Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve ...

• Main Authors: Monk, Christopher, Power, Michael, Freitas, Carla, Harrison, Philip, Heupel, Michelle, Kuparinen, Anna, Moland, Even, Simpfendorfer, Colin, Villegas Ríos, David, Olsen, Esben Moland
• Format: Software
• Language: unknown
• Published: Zenodo 2023
• Subjects: acoustic telemetry; Atlantic cod; diet specialization; Marine reserves; Stable isotopes; atlantic cod; Gadus morhua
• Online Access: https://dx.doi.org/10.5281/zenodo.8363155; https://zenodo.org/record/8363155

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. We tested whether behaviour type and diet covary in a protected population of Atlantic cod, Gadus morhua . 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 δ 13 C and δ 15 N values). We further investigated whether behaviour and diet could have survival costs. We found cod with shorter diel vertical migration distances fed at higher trophic levels. Cod δ 13 C and δ 15 N 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. The links between diet and diel vertical migration highlight that ... : Funding provided by: Research Council of Norway Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100005416 Award Number: CODSIZE 294926Funding provided by: Natural Sciences and Engineering Research Council of Canada Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000038 Award Number: Funding provided by: HORIZON EUROPE Marie Sklodowska-Curie Actions Crossref Funder Registry ID: http://dx.doi.org/10.13039/100018694 Award Number: 793627Funding provided by: Spanish National Research Council Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100003339 Award Number: Funding provided by: Academy of Finland Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100002341 Award Number: 317495Funding provided by: European Research Council Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000781 Award Number: 770884 ...