About the Authors

Ketil Malde

ketil.malde@imr.no

Affiliation Institute of Marine Research, Bergen, Norway

Tomasz Furmanek

Affiliation Institute of Marine Research, Bergen, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KM. Performed the experiments: KM TF. Analyzed the data: KM. Wrote the paper: KM.