Environmental endocrinology of salmon smoltification

General and Comparative Endocrinology

Volumn 170, Issue 2, 2011, Pages 290-298

  Björnsson, Björn Thrandur ^a   Stefansson, Sigurd O ^b   McCormick, Stephen D ^c  

^a UNIVERSITY OF GOTHENBURG   (Sweden)

^b UNIVERSITY OF BERGEN   (Norway)

^c U S GEOLOGICAL SURVEY   (United States)

Author keywords

Cortisol; Environmental cues; Growth hormone; Insulin like growth factor I; Parr; Post smolt; Prolactin; Salmon; Smolt; Smoltification; Thyroid hormones; Trout

Indexed keywords

4 NONYLPHENOL; ATRAZINE; DIDECYLDIMETHYLAMMONIUM CHLORIDE; ENDOCRINE DISRUPTOR; GROWTH HORMONE; HYDROCORTISONE; POLYCHLORINATED BIPHENYL; POLYCYCLIC AROMATIC HYDROCARBON; PROLACTIN; SEA WATER; SODIUM; SOMATOMEDIN C; THYROID HORMONE;

ACIDIFICATION; ARTICLE; CLIMATE CHANGE; ENVIRONMENTAL FACTOR; ENVIRONMENTAL SUSTAINABILITY; ENVIRONMENTAL TEMPERATURE; EVOLUTIONARY ADAPTATION; FIN (ORGAN); FISH SCHOOL; HATCHERY; METABOLIC RATE; MIGRATION; NONHUMAN; OLFACTORY DISCRIMINATION; PHOTOPERIODICITY; PHYSICAL DEVELOPMENT; PRIORITY JOURNAL; REARING; SALMON; SALT TOLERANCE; SURVIVAL; WATER CONTAMINATION;

EID: 78650678886     PISSN: 00166480     EISSN: 10956840     Source Type: Journal    
DOI: 10.1016/j.ygcen.2010.07.003     Document Type: Article

References (118)

1. Agustsson T., Sundell K., Sakamoto T., Johansson V., Ando M., Björnsson B.Th. Growth hormone endocrinology of Atlantic salmon: pituitary gene expression, hormone storage, secretion, and plasma levels during parr-smolt transformation. J. Endocrinol. 2001, 170:227-234.
2. Andreassen P.M.R., Martinussen M.B., Hvidsten N.A., Stefansson S.O. Feeding and prey-selection of wild Atlantic salmon post-smolts. J. Fish Biol. 2001, 58:1667-1679.
3. Aubin-Horth N., Letcher B.H., Hofman H.A. Gene-expression signatures of Atlantic salmon's plastic life cycle. Gen. Comp. Endocrinol. 2009, 163:278-284.
4. Barron M.G. Endocrine control of smoltification in anadromous salmonids. J. Endocrinol. 1986, 108:313-319.
5. Beckman B.R., Shimizu M., Gadberry B.A., Cooper K.A. Response of the somatotropic axis of juvenile coho salmon to alterations in plane of nutrition with an analysis of the relationships among growth rate and circulating IGF-I and 41kDa IGFBP. Gen. Comp. Endocrinol. 2004, 135:334-344.
6. Beckman B.R., Fairgrieve W., Cooper K.A., Mahnken C.V.W., Beamish R.J. Evaluation of endocrine indices of growth in individual postsmolt coho salmon. Trans. Am. Fish. Soc. 2004, 133:1057-1067.
7. Benedet S., Andersson E., Mittelholzer C., Taranger G.L., Björnsson B.Th. Pituitary and plasma growth hormone dynamics during sexual maturation of female Atlantic salmon. Gen. Comp. Endocrinol. 2010, 167:77-85.
8. Björnsson B.Th. The biology of salmon growth hormone: from daylight to dominance. Fish Physiol. Biochem. 1997, 17:9-24.
