John Fleng Steffensen

John Fleng Steffensen

Professor

ORCID: 0000-0002-4477-8039

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  1. Published

    Intraspecific variation in aerobic and anaerobic locomotion: gilthead sea bream (Sparus aurata) and Trinidadian guppy (Poecilia reticulata) do not exhibit a trade-off between maximum sustained swimming speed and minimum cost of transport

    Svendsen, J. C., Tirsgård, B., Cordero, G. A. & Steffensen, John Fleng, 2015, In: Frontiers in Physiology. 6, 12 p., 43.

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    Intraspecific variation in thermal tolerance differs between tropical and temperate fishes

    Nati, J. J. H., Svendsen, M. B. S., Marras, S., Killen, S. S., Steffensen, John Fleng, McKenzie, D. J. & Domenici, P., 2021, In: Scientific Reports. 11, 8 p., 21272.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Intussusceptive Vascular Remodeling Precedes Pathological Neovascularization

    Ali, Z., Mukwaya, A., Biesemeier, A., Ntzouni, M., Ramsköld, D., Giatrellis, S., Mammadzada, P., Cao, R., Lennikov, A., Marass, M., Gerri, C., Hildesjö, C., Taylor, M., Deng, Q., Peebo, B., del Peso, L., Kvanta, A., Sandberg, R., Schraermeyer, U., Andre, H. & 5 others, Steffensen, John Fleng, Lagali, N., Cao, Y., Kele, J. & Jensen, L. D., 2019, In: Arteriosclerosis, Thrombosis, and Vascular Biology. 39, 7, p. 1402-1418

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Ion exchange mechanisms on the erythrocyte membrane of the aquatic salamander, Amphiuma tridactylum.

    Tufts, B. L., Nikinmaa, M., Steffensen, John Fleng & Randall, D. J., 1987, In: Journal of Experimental Biology. 133, p. 329-38 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Kinematics and energetic benefits of schooling in the labriform fish, striped surfperch Embiotoca lateralis

    Johansen, J. L., Vaknin, R., Steffensen, John Fleng & Domenici, P., 2010, In: Marine Ecology - Progress Series. 420, p. 221-229 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Komparative studier af hvid- og rødblodede antarktiske fisks fysiologi og kardiovasculære anatomi.

    Steffensen, John Fleng, 2008, Dansk Ekspeditionsfond - Galathea 3 2006-2007. 1. ed. Dansk Ekspeditionsfond Galathea 3 og Thaning & Appel, p. 200-204

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  7. Published

    Lacunae rostralis: A new structure on the rostrum of sailfish Istiophorus platypterus

    Häge, J., Hansen, M. J., Pacher, K., Dhellemmes, F., Domenici, P., Steffensen, John Fleng, Breuker, M., Krause, S., Hildebrandt, T. B., Fritsch, G., Bach, P., Sabarros, P. S., Zaslansky, P., Mahlow, K., Schauer, M., Müller, J. & Krause, J., 2022, In: Journal of Fish Biology. 100, 5, p. 1205-1213 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Larval developmental rate, metabolic rate and future growth performance in Atlantic salmon

    Serrano, J. V., Aberg, M., Gjoen, H. M., Steffensen, John Fleng & Hyglund, E., 2009, In: Comparative Biochemistry and Physiology A. 2, Suppl. 1, p. S140

    Research output: Contribution to journal › Conference abstract in journal › Research

  9. Published

    Laser speckle contrast imaging for monitoring changes in microvascular blood flow

    Ambrus, R., Strandby, R. B., Svendsen, Lars Bo, Achiam, Michael Patrick, Steffensen, John Fleng & Svendsen, M. B. S., 2016, In: European Surgical Research. 56, 3-4, p. 87-96 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Latency of mechanically stimulated escape responses in the Pacific spiny dogfish, Squalus suckleyi

    Schakmann, M., Becker, V., Søgaard, M., Johansen, J. L., Steffensen, John Fleng & Domenici, P., 2021, In: Journal of Experimental Biology. 224, 6 p., jeb230698.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Lethal oxygen levels at different temperatures and the preferred temperature during hypoxia of the Atlantic cod Gadus morhua L.

