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Eva Andersson

Telefon: 920 90 514
Besøksadresse: Nordnesgaten 50, Bergen

Arbeider med

My research focuses on the Brain-Pituitary-Gonad (BPG) axis (gonadotropin-releasing hormones, gonadotropins, gonadal steroids and the receptors for these hormones) in teleosts. More precisely, I am studying the roles of selected components of the BPG-axis in determining sexual maturation and puberty in fish, with special reference to environmental and neuroendocrine control mechanisms.
Studies on environmental and neuroendocrine control mechanisms in determining sexual maturation and puberty in Atlantic salmon and Atlantic cod has become my main research focus.  Furthermore, I am involved in working with early sex-differentiation of cod. Although my work in the last years has focused on salmon and cod, I have also worked with many other fish species including halibut, turbot, African catfish and three-spined stickleback.

Curriculum Vitae

Eva Andersson, Fil Dr. (Ph.D.)
Birth date: 25.10.1958
Senior scientist
Institute of Marine Research (IMR),
Research group reproduction and growth,
P.O. Box 1870 Nordnes,
N-5817 Bergen, NORWAY
Work phone: +4755236802
E-mail: eva.andersson@imr.no

1992 Fil. Dr. (PhD) in Zoology, Stockholm University, Sweden.
1987-1992 Postgraduate studies at the Department of Zoology, division of Functional Morphology, Stockholm University, Sweden.
1982-1985 Undergraduate studies in Biology at Stockholm University, Sweden.

Scientific positions
2006- Senior Scientist at IMR
2003-2006 Research Scientist at IMR.
1998-2002 Research Scientist at the Department of Fisheries and Marine Biology, Bergen University, Norway
1996-1998 Postdoctoral research fellowship at the Department of Zoology, Lund University, Sweden.
1993-1995 Postdoctoral research fellowship at the Department of Experimental Zoology, University of Utrecht, the Netherlands.

