About the Authors

Timothy B. Grabowski

t.grabowski@ttu.edu

Affiliations Institute of Biology, University of Iceland, Reykjavík, Iceland, U.S. Geological Survey, Texas Cooperative Fish and Wildlife Research Unit, Texas Tech University, Lubbock, Texas, United States of America

Vilhjálmur Thorsteinsson

Affiliation Marine Research Institute (Hafrannsóknastofnunin), Reykjavík, Iceland

Bruce J. McAdam

Affiliation Institute of Biology, University of Iceland, Reykjavík, Iceland

Guđrún Marteinsdóttir

Affiliation Institute of Biology, University of Iceland, Reykjavík, Iceland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TBG GM VT. Performed the experiments: VT. Analyzed the data: TBG BJM. Contributed reagents/materials/analysis tools: VT. Wrote the paper: TBG BJM GM VT.