9. Björnsson B.Th., Bradley T. Past successes, present misconceptions and future milestones in salmon smoltification research. Aquaculture 2007, 273:384-391.
10. Björnsson B.Th., Young G., Lin R.J., Deftos L.J., Bern H.A. Smoltification and seawater adaptation of coho salmon, Oncorhynchus kisutch: plasma calcitonin levels, calcium regulation and osmoregulation. Gen. Comp. Endocrinol. 1989, 74:346-354.
11. Björnsson B.Th., Stefansson S.O., Hansen T. Photoperiod regulation of plasma growth hormone levels during parr-smolt transformation of Atlantic salmon: implications for hypoosmoregulatory ability and growth. Gen. Comp. Endocrinol. 1995, 100:73-82.
12. Björnsson B.Th., Stefansson G.V., Berge Å.I., Hansen T., Stefansson S.O. Circulating growth hormone levels in Atlantic salmon following seawater transfer: effects of photoperiod regime, salinity, duration of exposure and season. Aquaculture 1998, 168:121-137.
13. Björnsson B.Th., Johansson V., Benedet S., Einarsdottir I.E., Hildahl J., Agustsson T., Jonsson E. Growth hormone endocrinology of salmonids: regulatory mechanisms and mode of action. Fish Physiol. Biochem. 2002, 27:227-242.
14. Brown D.D., Cai L. Amphibian metamorphosis. Dev. Biol. 2007, 306:20-33.
15. Chittenden C.M., Sura S., Butterworth K.G., Cubitt K.F., Plantalech Manel-La L., Balfry S., Økland F., McKinley R.S. Riverine, estuarine and marine migratory behaviour and physiology of wild and hatchery-reared coho salmon Oncorhynchus kisutch (Walbaum) smolts descending the Campbell River, BC. Can. J. Fish. Biol. 2008, 72:614-628.
16. Crozier W.W. Genetic implications of hatchery rearing in Atlantic salmon-effects of rearing environment on genetic composition. J. Fish Biol. 1998, 52:1014-1025.
17. Dickhoff W.W., Sullivan C.V., Mahnken C.V.W. Thyroid-hormones and gill ATPase during smoltification of Atlantic salmon (Salmo salar). Aquaculture 1985, 45:376.
18. Dickhoff W.W., Brown C.L., Sullivan C.V., Bern H.A. Fish and amphibian models for developmental endocrinology. J. Exp. Zool. 1990, 4(Suppl.):90-97.
19. Dickhoff W.W., Beckman B.R., Larsen D.A., Duan C., Moriyama S. The role of growth in endocrine regulation of salmon smoltification. Fish Physiol. Biochem. 1997, 17:231-236.
20. Dufour S., Rousseau K. Neuroendocrinology of fish metamorphosis and puberty: evolutionary and ecophysiological perspectives. J. Mar. Sci. Technol. (Taiwan) 2007, 15:55-68.
21. Dutil J.D., Coutu J.M. Early marine life of Atlantic salmon, Salmo salar postsmolts in the Northern Gulf of St. Lawrence. Fish. Bull. 1988, 86:197-212.
22. Ebbesson L.O.E., Björnsson B.Th., Stefansson S.O., Ekström P. Free plasma thyroxine levels in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation: comparison with total thyroxine, triiodothyronine, and growth hormone levels. Fish Physiol. Biochem. 2000, 22:45-50.
23. Ebbesson L.O.E., Björnsson B.Th., Ekström P., Stefansson S.O. Daily endocrine profiles in parr and smolt Atlantic salmon. Comp. Biochem. Physiol. A 2008, 151:698-704.
24. Fairchild W.L., Swansburg E.O., Arsenault J.T., Brown S.B. Does an association between pesticide use and subsequent declines in catch of Atlantic salmon (Salmo salar) represent a case of endocrine disruption?. Environ. Health Perspect. 1999, 107:349-357.