    Schurmann, H. & Steffensen, John Fleng, 1992, In: Journal of Fish Biology. 41, 6, p. 927-934

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Linking hunting weaponry to attack strategies in sailfish and striped marlin

    Hansen, M. J., Krause, S., Breuker, M., Kurvers, R. H. J. M., Dhellemmes, F., Viblanc, P. E., Müller, J., Mahlow, C., Boswell, K., Marras, S., Domenici, P., Wilson, A. D. M., Herbert-Read, J. E., Steffensen, John Fleng, Fritsch, G., Hildebrandt, T. B., Zaslansky, P., Bach, P., Sabarros, P. S. & Krause, J., 2020, In: Proceedings of the Royal Society B: Biological Sciences. 287, 1918, 9 p., 20192228.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Local Adaptation to Altitude Underlies Divergent Thermal Physiology in Tropical Killifishes of the Genus Aphyosemion

    McKenzie, D., Estivales, G., Svendsen, J. C., Steffensen, John Fleng, Agnèse, J. & Nudds, R. L., 2013, In: P L o S One. 8, 1

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Macromolecular capillary permeability of three species of fish.

    Bushnell, P., Steffensen, John Fleng, Brill, R. & Jones, D., 1997, In: The FASEB Journal. 3, p. 558

    Research output: Contribution to journal › Conference abstract in journal › Research

  15. Published

    Maximum salinity tolerance and osmoregulatory capabilities of European perch Perca fluviatilis populations originating from different salinity habitats

    Christensen, E. A. F., Grosell, M. & Steffensen, John Fleng, 2019, In: Conservation Physiology. 7, 1, p. 1-5 coz004.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. 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, M. 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 journal › Journal article › Research › peer-review

  17. Published

    Metabolic aspects of torpor in hummingbirds

    Bech, C. & Steffensen, John Fleng, 2006, In: Tung wu hsüeh pao. 52(Suppl.), p. 397-400

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Metabolic cold adaptation of polar fish based on measurements of aerobic oxygen consumption: fact or artefact? Artefact!

    Steffensen, John Fleng, 2002, In: Comparative Biochemistry and Physiology A. 132, 4, p. 789-95 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Model of Oxygen Conditions within Aquaculture Sea Cages

    Bergsson, H., Svendsen, M. B. S. & Steffensen, John Fleng, 2023, In: Biology. 12, 11, 17 p., 1408.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Muscle dynamics in fish during steady swimming

    Shadwick, R., Steffensen, John Fleng, Katz, S. & Knower, T., 1998, In: Integrative and Comparative Biology. 38, 4, p. 755-770

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. 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 journal › Journal article › Research › peer-review

  22. Published

    Not so fast: swimming behavior of sailfish during predator-prey interactions using high-speed video and accelerometry

    Marras, S., Noda, T., Steffensen, John Fleng, Svendsen, M. B. S., Krause, J., Wilson, A. D. M., Kurvers, R. H. J. M., Herbert-Read, J., Boswell, K. M. & Domenici, P., 2015, In: Integrative and Comparative Biology. 55, 4, p. 719-727 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Oil gland and oil pores in billfishes: in search of a function

    Dhellemmes, F., Hansen, M. J., Bouet, S. D., Videler, J. J., Domenici, P., Steffensen, John Fleng, Hildebrandt, T., Fritsch, G., Bach, P., Sabarros, P. S., Krüger, A., Kurvers, R. H. J. M. & Krause, J., 2020, In: The Journal of Experimental Biology. 223, 7 p., jeb224956.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Optimum temperature of a northern population of Arctic charr (Salvelinus alpinus) using heart rate Arrhenius breakpoint analysis

    Hansen, A. K., Byriel, David Bille, R. Jensen, M., Steffensen, John Fleng & Svendsen, M. B. S., 2017, In: Polar Biology. 40, 5, p. 1063-1070 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Oxygen Consumption and Swimming Performance in Hypoxia-Acclimated Rainbow Trout Salmo Gairdneri

