John Fleng Steffensen

John Fleng Steffensen

Professor

Current research

My research focus on comparative respiratory and circulatory physiology of fish, ranging from questions concerning metabolic cold adaptation in Arctic and Antarctic fish, to possible benefits and problems for fish swimming in schools. In addition I am studying problems related to improving growth of fish in aquaculture, the adaptation of fish to environmental hypoxia and temperature, metabolism and kinematics of swimming fish, and the form and function of the primary and secondary circulatory systems in teleosts. In addition I am studying the biology, physiology and longevity of the Greenland shark.

 

Selected publications

  1. Published

    Adapt, move or die - how will tropical coral reef fishes cope with ocean warming?

    Habary, A., Johansen, J. L., Nay, T. J., Steffensen, John Fleng & Rummer, J. L., 2017, In: Global Change Biology. 23, 2, p. 566-577 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  2. Published

    Eye lens radiocarbon reveals centuries of longevity in the Greenland shark (Somniosus microcephalus)

    Nielsen, J., Hedeholm, R. B., Heinemeier, J., Bushnell, P. G., Christiansen, J. S., Olsen, J., Ramsey, C. B., Brill, R. W., Simon, M., Steffensen, K. F. & Steffensen, John Fleng, 12 Aug 2016, In: Science (New York, N.Y.). 353, 6300, p. 702-4 3 p.

    Research output: Contribution to journalJournal articlepeer-review

  3. Published

    Maximum swimming speeds of sailfish and three other large marine predatory fish species based on muscle contraction time and stride length: a myth revisited

    Svendsen, Morten B.S., Domenici, P., Marras, S., Krause, J., Boswell, K. M., Rodriguez-Pinto, I., Wilson, A. D. M., Kurvers, R. H. J. M., Viblanc, P. E., Finger, J. S. & Steffensen, John Fleng, 2016, In: Biology Open. 5, 10, p. 1415-1419 5 p.

    Research output: Contribution to journalJournal articlepeer-review

  4. Published

    Design and setup of intermittent-flow respirometry system for aquatic organisms

    Svendsen, Morten B.S., Bushnell, P. G. & Steffensen, John Fleng, 2016, In: Journal of Fish Biology. 88, 1, p. 26-50 25 p.

    Research output: Contribution to journalJournal articlepeer-review

  5. Published

    Conservation physiology of marine fishes: state of the art and prospects for policy

    McKenzie, D. J., Axelsson, M., Chabot, D., Claireaux, G., Cooke, S. J., Corner, R. A., De Boeck, G., Domenici, P., Guerreiro, P. M., Hamer, B., Jørgensen, C., Killen, S. S., Lefevre, S., Marras, S., Michaelidis, B., Nilsson, G. E., Peck, M. A., Perez-Ruzafa, A., Rijnsdorp, A. D., Shiels, H. A. & 9 others, Steffensen, John Fleng, Svendsen, J. C., Svendsen, Morten B.S., Teal, L. R., van der Meer, J., Wang, T., Wilson, J. M., Wilson, R. W. & Metcalfe, J. D., 2016, In: Conservation Physiology. 4, 1, 20 p., cow046.

    Research output: Contribution to journalReviewpeer-review

  6. Published

    Hypoxia-induced metastasis model in embryonic zebrafish

    Rouhi, P., Jensen, L. D., Cao, Z., Hosaka, K., Lanne, T., Wahlberg, E., Steffensen, John Fleng & Cao, Y., 1 Dec 2010, In: Nature Protocols (Print). 5, 12, p. 1911-1918 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  7. Published

    Hypoxia-induced retinopathy model in adult zebrafish

    Cao, Z., Jensen, L. D., Rouhi, P., Hosaka, K., Lanne, T., Steffensen, John Fleng, Wahlberg, E. & Cao, Y., 1 Dec 2010, In: Nature Protocols (Print). 5, 12, p. 1903-1910 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  8. Published

    Nitric oxide permits hypoxia-induced lymphatic perfusion by controlling arterial-lymphatic conduits in zebrafish and glass catfish

    Dahl Ejby Jensen, L., Cao, R., Hedlund, E., Söll, I., Lundberg, J. O., Hauptmann, G., Steffensen, John Fleng & Cao, Y., 2009, In: Proceedings of the National Academy of Science of the United States of America. 106, 43, p. 18408-13 5 p.

    Research output: Contribution to journalJournal articlepeer-review

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