25. Folmar F.C., Dickhoff W.W. The parr-smolt transformation (smoltification) and seawater adaptation in salmonids: a review of selected literature. Aquaculture 1980, 21:1-37.
26. Friedland K.D., Hansen L.P., Dunkley D.A., MacLean J.C. Linkage between ocean climate, post-smolt growth, and survival of Atlantic salmon (Salmo salar L.) in the North Sea area. ICES J. Mar. Sci. 2000, 57:419-429.
27. Friedland K.D., MacLean J.C., Hansen L.P., Peyronnet A.J., Karlsson L., Reddin D.G., O'Maoilèidigh N., McCarthy J.L. The recruitment of Atlantic salmon in Europe. ICES J. Mar. Sci. 2009, 66:289-304.
28. Fyhn U.E.H., Clarke W.C., Whitler R.E. Hemoglobins in smoltifying Chinook salmon, Oncorhynchus tshawytscha, subjected to photoperiod control. Aquaculture 1991, 95:359-372.
29. Handeland S.O., Järvi T., Fernö A., Stefansson S.O. Osmotic stress, antipredatory behaviour and mortality of Atlantic salmon (Salmo salar L.) postsmolts. Can. J. Fish. Aquat. Sci. 1996, 53:2673-2680.
30. Handeland S.O., Berge Å., Björnsson B.Th., Stefansson S.O. Effects of temperature and salinity on osmoregulation and growth of Atlantic salmon (Salmo salar L.) smolts in seawater. Aquaculture 1998, 168:289-302.
31. Handeland S.O., Berge Å., Björnsson B.Th., Lie Ø., Stefansson S.O. Seawater adaptation by out-of-season Atlantic salmon (Salmo salar L.) smolts at different temperatures. Aquaculture 2000, 181:377-396.
32. Handeland S.O., Porter M., Björnsson B.Th., Stefansson S.O. Osmoregulation and growth in a wild and a selected strain of Atlantic salmon smolts on two photoperiod regimes. Aquaculture 2003, 222:29-43.
33. Haugland M., Holst J.C., Holm M., Hansen L.P. Feeding of Atlantic salmon (Salmo salar L.) post-smolts in the northeast Atlantic. ICES J. Mar. Sci. 2006, 63:1488-1500.
34. Heintz R.A., Rice S.D., Wertheimer A.C., Bradshaw R.F., Thrower F.P., Joyce J.E., Short J.W. Delayed effects on growth and marine survival of pink salmon Oncorhynchus gorbuscha after exposure to crude oil during embryonic development. Mar. Ecol. Prog. Ser. 2000, 208:205-216.
35. Hoar W.S. Smolt transformation-evolution, behavior, and physiology. J. Fish. Res. Board Can. 1976, 33:1233-1252.
36. Hoar W.S. The physiology of smolting salmonids. Fish Physiology 1988, vol. XIB:275-343. Academic Press, NY.
37. Holm, M., Huse, I., Waatevik, E., Døving, K.B., Aure, J., 1982. Behaviour of Atlantic salmon smolts during seaward migration: I. Preliminary report on ultrasonic tracking in a Norwegian fjord system. ICES CM 1982/M:7, 10p.
38. Hvidsten N.A., Lund R.A. Predation on hatchery-reared and wild smolts of the Atlantic salmon, Salmo salar L., in the estuary of River Orkla, Norway. J. Fish Biol. 1988, 33:121-126.
39. Ikuta K., Aida K., Okumoto N., Hanyu I. Effects of sex steroids on the smoltification of masu salmon, Oncorhynchus masou. Gen. Comp. Endocrinol 1987, 65:99-110.
40. Iwata M. Prologue and acknowledgements. Aquaculture 2007, 273:183-184.
41. Jacobsen, J.A., 2000. Aspects of the marine ecology of Atlantic salmon. (Salmo Salar L.). Dr. scient. thesis, University of Bergen, Norway, ISBN 82-7744-072-3.
