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

Publication details

All authors or editorsMonk, 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 seriesJournal of Animal Ecology



Publication year2023

Publication date16/10/2023


Issue number12

Pages range2333-2347


Publication countryUnited Kingdom

Publication languageEnglish


Research data linkhttps://doi.org/10.5061/dryad.pk0p2ngv6

Publication open accessOpenly available

Publication channel open accessPartially open access channel

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


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.

KeywordsfishesAtlantic codbehaviouranimal behaviournutritiondiets

Free keywordsacoustic telemetry; Atlantic cod; individual trophic niche; marine reserves; stable isotopes

Contributing organizations

Related projects

Ministry reportingYes

Reporting Year2023

JUFO rating3

Last updated on 2024-03-07 at 01:26