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Showing results 1-50 of 51
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2020
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1. |
Svalheim, Ragnhild Aven; Aas-Hansen, Øyvind; Heia, Karsten; Karlsson-Drangsholt, Anders; Olsen, Stein Harris; Johnsen, Helge K.. Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua). PLOS ONE 2020 ;Volume 15.(6) p. - NOFIMA UiT
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2019
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2. |
Rozenfeld, Christoffer; García-Carpintero, Victor; Pérez, Luz; Gallego, Victor; Herranz-Jusdado, Juan Germán; Tveiten, Helge; Johnsen, Helge K.; Fontaine, Romain David; Weltzien, Finn-Arne; Cañizares, Joaquín; Asturiano, Juan F.; Penaranda, David Sanchez. Cold seawater induces early sexual developmental stages in the BPG axis of European eel males. BMC Genomics 2019 ;Volume 20. p. - NOFIMA UiT NMBU
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3. |
Svalheim, Ragnhild Aven; Aas-Hansen, Øyvind; Heia, Karsten; Drangsholt-Karlsson, Anders; Olsen, Stein Harris; Johnsen, Helge K.. Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua). bioRxiv 2019 NOFIMA UiT
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2018
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4. |
Johnsen, Hanne; Moghadam, Hooman; Robinson, Nicholas Andrew; Andersen, Øivind; Jørgensen, Even Hjalmar; Johnsen, Helge K.; Bæhr, Vegar Jakobsen; Tveiten, Helge. Stimulering av stressrespons i tidlige livsstadier hos laks har positiv effekt på vekst senere i livet. Havbruk 2018 – Havbruk i samfunnet; 2018-04-18 - 2018-04-20 NOFIMA UiT
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5. |
Karlsson-Drangsholt, Anders; Svalheim, Ragnhild Aven; Aas-Hansen, Øyvind; Olsen, Stein Harris; Midling, Kjell Øivind; Breen, Michael; Grimsbø, Endre; Johnsen, Helge K.. Recovery from exhaustive swimming and its effect on fillet quality in haddock (Melanogrammus aeglefinus). Fisheries Research 2018 ;Volume 197. p. 96-104 HAVFORSK UiT NOFIMA
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2017
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6. |
Johnsen, Hanne; Moghadam, Hooman; Robinson, Nick; Andersen, Øivind; Jørgensen, Even Hjalmar; Johnsen, Helge K.; Bæhr, Vegar J.; Tveiten, Helge. IMPACTS OF EARLY LIFE STRESS ON THE METHYLOME AND TRANSCRIPTOME OF ATLANTIC SALMON. Aquaculture Europe 2017; 2017-10-17 - 2017-10-20 UiT NOFIMA
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7. |
Moghadam, Hooman; Johnsen, Hanne; Robinson, Nick; Andersen, Øivind; Jørgensen, Even Hjalmar; Johnsen, Helge K.; Bæhr, Vegar Jakobsen; Tveiten, Helge. Impacts of Early Life Stress on the Methylome and Transcriptome of Atlantic Salmon. Scientific Reports 2017 ;Volume 7. p. 1-11 UiT NMBU NOFIMA
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8. |
Svalheim, Ragnhild Aven; Karlsson-Drangsholt, Anders; Olsen, Stein Harris; Johnsen, Helge K.; Aas-Hansen, Øyvind. Effects of exhaustive swimming and subsequent recuperation on flesh quality in unstressed Atlantic cod (Gadus morhua). Fisheries Research 2017 ;Volume 193. p. 158-163 UiT NOFIMA
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2016
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9. |
Bender, Morgan Lizabeth; Frantzen, Marianne; Vieweg, Ireen; Falk-Petersen, Inger-Britt; Johnsen, Helge K.; Rudolfsen, Geir; Tollefsen, Knut Erik; Dubourg, Paul; Nahrgang, Jasmine. Effects of chronic dietary petroleum exposure on reproductive development in polar cod (Boreogadus saida). Norwegian Environmental Toxicology Symposium; 2016-10-24 NIVA UiT NMBU
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10. |
Bender, Morgan Lizabeth; Frantzen, Marianne; Vieweg, Ireen; Falk-Petersen, Inger-Britt; Johnsen, Helge Kreutzer; Rudolfsen, Geir; Tollefsen, Knut Erik; Dubourg, Paul; Nahrgang, Jasmine. Effects of chronic dietary petroleum exposure on reproductive development in polar cod (Boreogadus saida). Aquatic Toxicology 2016 ;Volume 180. p. 196-208 UiT NIVA AKVAPLAN
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2015
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11. |
Knudsen, Rune; Johnsen, Helge K.; Sæther, Bjørn-Steinar; Siikavuopio, Sten Ivar. Divdergent growth patterns between juveniles of two sympatric Arctic charr morphs with contrasting depth gradient niche preferences. Aquatic Ecology 2015 ;Volume 49.(1) p. 33-42 NOFIMA UiT
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2014
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12. |