42. Johnsson J.I., Björnsson B.Th. Growth-enhanced fish can be competitive in the wild. Funct. Ecol. 2001, 15:654-659.
43. Johnsson J.I., Petersson E., Jönsson E., Järvi T., Björnsson B.Th. Growth hormone induced effects on mortality, energy status and growth: a field study on brown trout (Salmo trutta). Funct. Ecol. 1999, 13:514-522.
44. Johnsson J.I., Jönsson E., Petersson E., Järvi T., Björnsson B.Th. Fitness-related effects of growth investment in brown trout under field and hatchery conditions. J. Fish Biol. 2000, 57:326-336.
45. Johnston J.M., Seubert B.D., Kennedy C.J. Biochemical effects of didecyldimethylammonium chloride (DDAC) exposure and osmoregulatory stress on juvenile coho salmon, Oncorhynchus kisutch. Arch. Environ. Contam. Toxicol. 1998, 34:275-279.
46. Jonsson N., Jonsson B., Hansen L.P. The marine survival and growth of wild and hatchery-reared Atlantic salmon. J. Appl. Ecol. 2003, 40:900-911.
47. Kroglund F., Finstad B., Stefansson S.O., Nilsen T.O., Kristensen T., Rosseland B.O., Teien H.C., Salbu B. Exposure to moderate acid water and aluminum reduces Atlantic salmon post-smolt survival. Aquaculture 2007, 273:360-373.
48. Larsen D.A., Beckman B.R., Dickhoff W.W. The effect of low temperature and fasting during the winter on metabolic stores and endocrine physiology (Insulin, insulin-like growth factor-I and thyroxine) of coho salmon, Oncorhynchus kisutch. Gen. Comp. Endocrinol. 2001, 123:308-323.
49. Lerner D.T., Björnsson B.Th., McCormick S.D. Aqueous exposure to 4-nonylphenol and 17β-estradiol increases stress sensitivity and disrupts ion regulatory ability of juvenile Atlantic salmon. Environ. Toxicol. Chem. 2007, 26:1433-1440.
50. Lerner D.T., Björnsson B.Th., McCormick S.D. Larval exposure to 4-nonylphenol and 17β-estradiol affects physiological and behavioral development of seawater adaptation in Atlantic salmon smolts. Environ. Sci. Technol. 2007, 41:4479-4485.
51. Lerner D.T., Björnsson B.Th., McCormick S.D. Effects of aqueous exposure to polychlorinated biphenyls (Aroclor 1254) on physiology and behavior of smolt development of Atlantic salmon. Aquat. Toxicol. 2007, 81:329-336.
52. Levings C.D., Hvidsten N.A., Johnsen B.O. Feeding of Atlantic salmon, Salmo salar post-smolts in a fjord in central Norway. Can. J. Zool. 1994, 72:834-839.
53. Lucas M.C., Priede I.G., Armstrong J.D., Gindy A.N.Z., Devera L. Direct measurements of metabolism, activity and feeding behaviour of pike, Esox lucius L., in the wild, by the use of heart rate telemetry. J. Fish Biol. 1991, 39:325-345.
54. Madsen S.S., Mathiesen A.B., Korsgaard B. Effects of 17 beta-estradiol and 4-nonylphenol on smoltification and vitellogenesis in Atlantic salmon (Salmo salar). Fish Physiol. Biochem. 1997, 17:303-312.
55. Marchetti M.P., Nevitt G.A. Effects of hatchery rearing on brain structures of rainbow trout, Oncorhynchus mykiss. Environ. Biol. Fish. 2003, 66:9-14.
56. Martin-Smith K.M., Armstrong J.D., Johnsson J.I., Björnsson B.Th. Growth hormone increases growth and dominance of wild juvenile Atlantic salmon without affecting space use. J. Fish Biol. 2004, 65(Suppl. A):156-172.
