John Fleng Steffensen

John Fleng Steffensen

Professor

Aktuel forskning

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 interested in the biology, physiology and age of the Greenland shark, Somniosus microcephalus.

Udvalgte publikationer

  1. Udgivet

    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, I: Global Change Biology. 23, 2, s. 566-577 12 s.

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

  2. Udgivet

    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, I: Science (New York, N.Y.). 353, 6300, s. 702-4 3 s.

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

  3. Udgivet

    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, I: Biology Open. 5, 10, s. 1415-1419 5 s.

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

  4. Udgivet

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

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

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

  5. Udgivet

    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 flere, 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, I: Conservation Physiology. 4, 1, 20 s., cow046.

    Publikation: Bidrag til tidsskriftReviewfagfællebedømt

  6. Udgivet

    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, I: Nature Protocols (Print). 5, 12, s. 1911-1918 8 s.

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

  7. Udgivet

    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, I: Nature Protocols (Print). 5, 12, s. 1903-1910 8 s.

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

  8. Udgivet

    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, I: Proceedings of the National Academy of Science of the United States of America. 106, 43, s. 18408-13 5 s.

    Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

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