Jørgensen, Even Hjalmar; Johnsen, Helge K.. Rhythmic life of the Arctic charr: Adaptations to life at the edge. Marine Genomics 2014 ;Volume 14. p. 71-81 UiT
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13. |
Karlsson, Anders; Aas-Hansen, Øyvind; Johnsen, Helge K.; Jensen, Tonje; Eilertsen, Karl-Erik; Peruzzi, Stefano. Recovery from Exhaustive, Anaerobic Exercise in Triploid and Diploid Atlantic Cod. AFS 2014 Annual Meeting. From Fisheries Research to Management; 2014-08-17 - 2014-08-21 NOFIMA UiT
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14. |
Ludvigsen, Stian; Stenklev, Niels Chr.; Johnsen, Helge K.; Laukli, Einar; Matre, Dagfinn; Aas-Hansen, Øyvind. Evoked potentials in the Atlantic cod following putatively innocuous and putatively noxious electrical stimulation: A minimally invasive approach. Fish Physiology & Biochemistry 2014 ;Volume 40.(1) p. 173-181 STAMI NOFIMA UiT
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15. |
Siikavuopio, Sten Ivar; Sæther, Bjørn-Steinar; Johnsen, Helge K.; Evensen, Tor Hatten; Knudsen, Rune. Temperature preference of juvenile Arctic charr originating from different thermal environments. Aquatic Ecology 2014 ;Volume 48.(3) p. 313-320 UiT NOFIMA
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16. |
Svalheim, Ragnhild Aven; Karlsson, Anders; Olsen, Stein Harris; Johnsen, Helge K.; Aas-Hansen, Øyvind. Recuperation of Atlantic cod (Gadus morhua) following exhaustive exercise in a swim tunnel. 44th WEFTA Conference; 2014-06-09 - 2014-06-11 NOFIMA UiT
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17. |
Svalheim, Ragnhild Aven; Karlsson, Anders; Olsen, Stein Harris; Johnsen, Helge K.; Aas-Hansen, Øyvind. Recuperation of Atlantic cod (Gadus morhua) following exhaustive exercise in a swim tunnel – How can knowledge on swimming physiology improve quality. ICBF (International Congress on the Biology of Fishes); 2014-08-07 NOFIMA UiT
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18. |
Svalheim, Ragnhild Aven; Karlsson, Anders; Ursin, Jonil T.; Johnsen, Helge K.; Olsen, Stein Harris; Aas-Hansen, Øyvind. Swimming fish to improve welfare and quality. 2nd FitFish Workshop on the Swimming Physiology of Fish; 2014-10-10 - 2014-10-10 NOFIMA UiT
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2011
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19. |
Damsgård, Børge; Bjørklund, Frode; Johnsen, Helge K.; Toften, Hilde. Short- and long-term effects of fish density and specific water flow on the welfare of Atlantic cod, Gadus morhua. Aquaculture 2011 ;Volume 322-323. p. 184-190 NOFIMA UiT
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2010
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20. |
Tveiten, Helge; Bjørn, Pål Arne; Johnsen, Helge K.; Finstad, B; McKinley, R. S.. Effects of the sea louse Lepeophtheirus salmonis on temporal changes in cortisol, sex steroids, growth and reproductive investment in Arctic charr Salvelinus alpinus. Journal of Fish Biology 2010 ;Volume 76.(10) p. 2318-2341 UiT NINA NOFIMA
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2009
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21. |
Ojima, Daisuke; Pettersen, Roger Johan; Wolkers, Judith; Johnsen, Helge K.; Jørgensen, Even Hjalmar. Growth hormone and cortisol treatment stimulate seawater tolerance in both anadromous and landlocked Arctic charr. Comparative Biochemistry and Physiology A 2009 ;Volume 153.(4) p. 378-385 UiT
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2007
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22. |
Strand, Jo Espen Tau; Johnsen, Helge Kreutzer; Arnesen, Arne Mikal. Comparison of parr-smolt transformation in hatchery reared offspring of one domesticated and two wild populations of Atlantic salmon (Salmo salar L.). Aquaculture 2007 ;Volume 273.(2-3) p. 205-256 UiT NOFIMA
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2005
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23. |
Aas-Hansen, Øyvind; Vijayan, Mathilakath M; Johnsen, Helge K; Cameron, Colin; Jørgensen, Even Hjalmar. Resmoltification in wild, anadromous Arctic char (Salvelinus alpinus): a survey of osmoregulatory, metabolic, and endocrine changes preceding annual seawater migration. Canadian Journal of Fisheries and Aquatic Sciences 2005 ;Volume 62. p. 195-204 UiT NOFIMA
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2004
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24. |