57. Mayer I., Borg B., Plisetskaya E.M. Plasma-levels of insulin and liver-glycogen contents in one-year and 2-year old Atlantic salmon (Salmo salar L.) during the period of parr-smolt transformation. Fish Physiol. Biochem. 1994, 13:191-197.
58. McCarthy J.L., Friedland K.D., Hansen L.P. Monthly indices of the post-smolt growth of Atlantic salmon from the Drammen River, Norway. J. Fish Biol. 2008, 72:1572-1588.
59. McCormick S.D. Ontogeny and evolution of salinity tolerance in anadromous salmonids: hormones and heterochrony. Estuaries 1994, 17:26-33.
60. +-ATPase and chloride cell function. Cellular and Molecular Approaches to Fish Ionic Regulation 1995, 285-315. Academic Press, San Diego. C.M. Wood, T.J. Shuttleworth (Eds.).
61. McCormick S.D. Evolution of the hormonal control of animal performance: insights from the seaward migration of salmon. Integr. Comp. Biol. 2009, 49:408-422.
62. McCormick S.D., Björnsson B.Th. Physiological and hormonal differences among Atlantic salmon parr and smolts reared in the wild, and hatchery smolts. Aquaculture 1994, 121:235-244.
63. McCormick S.D., Saunders R.L. Preparatory physiological adaptations for marine life of salmonids: osmoregulation, growth, and metabolism. Am. Fish. Soc. Symp. 1987, 1:211-229.
64. McCormick S.D., Saunders R.L. Influence of ration level and salinity on circulating levels of thyroid hormones in Atlantic salmon (Salmo salar). Gen. Comp. Endocrinol. 1990, 78:224-230.
65. McCormick S.D., Moyes C.D., Ballantyne J.S. Influence of salinity on the energetics of gill and kidney of Atlantic salmon (Salmo salar). Fish Physiol. Biochem. 1989, 6:243-254.
66. +-ATPase in Atlantic salmon (Salmo salar). J. Comp. Physiol. B 1995, 165:245-254.
67. McCormick S.D., Shrimpton J.M., Zydlewski J.D. Temperature effects on osmoregulatory physiology of juvenile anadromous fish. Global Warming: Implications for Freshwater and Marine Fish 1997, Cambridge University Press, Cambridge. C.M. Wood, D.G. Mcdonald (Eds.).
68. McCormick S.D., Hansen L.P., Quinn T.P., Saunders R.L. Movement, migration, and smolting of Atlantic salmon (Salmo salar). Can. J. Fish. Aquat. Sci. 1998, 55(Suppl. 1):77-92.
69. McCormick S.D., Moriyama S., Björnsson B.Th. Low temperature limits the photoperiod control of smolting in Atlantic salmon through endocrine mechanisms. Am. J. Physiol. 2000, 278:R1352-R1361.
70. McCormick S.D., Shrimpton J.M., Moriyama S., Björnsson B.Th. Effects of an advanced temperature cycle on smolt development and endocrinology indicate that temperature is not a zeitgeber for smolting in Atlantic salmon. J. Exp. Biol. 2002, 205:3553-3560.
71. McCormick S.D., O'Dea M.F., Moeckel A.M., Björnsson B.Th. Endocrine and physiological changes in Atlantic salmon smolts following hatchery release. Aquaculture 2003, 222:45-57.
72. McCormick S.D., O'Dea M.F., Moeckel A.M., Lerner D.T., Björnsson B.Th. Endocrine disruption of parr-smolt transformation and seawater tolerance of Atlantic salmon by 4-nonylphenol and 17β-estradiol. Gen. Comp. Endocr. 2005, 142:280-288.
73. McCormick S.D., Shrimpton J.M., Moriyama S., Björnsson B.Th. Differential hormonal responses of Atlantic salmon parr and smolt to increased daylength: a possible developmental basis for smolting. Aquaculture 2007, 273:337-344.
