John Fleng Steffensen
Professor
Marine Biology
Strandpromenaden 5
3000 Helsingør
- 1981
- Published
BLOOD-OXYGEN TRANSPORT IN THE LEMON SHARK
BUSHNELL, P., Steffensen, John Fleng, LUTZ, P. & OIKARI, A., 1981, In: FEDERATION PROCEEDINGS. 3, p. 431-431Research output: Contribution to journal › Conference article › Research › peer-review
- Published
The relative importance of skin oxygen uptake in the naturally buried plaice, Pleuronectes platessa, exposed to graded hypoxia.
Steffensen, John Fleng, Lomholt, J. P. & Johansen, K., 1981, In: Respiratory Physiology & Neurobiology. 44, 3, p. 269-75 6 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 1982
- Published
Gill ventilation and oxygen extraction during graded hypoxia in 2 ecologically distinct species of flatfish, the flounder (Platichthys flesus) and the plaice (Pleuronectes platessa)
Steffensen, John Fleng, LOMHOLT, J. & JOHANSEN, K., 1982, In: Environmental Biology of Fishes. 7, 2, p. 157-164Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Increases in arterial blood oxygen during exercise in the lemon shark (Negaprion brevirostris)
BUSHNELL, P., LUTZ, P., Steffensen, John Fleng, OIKARI, A. & GRUBER, S., 1982, In: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology. 147, 1, p. 41-47Research output: Contribution to journal › Journal article › Research › peer-review
- 1983
- Published
Energetic cost of active branchial ventilation in the sharksucker, Echeneis naucrates.
Steffensen, John Fleng & Lomholt, J. P., 1983, In: Journal of Experimental Biology. 103, p. 185-92 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 1984
- Published
An automated swimming respirometer
Steffensen, John Fleng, JOHANSEN, K. & BUSHNELL, P., 1984, In: Comparative Biochemistry and Physiology A. 79, 3, p. 437-440Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 225-235Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Ventilation and oxygen consumption in the hagfish, Myxine glutinosa L.
Steffensen, John Fleng, JOHANSEN, K., SINDBERG, C., Sørensen, J. H. & Møller, J. L., 1984, In: Journal of Experimental Marine Biology and Ecology. 84, 2, p. 173-178Research output: Contribution to journal › Journal article › Research › peer-review
- 1985
- Published
Cutaneous oxygen uptake and its relation to skin blood perfusion and ambient salinity in the plaice, Pleuronectes platessa.
Steffensen, John Fleng & Lomholt, J. P., 1985, In: Comparative Biochemistry and Physiology - Part A: Comparative Physiology. 81, 2, p. 373-5 2 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The Transition between Branchial Pumping and Ram Ventilation in Fishes: Energetic Consequences and Dependence on Water Oxygen Tension
Steffensen, John Fleng, 1985, In: Journal of Experimental Biology. 114, p. 141-150Research output: Contribution to journal › Journal article › Research › peer-review
- 1986
- Published
In vivo Observations on a Specialized Microvasculature, the Primary and Secondary Vessels in Fishes
Steffensen, John Fleng, LOMHOLT, J. & VOGEL, W., 1986, In: Acta Zoologica. 67, 4, p. 193-200Research output: Contribution to journal › Journal article › Research › peer-review
- 1987
- Published
An analysis of the energetic cost of the branchial and cardiac pumps during sustained swimming in trout
FARRELL, A. & Steffensen, John Fleng, 1987, In: {FISH PHYSIOLOGY AND BIOCHEMISTRY}. 4, 2, p. 73-79Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Control of red cell volume and pH in trout: Effects of isoproterenol, transport inhibitors, and extracellular pH in bicarbonate/carbon dioxide-buffered media
NIKINMAA, M., Steffensen, John Fleng, TUFTS, B. & RANDALL, D., 1987, In: Journal of Experimental Zoology. Part A: Ecological Genetics and Physiology (Print Edition). 242, 3, p. 273-281Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Coronary ligation reduces maximum sustained swimming speed in Chinook salmon, Oncorhynchus tshawytscha.
Farrell, A. P. & Steffensen, John Fleng, 1987, In: Comparative Biochemistry and Physiology - Part A: Comparative Physiology. 87, 1, p. 35-7 2 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Effect of burst swimming and adrenaline infusion on O2 consumption and CO2 excretion in rainbow trout, Salmo gairdneri.