Frantzen, Marianne; Arnesen, Arne Mikal; Damsgård, Børge; Tveiten, Helge; Johnsen, Helge K. Effects of photoperiod on sex steroids and gonad maturation in Arctic charr. Aquaculture 2004 ;Volume 240. p. 561-574 UiT NOFIMA
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25. |
Frantzen, Marianne; Damsgård, Børge; Tveiten, Helge; Moriyama, Shunsuke; Iwata, M; Johnsen, Helge K.. Effects of fasting on temporal changes in plasma concentrations of sex steroids, growth hormone and insulin-like growth factor I, and reproductive investment in Arctic charr. Journal of Fish Biology 2004 ;Volume 65. p. 1526-1542 NOFIMA UiT
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26. |
Frantzen, Marianne; Damsgård, Børge; Tveiten, Helge; Moriyama, Shunsuke; Iwata, Munehico; Johnsen, Helge K. Effects of fasting on temporal changes in plasma concentrations of sex steroids, growth hormone and insulin-like growth factor I, and reproductive investment in Arctic charr. 5th International Symposium of Fish Endocrinology; 2004-09-05 - 2004-09-09 NOFIMA UiT
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27. |
Frantzen, Marianne; Damsgård, Børge; Tveiten, Helge; Moriyama, Shunsuke; Iwata, Munehico; Johnsen, Helge K. Effects of fastng on temporal changes in plasma concentrations of sex steroids, growth hormone and insuline-like growth factor I, and reproductive investment in Arctic charr. Journal of Fish Biology 2004 ;Volume 65. p. 1526-1542 UiT
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2003
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28. |
Aas-Hansen, Øyvind; Johnsen, Helge K; Vijayan, Mathilakath M; Jørgensen, Even Hjalmar. Development of seawater tolerance and concurrent hormonal changes in fed and fasted Arctic charr at two temperatures. Aquaculture 2003 ;Volume 222. p. 135-148 UiT
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2001
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29. |
Tveiten, Helge; Johnsen, Helge K.. Thermal influences on temporal changes in plasma sex steroids and reproductive development in female common wolffish.. Journal of Fish Biology 2001 ;Volume 59. p. 175-178 UiT
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30. |
Tveiten, Helge; Solevåg, Stein Eric; Johnsen, Helge K.. Holding temperature during the spawning season influences timing of final maturation and egg quality in common wolffish (Anarhichas lupus L.).. Journal of Fish Biology 2001 ;Volume 58. p. 374-385 NTNU UiT
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2000
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31. |
Johnsen, Helge K.; Sæther, Bjørn-Steinar; Eliassen, Robert; Larsen, Jørund S. Effects of photoperiod manipulation on the development of seawater tolerance in Arctic charr (Salvelinus alpinus L.).. Aquaculture 2000 ;Volume 189. p. 177-188 UiT
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32. |
Tveiten, Helge; Scott, Alexander P.; Johnsen, Helge K.. Plasma-sulfated C21-steroids increaseduring the preovulatory period in female common wolffish and are influenced by temperature during vitellogenesis.. General and Comparative Endocrinology 2000 ;Volume 117. p. 464-473 UiT
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1999
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33. |
Johnsen, Helge K.; Tveiten, Helge; Willassen, Nils Peder; Arnesen, Arne Mikal. Arctic charr (Salvelinus alpinus) vitellogenin: development and validation of an enzyme-linked immunosorbent assay (ELISA).. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 1999 ;Volume 124. p. 355-362 NOFIMA UiT
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34. |
Tveiten, Helge; Johnsen, Helge K.. Temperature experienced during vitellogenesis influences ovarian maturation and the timing of ovulation in common wolffish.. Journal of Fish Biology 1999 ;Volume 55. p. 809-819 UiT
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35. |
Tveiten, Helge; Johnsen, Helge K.; Schulz, Rüdiger. Temperature experienced by female wolffish (Anarhichas lupus L.) during vitellogenesis: sex steroid profiles and influences on the timing of ovulation.. 6th International Symposium on Reproductive Physiology of Fish; 1999-07-04 - 1999-07-09 UiT
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1998
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36. |
Arnesen, Arne Mikal; Johnsen, Helge K.; Mortensen, Atle; Jobling, Malcolm. Acclimation of Atlantic salmon (Salmo salar) smolts to "cold" seawater following direct transfer from freshwater.. Aquaculture 1998 ;Volume 168. p. 351-367 NOFIMA UiT
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37. |