74. McCormick S.D., Lerner D.T., Monette M.Y., Nieves-Puigdoller K., Kelly J.T., Björnsson B.Th. Taking it with you when you go: how perturbations to the freshwater environment, including temperature, dams, and contaminants, affect marine survival of salmon. Am. Fish. Soc. Symp. 2009, 69:195-214.
75. McDowall R.M. Life history deviation and landlocking. Diadromy in Fishes Migrations Between Freshwater and Marine Environments 1988, 71-185. Chapman & Hall, London.
76. Moore A., Scott A.P., Lower N., Katsiadaki I., Greenwood L. The effect of 4-nonylphenol and atrazine on Atlantic salmon (Salmo salar L.) smolts. Aquaculture 2003, 222:253-263.
77. Munakata A., Björnsson B.Th., Jönsson E., Amano M., Ikuta K., Kitamura S., Kurokawa T., Aida K. Post-released adaptation process of the hatchery-reared masu salmon fry in a river. J. Fish Biol. 2000, 56:163-172.
78. Nagahama Y., Adachi S., Tashiro F., Grau E.G. Some endocrine factors affecting the development of seawater tolerance during parr-smolt transformation of the amago salmon (Oncorhynchus rhodurus). Aquaculture 1982, 28:81-91.
79. Nieves-Puigdoller K., Björnsson B.Th., McCormick S.D. Effects of hexazinone and atrazine on the physiology and endocrinology of smolt development in Atlantic salmon. Aquat. Toxicol. 2007, 84:27-37.
80. Nilsen T.O., Ebbesson L.O.E., Stefansson S.O. Smolting in anadromous and landlocked strains of Atlantic salmon (Salmo salar). Aquaculture 2003, 222:71-82.
81. --cotransporter and CFTR anion channel in juvenile anadromous and landlocked Atlantic salmon Salmo salar. J. Exp. Biol. 2007, 210:2885-2896.
82. Nilsen T.O., Ebbesson L.O.E., Kiilerich P., Björnsson B.Th., Madsen S.S., McCormick S.D., Stefansson S.O. Endocrine systems in juvenile anadromous and landlocked Atlantic salmon (Salmo salar): seasonal development and seawater acclimation. Gen. Comp. Endocrinol. 2008, 155:762-772.
83. Nordgarden U., Fjelldal P.G., Hansen T., Björnsson B.Th., Wargelius A. Growth hormone and insulin-like growth factor-I act together and independently when regulating growth in vertebral and muscle tissue of Atlantic salmon postsmolts. Gen. Comp. Endocrinol. 2006, 149:253-260.
84. Ojima D., Iwata M. The relationship between thyroxine surge and onset of downstream migration in chum salmon Oncorhynchus keta fry. Aquaculture 2007, 273:185-193.
85. Parrish D.L., Behnke R.J., Gephard S.R., McCormick S.D., Reeves G.H. Why aren't there more Atlantic salmon (Salmo salar)?. Can. J. Fish. Aquat. Sci. 1998, 55(Suppl. 1):281-287.
86. Patiñio R., Schreck C.B. Sexual dimorphism of plasma sex steroid levels in juvenile coho salmon, Oncorhynchus kisutch, during smoltification. Gen. Comp. Endocrinol. 1986, 61:127-133.
87. Peyronnet A., Friedland K.D., Maoiléidigh N.O., Manning M., Poole W.R. Links between patterns of marine growth and survival of Atlantic salmon Salmo salar L. J. Fish Biol. 2007, 71:684-700.
88. Picha M.E., Turano M.J., Beckman B.R., Borski R.J. Endocrine biomarkers of growth and applications to aquaculture: a minireview of growth hormone, insulin-like growth factor (IGF)-I, and IGF-binding proteins as potential growth indicators in fish. N. Am. J. Aquacult. 2008, 70:196-211.
