A1 Journal article (refereed)
Atlantic cod individual spatial behaviour and stable isotope associations in a no‐take marine reserve (2023)

Monk, C. T., Power, M., Freitas, C., Harrison, P. M., Heupel, M., Kuparinen, A., Moland, E., Simpfendorfer, C., Villegas‐Ríos, D., & Olsen, E. M. (2023). Atlantic cod individual spatial behaviour and stable isotope associations in a no‐take marine reserve. Journal of Animal Ecology, 92(12), 2333-2347. https://doi.org/10.1111/1365-2656.14014

JYU authors or editors

Kuparinen, Anna

Publication details

All authors or editors: Monk, Christopher T.; Power, Michael; Freitas, Carla; Harrison, Philip M.; Heupel, Michelle; Kuparinen, Anna; Moland, Even; Simpfendorfer, Colin; Villegas‐Ríos, David; Olsen, Esben M.

Journal or series: Journal of Animal Ecology

ISSN: 0021-8790

eISSN: 1365-2656

Publication year: 2023

Publication date: 16/10/2023

Volume: 92

Issue number: 12

Pages range: 2333-2347

Publisher: Wiley

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1111/1365-2656.14014

Research data link: https://doi.org/10.5061/dryad.pk0p2ngv6

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/90187

Abstract

1. Foraging is a behavioural process and, therefore, individual behaviour and diet are theorized to covary. However, few comparisons of individual behaviour type and diet exist in the wild.
2. We tested whether behaviour type and diet covary in a protected population of Atlantic cod, Gadus morhua.
3. Working in a no-take marine reserve, we could collect data on natural behavioural variation and diet choice with minimal anthropogenic disturbance. We inferred behaviour using acoustic telemetry and diet from stable isotope compositions (expressed as δ13C and δ15N values). We further investigated whether behaviour and diet could have survival costs.
4. We found cod with shorter diel vertical migration distances fed at higher trophic levels. Cod δ13C and δ15N values scaled positively with body size. Neither behaviour nor diet predicted survival, indicating phenotypic diversity is maintained without survival costs for cod in a protected ecosystem.
5. The links between diet and diel vertical migration highlight that future work is needed to understand whether the shifts in this behaviour during environmental change (e.g. fishing or climate), could lead to trophic cascades.

Keywords: fishes; Atlantic cod; behaviour; animal behaviour; nutrition; diets

Free keywords: acoustic telemetry; Atlantic cod; individual trophic niche; marine reserves; stable isotopes

Fields of science: