https://dx.doi.org/10.5061/dryad.cnp5hqc9n; https://datadryad.org/stash/dataset/doi:10.5061/dryad.cnp5hqc9n

Movement diversity within species represent an important, but often neglected, component of biodiversity that affects ecological and genetic interactions, as well as the productivity of exploited systems. By combining individual tracking data from acoustic telemetry with novel genetic analyses, we describe the movement diversity of two Atlantic cod Gadus morhua ecotypes in two high-latitude fjord systems: the highly migratory Northeast Arctic cod (NEA cod) that supports the largest cod fishery in the world, and the more sedentary Norwegian coastal cod, which is currently in a depleted state. As predicted, coastal cod displayed a higher level of fjord residency than NEA cod. Of the cod tagged during the spawning season, NEA cod left the fjords permanently to a greater extent and earlier compared to coastal cod, which to a greater extent remained resident and left the fjords temporarily. Despite this overall pattern, horizontal movements atypical for the ecotypes were common with some NEA cod remaining within ...