Steffensen, John Fleng, Tufts, B. L. & Randall, D. J., 1987, In: Journal of Experimental Biology. 131, p. 427-34 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 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
- 1989
- Published
Some errors in respirometry of aquatic breathers: How to avoid and correct for them
Steffensen, John Fleng, 1989, In: Fish Physiology & Biochemistry. 6, 1, p. 49-59Research output: Contribution to journal › Journal article › Research › peer-review
- 1990
- Published
Effects of exercise training and coronary ablation on swimming performance, heart size, and cardiac enzymes in rainbow trout, Oncorhynchus mykiss
FARRELL, A., JOHANSEN, J., Steffensen, John Fleng, MOYES, C., WEST, T. & SUAREZ, R., 1990, In: Canadian Journal of Zoology. 68, 6, p. 1174-1179Research output: Contribution to journal › Journal article › Research › peer-review
- 1991
- Published
Fisk foretrækker lavere temperatur under iltsvind
Schurmann, H. & Steffensen, John Fleng, 1991, In: Vand & Miljø. 9, p. 434-437Research output: Contribution to journal › Journal article › Communication
- Published
The influence of Hypoxia on the Preferred Temperature of Rainbow Trout Oncorhynchus mykiss
Schurmann, H., Steffensen, John Fleng & Lomholt, J. F., 1991, In: Journal of Experimental Biology. 157, p. 75-86Research output: Contribution to journal › Journal article › Research › peer-review
- 1992
- Published
Har fisk et lymfekarsystem?
Lomholt, J. P. & Steffensen, John Fleng, 1992, In: Naturens Verden. 1, p. 15-21Research output: Contribution to journal › Journal article › Communication
- 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. 927-934Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The effect of hypoxia on the preferred temperature of the rainbow trout, Oncorhynchus mykiss, and the Atlantic cod, Gadus morhua
Steffensen, John Fleng & Schurmann, H., 1992, In: Proc.12th Symp.Baltic Mar.Biol., Helsingør, Denmark. p. 157-162Research output: Contribution to journal › Conference article › Research › peer-review
- Published
The secondary vascular system
Steffensen, John Fleng & Lomholt, J. P., 1992, Fish Physiol., XIIA. Academic Press, p. 185-217Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
- Published
Ventilatory and respiratory responses in fish: adaptations to environment
Steffensen, John Fleng, 1992, The Vertebrate Gas Transport Cascade: Adaptations to the environment and Mode of Life. CRC Press, p. 60-71Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
- 1993
- Published
Flight cost and economy of nectar-feeding in tha bat Glossophage soricina (Phyllostomidae: Glossophaginae)
Winter, Y., von Helversen, O., Norgerg, U. M., Kunz, T. H. & Steffensen, John Fleng, 1993, Plant-animal interactions in tropical enviroments. Bonn: Museum Alexander Koenig, p. 167-174Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
- Published
The cost of hovering and forward flight in a nectar-feeding bat, Glossophaga soricina, estimated from aerodynamic theory.
Norberg, U. M., Kunz, T. H., Steffensen, John Fleng, Winter, Y. & von Helversen, O., 1993, In: Journal of Experimental Biology. 182, p. 207-27 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 1994
- Published
Exercise metabolism in two species of cod in arctic waters
Bushnell, P. G., Steffensen, John Fleng, Schurmann, H. & Jones, D. R., 1994, In: Polar Biology. 14, p. 43-48Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 49-54Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Spontaneous swimming activity of Atlantic cod Gadus morhua exposed to graded hypoxia at three temperatures
Schurmann, H. & Steffensen, John Fleng, 1994, In: Journal of Experimental Biology. 197, p. 129-142Research output: Contribution to journal › Journal article › Research › peer-review
- 1995
- Published
Effects of diet on spontaneous locomotor activity and oxygen consumption in Adriatic sturgeon (Acipenser naccarli)
McKenzie, D. J., Piraccini, G., Steffensen, John Fleng, Bolis, C. L., Bronzi, P. & Taylor, E. W., 1995, In: Fish Physiology & Biochemistry. 14 (5), p. 341-355Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Protein synthesis, growth and energetics in larval herring (Clupea harengus) at different feeding regimes
Houlihan, D. F., Pedersen, B. H., Steffensen, John Fleng & Brechin, J., 1995, In: Fish Physiology & Biochemistry. 14 (3), p. 195-208Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Torpor e energética em Beija-flores do Sudeste Brasileiro
Abe, A. S., Bech, C., Steffensen, John Fleng, Berger, M. & Bicodu, J. E. P. W., 1995, In: Museu de Biologia Mello Leitao. Boletim. 2, p. 3-13Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Protein synthesis, growth and energetics in larval herring (Clupea harengus) at different feeding regimes
Houlihan, D. F., Pedersen, B. H., Steffensen, John Fleng & Brechin, J., Jun 1995, In: Fish Physiology & Biochemistry. 14, 3, p. 195-208 14 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Effects of diet on spontaneous locomotor activity and oxygen consumption in Adriatic sturgeon (Acipenser naccarii)
