Sonke Johnsen

Professor in the Department of Biology

Office: 
301 Bio Sci Bldg, Durham, NC 27708
Campus Box: 
Duke Box 90338, Durham, NC 27708-0338
Phone: 
(919) 660-7321

Education

  • Ph.D., University of North Carolina at Chapel Hill 1996

  • B.A., Swarthmore College 1988

Zylinski, S, and Johnsen, S. "Visual cognition in deep-sea cephalopods: What we don’t know and why we don’t know it." In Cephalopod Cognition, 223-241. January 1, 2014. Full Text

Marshall, J, and Johnsen, S. "Camouflage in marine fish." In Animal Camouflage: Mechanisms and Function, 186-211. January 1, 2011. Full Text

Schweikert, LE, Fitak, RR, and Johnsen, S. "De novo transcriptomics reveal distinct phototransduction signaling components in the retina and skin of a color-changing vertebrate, the hogfish (Lachnolaimus maximus)." Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology (February 28, 2018). Full Text

Fitak, RR, and Johnsen, S. "Bringing the analysis of animal orientation data full circle: model-based approaches with maximum likelihood." The Journal of experimental biology 220, no. Pt 21 (November 2017): 3878-3882. Full Text

Bagge, LE, Kinsey, ST, Gladman, J, and Johnsen, S. "Transparent anemone shrimp (Ancylomenes pedersoni) become opaque after exercise and physiological stress in correlation with increased hemolymph perfusion." The Journal of experimental biology 220, no. Pt 22 (November 2017): 4225-4233. Full Text

Marshall, J, and Johnsen, S. "Fluorescence as a means of colour signal enhancement." Philosophical transactions of the Royal Society of London. Series B, Biological sciences 372, no. 1724 (July 2017). (Review) Full Text

Taylor, BK, Johnsen, S, and Lohmann, KJ. "Detection of magnetic field properties using distributed sensing: a computational neuroscience approach." Bioinspiration & biomimetics 12, no. 3 (May 19, 2017): 036013-. Full Text

Caves, EM, Sutton, TT, and Johnsen, S. "Visual acuity in ray-finned fishes correlates with eye size and habitat." The Journal of experimental biology 220, no. Pt 9 (May 2017): 1586-1596. Full Text Open Access Copy

Cronin, TW, Fasick, JI, Schweikert, LE, Johnsen, S, Kezmoh, LJ, and Baumgartner, MF. "Coping with copepods: do right whales (Eubalaena glacialis) forage visually in dark waters?." Philosophical transactions of the Royal Society of London. Series B, Biological sciences 372, no. 1717 (April 2017). Full Text

Fitak, RR, Wheeler, BR, Ernst, DA, Lohmann, KJ, and Johnsen, S. "Candidate genes mediating magnetoreception in rainbow trout (Oncorhynchus mykiss)." Biology letters 13, no. 4 (April 2017). Full Text

Thomas, KN, Robison, BH, and Johnsen, S. "Two eyes for two purposes: in situ evidence for asymmetric vision in the cockeyed squids Histioteuthis heteropsis and Stigmatoteuthis dofleini." Philosophical transactions of the Royal Society of London. Series B, Biological sciences 372, no. 1717 (April 2017). Full Text

Pages

Thomas, KN, Vecchione, M, and Johnsen, S. "What big eyes you have: Eye allometry and visual range in deep-sea cephalopods." March 2017.

Caves, EM, Brandley, NC, and Johnsen, S. "Visual acuity in fish: the effects of eye morphology, environment, and ecology." March 2016.

Pages

Selected Grants

The Sigsbee Deep Expedition- Exploration of light in the water column below 1000m awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2017 to 2019

Long-range Geomagnetic Navigation in Sea Turtles: An Interdisciplinary Approach to awarded by University of North Carolina - Chapel Hill (Principal Investigator). 2014 to 2019

Bioluminescence in the Deep-sea Benthos II awarded by Nova Southeastern University (Principal Investigator). 2015

Dynamic Camouflage in Benthic and Pelagic Cephalopods: awarded by Office of Naval Research (Principal Investigator). 2009 to 2015

Collaborative Research: Midwater animal models: Optical measurement of metabolic transitions awarded by National Science Foundation (Principal Investigator). 2009 to 2013

Operation Deep-Scope 2007: Characterization of cliff ecosystems using new technologies awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2007 to 2009

Collaborative Research: Transparency: Ultrastructural and biochemical specialization in muscular and ocular tissues awarded by National Science Foundation (Principal Investigator). 2005 to 2009

Selective Invisibility Based on the Differing Temporal Resolutions of Sea Turtles and Billfish Under Low Light Condition awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2005 to 2006

Mathematical Model of the Visual Abilities of Sea Turtles and Pelagic Fishes awarded by National Oceanic and Atmospheric Administration (Principal Investigator). 2003