Eliassen, R.; Johnsen, Helge K.; Mayer, Ian; Jobling, Malcolm. Contrasts in osmoregulatory capacity of two Arctic charr, Salvelinus alpinus (L.), strains from northern Norway.. Aquaculture 1998 ;Volume 168. p. 255-269 NMBU UiT
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38. |
Tveiten, Helge; Mayer, Ian; Johnsen, Helge K.; Jobling, Malcolm. Sex steroids, growth and condition of Arctic charr broodstock during an annual cycle.. Journal of Fish Biology 1998 ;Volume 53. p. 714-727 NMBU UiT
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1997
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39. |
Frantzen, Marianne; Johnsen, Helge K; Mayer, Ian. Gonadal development and sex steroids in a female Arctic charr broodstock. Journal of Fish Biology 1997 ;Volume 51.(4) p. 697-709 UiT
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1996
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40. |
Tveiten, Helge; Johnsen, Helge K.; Jobling, Malcolm. Influence of maturity status on the annual cycles of feeding and growth in Arctic charr, Salvelinus alpinus (L.).. Journal of Fish Biology 1996 ;Volume 48. p. 910-924 UiT
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1995
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41. |
Jobling, Malcolm; Johnsen, Helge K.; Pettersen, Gerd Wibeche; Henderson, R. J.. Effects of temperature on reproductive development in Arctic charr, Salvelinus alpinus (L.).. Journal of Thermal Biology 1995 ;Volume 20. p. 157-165 UiT
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42. |
Sæther, Bjørn-Steinar; Johnsen, Helge K.; Jobling, Malcolm. Influence of photoperiod on feeding and growth of Arctic charr. Special Publications (European Aquaculture Society) 1995 ;Volume 23. p. 265-166 UiT NOFIMA
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1992
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43. |
Johnsen, Helge K.; Helle, Karen B.; Lundberg, Jan M; Hökfelt, Tomas; Folkow, Lars. Distribution and vasomotor effects of neuropeptides in the angularis oculi and facial veins of reindeer.. Comparative Biochemistry and Physiology - Part A: Comparative Physiology 1992 ;Volume 101. p. 269-276 UiT
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1991
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44. |
Christiansen, Jørgen Schou; Johnsen, Helge K.; Jobling, Malcolm. The combined effects of ambient temperature and enforced sustained swimming activity on body temperatures of arctic charr (salvelinus alpinus L.). Journal of Thermal Biology 1991 ;Volume 16.(6) p. 351-355 UiT
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1988
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45. |
Johnsen, Helge K.; Folkow, Lars. Vascular control of brain cooling in reindeer.. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1988 ;Volume 254. p. 730-739 UiT
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1987
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46. |
Johnsen, Helge K.; Blix, Arnoldus S; Mercer, James B.; Bolz, K.-D.. Selective cooling of the brain in reindeer.. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1987 ;Volume 253. p. 848-853 UiT
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1985
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47. |
Johnsen, Helge K.; Blix, Arnoldus S; Jørgensen, Leif; Mercer, James B.. Vascular basis for regulation of nasal heat exchange in reindeer.. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1985 ;Volume 249. p. 617-623 UiT
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48. |
Johnsen, Helge K.; Rognmo, Arne; Nilssen, Kjell J.; Blix, Arnoldus S. Seasonal changes in the relative importance of different avenues of heat loss in resting and running reindeer.. Acta Physiologica Scandinavica 1985 ;Volume 123. p. 73-79 NTNU UiT
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49. |
Mercer, James B.; Johnsen, Helge K.; Blix, Arnoldus S; Hotvedt, ragnar. Central control of expired air temperature and other thermoregulatory effectors in reindeer.. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1985 ;Volume 248. p. 679-685 UiT
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1984
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50. |
Nilssen, Kjell J.; Johnsen, Helge K.; Rognmo, Arne; Blix, Arnoldus S. Heart rate and energy expenditure in resting and running Svalbard and Norwegian reindeer.. American Journal of Physiology. Regulatory Integrative and Comparative Physiology 1984 ;Volume 246. p. 963-967 NTNU UiT
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