    BUSHNELL, P., Steffensen, John Fleng & JOHANSEN, K., 1984, In: Journal of Experimental Biology. 113, p. 225-235

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Oxygen conditions in fish schools

    Steffensen, John Fleng, 2005, In: Comparative Biochemistry and Physiology A. 3, p. S167

    Research output: Contribution to journal › Conference abstract in journal › Research

  27. Published

    Oxygen consumption in four species of teleosts from Greenland: no evidence of metabolic cold adaptation

    Steffensen, John Fleng, Bushnell, P. G. & Schurmann, H., 1994, In: Polar Biology. 14, 1, p. 49-54

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Oxygen consumption of East Siberan cod: no support for the metabolic cod adaptation theory

    Steffensen, John Fleng, Jordan, A. D. & Jungersen, M., 2001, In: Journal of Fish Biology. 59, p. 818-823

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Oxygen consumption of East Siberian cod: no support for the metabolic cold adaptation theory

    Jordan, Anders Drud, Jungersen, M. & Steffensen, John Fleng, 2001, In: Journal of Fish Biology. 59, 4, p. 818-823

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Oxygen consumption of fish exposed to hypoxia: Are they all oxyregulators or are any oxyconformers?

    Steffensen, John Fleng, 2007, Fish Physiology, Toxicology, and Water Quality: Proceedings of the Ninth International Symposium, Capri, Italy, April 24-28, 2006. Brauner, C. J., Suvajdzic, K., Nilsson, G. & Randall, D. (eds.). Ecosystems Research Divison Athens, Georgia, p. 239-244

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  31. Published

    Oxygen dynamics around buried lesser sandeels Ammodytes tobianus (Linnaeus 1785): mode of ventilation and oxygen requirements.

    Behrens, J. W., Stahl, H. J., Steffensen, John Fleng & Glud, R. N., 2007, In: Journal of Experimental Biology. 210, Pt 6, p. 1006-14 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Partition of aerobic and anaerobic swimming costs and their correlation to tail-beat frequency and burst activity in Sparus aurata

    Steffensen, John Fleng, 2012.

    Research output: Contribution to conference › Conference abstract for conference › Research

  33. Published

    Partition of aerobic and anaerobic swimming costs related to gait transitions in a labriform fish

    Svendsen, J. C., Tudorache, C., Jordan, A. D., Steffensen, John Fleng, Aarestrup, K. & Domenici, P., 2010.

    Research output: Contribution to conference › Conference abstract for conference › Research

  34. Published

    Partition of aerobic and anaerobic swimming costs related to gait transitions in a labriform swimmer

    Svendsen, J. C., Tudorache, C., Jordan, A. D., Steffensen, John Fleng, Aarestrup, K. & Domenici, P., 2010, In: Journal of Experimental Biology. 213, Pt 13, p. 2177-83 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Partitioning the metabolic scope: the importance of anaerobic metabolism and implications for the oxygen- and capacity-limited thermal tolerance (OCLTT) hypothesis

    Ejbye-Ernst, R., Michaelsen, T. Y., Tirsgård, B., Wilson, J. M., Jensen, L. F., Steffensen, John Fleng, Pertoldi, C., Aarestrup, K. & Svendsen, J. C., 2016, In: Conservation Physiology. 4, 1, 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Pectoral fin beat frequency predicts oxygen consumption during spontaneous activity in a labriform swimming fish (Embiotoca lateralis)

    Tudorache, C., Jordan, Anders Drud, Svendsen, J. C., Domenici, P., DeBoeck, G. & Steffensen, John Fleng, 2009, In: Environmental Biology of Fishes. 84, p. 121-127 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Phylogenetic position of the cryopelagic codfish genus Arctogadus Drjagin, 1932 based on partial mitochondrial cytochrome b sequences

    Møller, Peter Rask, Jordan, Anders Drud, Gravlund, P. & Steffensen, John Fleng, 2002, In: Polar Biology. 25, 5, p. 342-349

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Physiological effects of temperature on Greenland halibut Reinhardtius hippoglossoides shows high vulnerability of Arctic stenotherms to global warming

    Ruth, A., Svendsen, M. B. S., Nygaard, R., Christensen, E. A. F., Bushnell, P. G. & Steffensen, John Fleng, 2023, In: Journal of Fish Biology. 103, 3, p. 675-683 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Physiological energetics may contribute to competitive exclusion in African killifish (Aphyosemion spp.).