McKenzie, D. J., Piraccini, G., Steffensen, John Fleng, Bolis, C. L., Bronzi, P. & Taylor, E. W., Oct 1995, In: Fish Physiology and Biochemistry. 14, 5, p. 341-355 15 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 1997
- Published
Effects of temperature, hypoxia and activity on the metabolism of juvenile Atlantic cod
Schurmann, H. & Steffensen, John Fleng, 1997, In: Journal of Fish Biology. 50, p. 1166-1180Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 558Research output: Contribution to journal › Conference abstract in journal › Research
- Published
The effects of acute hypoxia and hypercapnia on oxygen consumption of the freshwater European eel
Cruz-Neto, A. P. & Steffensen, John Fleng, 1997, In: Journal of Fish Biology. 50, p. 759-769Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Torpor in Three Species of Brazilian Hummingbirds under Semi-Natural Condition
Bech, C., Steffensen, John Fleng, Merger, M., Bicodu, J. E. P. W. & Abe, A. S., 1997, In: The condor. 99, p. 780-788Research output: Contribution to journal › Journal article › Research › peer-review
- 1998
- Published
Blood Volume, Plasma Volume and Circulation Time in a High-Energy-Demand Teleost, the Yellowfin Tuna (Thunnus Albacares)
Brill, R. W., Cousins, K. L., Jones, D. R., Bushnell, P. G. & Steffensen, John Fleng, 1998, In: Journal of Experimental Biology. 201, 5, p. 647-654Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Energy savings in sea bass swimming in a school: measurements of tail beat frequency and oxygen consumption at different swimming speeds
Herskin, J. & Steffensen, John Fleng, 1998, In: Journal of Fish Biology. 53, 2, p. 366-376Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 755-770Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Swimming performance, venous oxygen tension and cardiac performance of coronary-ligated rainbow trout, Oncorhynchus mykiss, exposed to progressive hypoxia.
Steffensen, John Fleng & Farrell, A. P., 1998, In: Comparative Biochemistry and Physiology A. 119, 2, p. 585-92 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 1999
- Published
The influence of dietary fatty acid composition on the respiratory and cardiovascular physiology of Adriatic sturgeon (Acipenser naccarii): a review
McKenzie, D., Piraccini, G., Agnisola, C., Steffensen, John Fleng, Bronzi, P., Bolis, C., Tota, B. & Taylor, E., 1999, In: Journal of Applied Ichthyology. 15, 4-5, p. 265-269Research output: Contribution to journal › Journal article › Research › peer-review
- 2000
- Published
Effects of dietary fatty acid composition on metabolic rate and responses to hypoxia in the European eel (Anguilla anguilla)
McKenzie, D. J., Piraccini, G., Piccolella, M., Steffensen, John Fleng, Bolis, C. L. & Taylor, E. W., 2000, In: Fish Physiology & Biochemistry. 22, 4, p. 281-296Research output: Contribution to journal › Journal article › Research › peer-review
- Published
The effect of progressive hypoxia on swimming activity and schooling in Atlantic herring
Domenici, P., Steffensen, John Fleng & Batty, R. S., 2000, In: Journal of Fish Biology. 57, 6, p. 1526-1538Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Tolerance of hypercapnic acidosis by the European eel, Anguilla anguilla
McKenzie, D., Dalla Valle, A., Steffensen, John Fleng & Taylor, E., 2000, In: Journal of Physiology. Suppl. S, p. 282P-283PResearch output: Contribution to journal › Conference abstract in journal › Research
- 2001
- Published
Growth hormone transgenic tilapia (Oreochromis sp.) compensate for increased metabolic rate to preserve exercise performance and hypoxia tolerance
McKenzie, D. J., Martínez, R., Morales, A., Acosta, J., Taylor, E. W., Steffensen, John Fleng & Estrada, M. P., 2001, In: Journal of Physiology. xx, p. 531Research output: Contribution to journal › Conference abstract in journal › Research
- 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. 818-823Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 818-823Research output: Contribution to journal › Journal article › Research › peer-review
ID: 2881
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Embryonic suckling and maternal specializations in the live-bearing teleost Zoarces viviparus
Research output: Contribution to journal › Journal article › Research › peer-review
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1731
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Fast-starting after a breath: air-breathing motions are kinematically similar to escape responses in the catfish Hoplosternum littorale
Research output: Contribution to journal › Journal article › Research › peer-review
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1673
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Pop Up Satellite Tags Impair Swimming Performance and Energetics of the European Eel (Anguilla anguilla)
Research output: Contribution to journal › Journal article › Research › peer-review
Published