89. Pierce A.L., Shimizu M., Beckman B.R., Baker D.M., Dickhoff W.W. Time course of the GH/IGF axis response to fasting and increased ration in chinook salmon (Oncorhynchus tshawytscha). Gen. Comp. Endocrinol. 2005, 140:192-202.
90. Plisetskaya E.M., Swanson P., Bernard M.G., Dickhoff W.W. Insulin in coho salmon (Oncorhynchus kisutch) during the parr to smolt transformation. Aquaculture 1988, 72:151-164.
91. Power D.M., Llewellyn L., Faustino M., Nowell M.A., Björnsson B.Th., Einarsdottir I.E., Canario A.V.M., Sweeney G.E. Thyroid hormones in growth and development of fish. Comp. Biochem. Physiol. C 2001, 130:447-459.
92. Power D.M., Einarsdottir I.E., Pittman K., Sweeney G.E., Hildahl J., Campinho M.A., Silva N., Sæle Ø., Galay-Burgos M., Smáradóttir H., Björnsson B.Th. The molecular and endocrine basis of flatfish metamorphosis. Rev. Fish. Sci. 2008, 16(S1):93-109.
93. Prunet P., Boeuf G., Bolton J.P., Young G. Smoltification and seawater adaptation in Atlantic salmon (Salmo Salar). Plasma prolactin, growth hormone, and thyroid hormones. Gen. Comp. Endocrinol. 1989, 74:355-364.
94. Reinecke M., Björnsson B.Th., Dickhoff W.W., McCormick S.D., Navarro I., Power D.M., Gutierrez J. Growth hormone and insulin-like growth factors in fish: where we are and where to go. Gen. Comp. Endocrinol. 2005, 142:20-24.
95. +-ATPase α-isoform switching in gills of rainbow trout (Oncorhynchus mykiss) during salinity transfer. J. Exp. Biol. 2003, 206:4475-4486.
96. Rikardsen A.H., Haugland M., Bjørn P.A., Finstad B., Knudsen R., Dempson J.B., Holst J.C., Hvidsten N.A., Holm M. Geographical differences in marine feeding of Atlantic salmon post-smolts in Norwegian fjords. J. Fish Biol. 2004, 64:1655-1679.
97. Saunders R.L., Henderson E.B., Harmon P.R., Johnston C.E., Eales J.G. Effects of low environmental pH on smolting of Atlantic salmon (Salmo salar). Can. J. Fish. Aquat. Sci. 1983, 40(8):1203-1211.
98. Seear P.J., Carmichael S.N., Talbot R., Taggart J.B., Bron J.E., Sweeney G.E. Differential gene expression during smoltification of Atlantic salmon (Salmo salar L.): a first large-scale microarray study. Mar. Biotechnol. 2010, 12:126-140.
99. Shrimpton J.M., Bernier N., Randall D.J. Changes in cortisol dynamics in wild and hatchery-reared juvenile coho salmon (Oncorhynchus kisutch) during smoltification. Can. J. Fish. Aquat. Sci. 1994, 54:2179-2187.
100. Shrimpton J.M., Bernier N.J., lwama G.K., Randall D.J. Differences in measurements of smolt development between wild and hatchery-reared juvenile coho salmon (Oncorhynchus kisutch) before and after saltwater exposure. Can. J. Fish. Aquat. Sci. 1994, 51:2170-2178.
101. Sower A.S., Karlson K.H., Fawcett R.S. Changes in plasma thyroxine, estradiol-7β, and 17α,20β-dihydroxy-4-pregnen-3-one during smoltification of coho salmon. Gen. Comp. Endocrinol. 1992, 85:278-285.
102. Stefansson S.O., Björnsson B.Th., Hansen T., Haux C., Taranger G.L., Saunders R.L. Growth, parr-smolt transformation and changes in growth hormone of Atlantic salmon (Salmo salar) reared under different photoperiods. Can. J. Fish. Aquat. Sci. 1991, 48:2100-2108.