    McKenzie, D. J., Svendsen, J. C., Steffensen, John Fleng & Agnese, J., 2009, In: Comparative Biochemistry and Physiology A. 2, Supplement 1, p. S150 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  40. Published

    Physiological mechanisms underlying individual variation in tolerance of food deprivation in juvenile European sea bass, Dicentrarchus labrax

    McKenzie, D. J., Vergnet, A., Chatain, B., Vandeputte, M., Desmarais, E., Steffensen, John Fleng & Guinand, B., 2014, In: Journal of Experimental Biology. 217, 18, p. 3283-3292 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Physiological traits of the Greenland shark Somniosus microcephalus obtained during the TUNU-Expeditions to Northeast Greenland

    Di Prisco, G., Ademollo, N., Ancora, S., Christiansen, J. S., Coppola, D., Corsolini, S., Ferrando, S., Ghigliotti, L., Giordano, D., Lynghammar, A., Nielsen, J., Pisano, E., Russo, R., Steffensen, John Fleng & Verde, C., 2021, Life in Extreme Environments: Insights in Biological Capability. Di Prisco, G., Edwards, H. G. M., Elster, J. & Huiskes, A. H. L. (eds.). Cambridge University Press, p. 11-41 (Ecological Reviews).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  42. Published

    Physiology and behaviour of Atlantic cod (Gadus morhua) with different haemoglobin genotypes: the effect of hypoxia

    Steffensen, John Fleng, 2005, In: Comparative Biochemistry and Physiology A. 3, p. S99

    Research output: Contribution to journal › Conference abstract in journal › Research

  43. Published

    Plasma FITC-dextran exchange between the primary and secondary circulatory systems in the Atlantic cod, Gadus Morhua.

    Fischer, C. & Steffensen, John Fleng, 2008, In: Fish Physiology & Biochemistry. 34, 3, p. 245-9 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Plasma osmolality and oxygen consumption of perch Perca fluviatilis in response to different salinities and temperatures

    Christensen, E. A. F., Svendsen, M. B. S. & Steffensen, John Fleng, Mar 2017, In: Journal of Fish Biology. 90, 3, p. 819-833 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Polarfisks fysiologiske tilpasninger

    Jordan, Anders Drud & Steffensen, John Fleng, 2006, Arktisk Station 1906 - 2006.: Et centrum for forskning. 1. ed. Danmark: Forlaget Rhodos, p. 286-291.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  46. Published

    Pop Up Satellite Tags Impair Swimming Performance and Energetics of the European Eel (Anguilla anguilla)

    Methling, C., Tudorache, C., Skov, P. V. & Steffensen, John Fleng, 8 Jun 2011, In: P L o S One. 6, 6, p. e20797

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Population ecology, growth, and physico-chemical habitat of anadromous European perch Perca fluviatilis

    Christensen, E. A. F., Svendsen, M. B. S. & Steffensen, John Fleng, 2021, In: Estuarine, Coastal and Shelf Science. 249, 8 p., 107091.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    Preferred temperature of juvenile Atlantic cod Gadus morhua with different haemoglobin genotypes at normoxia and moderate hypoxia.

    Petersen, M. F. & Steffensen, John Fleng, 2003, In: Journal of Experimental Biology. 206, Pt 2, p. 359-64 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Primary versus secondary drivers of foraging activity in sandeel schools (Ammodytes tobianus)

    Van Deurs, M. S. K., Behrens, J. W., Warnar, T. & Steffensen, John Fleng, 2011, In: Marine Biology. 158, 8, p. 1781-1789 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Prolonged SDA and reduced digestive efficiency under elevated CO2 may explain reduced growth in Atlantic cod (Gadus morhua)

    Tirsgård, B., Moran, D. & Steffensen, John Fleng, 2015, In: Aquatic Toxicology. 158, p. 171-180 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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