103. Stefansson S.O., Björnsson B.Th., Sundell K., Nyhammer G., McCormick S.D. Physiological characteristics of wild Atlantic salmon post-smolts during estuarine and coastal migration. J. Fish Biol. 2003, 63:942-955.
104. Stefansson S.O., Nilsen T.O., Ebbesson L.O.E., Wargelius A., Madsen S.S., Björnsson B.Th., McCormick S.D. Molecular mechanisms of continuous light inhibition of Atlantic salmon parr-smolt transformation. Aquaculture 2007, 273:235-245.
105. Stefansson S.O., Björnsson B.Th., Ebbesson L.O.E., McCormick S.D. Smoltification. Fish Larval Physiology 2008, 639-681. Science Publishers, Enfield. R.N. Finn, B.G. Kapoor (Eds.).
106. Stefansson, S.O., Haugland, M., Björnsson, B.Th., McCormick, S.D., Holm, M., Ebbesson, L.O.E., Holst, J.C., Nilsen, T.O., in press. Growth, osmoregulation and endocrine changes in wild Atlantic salmon smolts and post-smolts during marine migration. Aquaculture.
107. Sundell K., Dellefors C., Björnsson B.Th. Wild and hatchery-reared brown trout, Salmo trutta, differ in smolt related characteristics during parr-smolt transformation. Aquaculture 1998, 167:53-65.
108. Sundt-Hansen L., Neregård L., Einum S., Höjesjö J., Björnsson B.Th., Hindar K., Økland F., Johnsson J.I. Growth enhancement increases movement activity of brown trout in the wild. Funct. Ecol. 2009, 23:551-558.
109. Sweeting R.M., Wagner G.F., McKeown B.A. Changes in plasma glucose, amino acid nitrogen and growth hormone during smoltification and seawater adaptation in coho salmon, Oncorhynchus kisutch. Aquaculture 1985, 45:185-197.
110. Thorpe J.E. Salmonid fishes and the estuarine environment. Estuaries 1994, 17:76-93.
111. Waring C.P., Moore A. The effect of atrazine on Atlantic salmon (Salmo Salar) smolts in fresh water and after sea water transfer. Aquat. Toxicol. 2004, 66:93-104.
112. Winans G.A., Nishioka R.S. A multivariate description of change in body shape of coho salmon (Oncorhynchus kisutch) during smoltification. Aquaculture 1987, 66:235-245.
113. Wood A.W., Duan C.M., Bern H.A. Insulin-like growth factor signaling in fish. Int. Rev. Cytol. 2005, 243:215-285.
114. Yamada H., Ohta H., Yamauchi K. Serum thyroxine, estradiol-17β, and testosterone profiles during the parr-smolt transformation of masu salmon, Oncorhynchus masou. Fish Physiol. Biochem. 1993, 12:1-9.
115. Young G., Björnsson B.Th., Lin R.J., Bolton J.P., Prunet P., Bern H.A. Smoltification and seawater adaptation in coho salmon, Oncorhynchus kisutch: plasma prolactin, growth hormone, thyroid hormones and cortisol. Gen. Comp. Endocrinol. 1989, 74:335-345.
116. Young G., McCormick S.D., Björnsson B.Th., Bern H.A. Circulating growth hormone, cortisol and thyroxine levels after 24 hour seawater challenge of yearling coho salmon at different developmental stages. Aquaculture 1995, 136:371-384.
117. Zaugg W.S., McLain L.R. Influence of water temperature on gill sodium, potassium-stimulated ATPase activity in juvenile coho salmon (Oncorhynchus kisutch). Comp. Biochem. Physiol. 1976, 54A:419-421.
118. Zydlewski G.B., Foott S., Nichols K., Hamelberg S., Zydlewski J.D., Björnsson B.Th. Enhanced smolt characteristics of steelhead trout exposed to alternative hatchery conditions during the final months of rearing. Aquaculture 2003, 222:101-117.