Scientific publications (peer-reviewed articles):
1. Andersson, E., Borg, B. and Lambert, J.G.D. (1988). Aromatase activity in brain and pituitary of immature and mature Atlantic salmon (Salmo salar L.) parr. General and Comparative Endocrinology. 72, 394-401.
2. Andersson, E., Mayer,I., and Borg, B. (1988). Inhibitory effect of 11-ketoandrostenedione and androstenedione on spermatogenesis in the three-spined stickleback, Gasterosteus aculeatus L. Journal of Fish Biology. 33, 835-840.
3. Andersson, E., and Olsson, R. (1989). The oral papilla of the lancelet larva (Branchiostoma lanceolatum, Cephalochordata). Acta Zoologica (Stockholm). 70, 53-56.
4. Borg, B., Andersson, E., Mayer, I. and Lambert, J.G.D. (1989). Aromatase activity in the brain of the three-spined stickleback, Gasterosteus aculeatus . III. Effects of castration under different conditions and of replacement with different androgens. Experimental Biology. 48, 149-152.
5. Borg, B., Andersson, E., Mayer, I., Zandbergen, M. A., and Peute, J. (1989). Effects of gonadectomy on pituitary gonadotropic cells of the three-spined stickleback, Gasterosteus aculeatus L., under long photoperiod in winter: Indications for a positive feedback. General and comparative Endocrinology. 76, 12-18.
6. Andersson, E., Borg, B and de Leeuw, R. (1989). Characterization of gonadotropin-releasing hormone binding sites in the pituitary of the three-spined stickleback, Gasterosteus aculeatus. General and Comparative Endocrinology. 76, 41-45.
7. Andersson, E., Borg, B. and Goos, H.J.Th. (1992). Temperature, but not photoperiod, influences gonadotropin-releasing hormone binding in the pituitary of the three-spined stickleback, Gasterosteus aculeatus. General and Comparative Endocrinology. 88,111-116.
8. Borg, B., Antonopoulos, E., Andersson, E., Carlberg, T. and Mayer, I. (1993). Effectiveness of several androgens in stimulating kidney hypertrophy, a secondary sexual character, in castrated male three-spined sticklebacks (Gasterosteus aculeatus). Canadian Journal of Zoology. 71, 2327-2329.
9. Bogerd, J., Zandbergen, T., Andersson, E., and Goos, H. J. Th. (1994). Isolation, characterization and expression of cDNAs encoding the catfish-type and chicken-II-type gonadotropin-releasing-hormone precursors in the African catfish. European Journal of Biochemistry. 222, 541-549.
10. Andersson, E., Bogerd, J., Borg, B., Sharp, P.J., Sherwood N.M., and Goos, H.J.Th. (1995). Characterization and localization of gonadotropin-releasing hormone in the brain and pituitary of the three-spined stickleback, Gasterosteus aculeatus. Cell and Tissue Research. 279, 485-493.
11. Borg, B., Antonopoulou, E., Mayer, I., Andersson, E., Berglund, I., and Swanson P. (1998) Effects of gonadectomy and androgen treatments on pituitary and plasma levels of gonadotropins in mature male Atlantic salmon, Salmo salar, parr - Positive feedback control of both gonadotropin I and II. Biology of Reproduction, 58, 814-820.
12. J. Bogerd, Andersson, E., Blomenröhr, M., Tensen, C.P., Van der Putten, H.H.A.G.M., Vischer, H., Granneman, J.C.M., Janssen-Dommerholt, C., Goos, H.J.Th. and Schulz, R.W. (2000) Discrepancy between structural characteristics and ligand specificity of an African catfish gonadotropin receptor. In: Norberg, B., Kjesbu, O.S., Taranger, G.L., Andersson, E. and Stefansson, S.O. (eds.). Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, July 4 - 9, 1999. pp167-169.
13. Bogerd, J., Blomenröhr, M., Andersson, E., van der Putten, H.H.A.G.M., Tensen, C.P., Vischer, H., Granneman, J.C.M., Janssen-Dommerholt, C., Goos, H.J.Th., and Schulz, R.W. (2001) Discrepancy between molecular structure and ligand selectivity of a testicular gonadotropin receptor of the African catfish (Clarias gariepinus). Biology of Reproduction. 64, 1633-1643.
14. Andersson, E., Fjelldal, P.G., Klenke, U., Vikingstad, E., Taranger, G.L., Zohar, Y. and Stefansson, S.O. (2001). Three forms of GnRH in the brain and pituitary of the turbot, Scophthalmus maximus; immunological characterization and seasonal variation. Comparative Biochemistry and Physiology B. 129, 551-558.
15. Weltzien, F.-A., Norberg, B., Helvik, J.V., Andersen, Ø. , Swanson, P. and Andersson, E. (2003). Identification and localization of eight distinct cell types in the pituitary of male Atlantic halibut (Hippoglossus hippoglossus L.). Comparative Biochemistry and Physiology A. 134, 315-327.
16. Weltzien, F.-A., Kobayashi, T., Andersson, E., Norberg, B., and Andersen Ø. (2003) Molecular characterization and expression of FSH, LH, and common - subunit in male Atlantic halibut (Hippoglossus hippoglossus) General and Comparative Endocrinology. 131, 87-96.
17. Taranger, G.L., Vikingstad, E., Klenke, U., Mayer, I., Stefansson, S.O., Norberg, B., Hansen, T., Zohar, Y. and Andersson, E. (2003). Effects of photoperiod, temperature and GnRHa treatment on the reproductive physiology of Atlantic salmon (Salmo salar L.) broodstock. Fish Physiology and Biochemistry. 28, 403-406.
18. Weltzien, F.-A., Andersson, E., Andersen Ø., Shalchian-Tabrizi, K., and Norberg, B. (2004) The brain-pituitary-gonad axis in male teleosts, with special emphasis on the flatfish (Pleuronectiformes). Review. Comparative Biochemistry and Physiology A. 137, 447-477.
19. Ebbesson, L.O.E., Tipsmark, C.K., Holmqvist, B., Nilsen, T., Andersson, E., Stefansson, S.O., and Madsen, S.S. (2005). Nitric oxide synthase in the gill of Atlantic salmon: co-localization with and inhibition of the Na+,K+-ATPase. Journal of Experimental Biology. 208:1011-1017.
20. Gotensparre, Susan M., Eva Andersson, Anna Wargelius, Tom Hansen and Ian Johnston. (2006). Insight into the complex genetic network of tetraploid Atlantic salmon (Salmo salar L.): Description of multiple novel Pax7 splice variants. Gene. 373: 8-15.
21. Schulz, R.W., Andersson, E., Taranger, G.L. (2006). Photoperiod manipulation can stimulate or inhibit testis maturation in Atlantic salmon (Salmo salar). Animal Reproduction. 3:121-126.
22. Nilsen, Tom O., Lars O. Ebbesson, Steffen S. Madsen, Stephen D. McCormick, Eva Andersson, Bjørn Th. Bjørnsson, Patrick Prunet, and Sigurd O. Stefansson. (2007). Differential expression of gill Na+,K+-ATPase a and b subunits, Na+,K+-2Cl- cotransporter and CFTR anion channel in juvenile anadromous and landlocked Atlantic salmon Salmo salar. Journal of Experimental Biology. 210: 2885-2896.
23. Vikingstad, E, Eva Andersson, Birgitta Norberg, Ian Mayer, Ulrike Klenke, Yonathan Zohar, Sigurd Olav Stefansson, and Geir Lasse Taranger. (2007). The combined effects of temperature and GnRHa treatment on the final stages of sexual maturation in Atlantic salmon (Salmo salar L.) females. Fish Physiology and Biochemistry. 34(3), 289-298 .
24. Mittleholzer C., Andersson, E., Consten, D., Hirai, T., Nagahama, Y., Norberg, B. (2007). 20b-HSD and CYP19A1 are differentially expressed during maturation in Atlantic cod (Gadus morhua). Journal of Molecular Endocrinology 39:319-328.
25. Benedet, S., Bjørn Th. Bjørnsson, Geir Lasse Taranger, and Eva Andersson. (2008). Cloning of somatolactin alpha, beta forms and the somatolactin receptor in Atlantic salmon: seasonal expression profile in pituitary and ovary of maturing female broodstock. Reproductive Biology and Endocrinology 6:42. DOI: 10.1186/1477-7827-6-42.
26. Mittelholzer C., Andersson, E., Taranger, G.L., Consten, D., Hirai, T., Senthilkumaran, B., Nagahama, Y., Norberg, B. (2009). Molecular characterization and quantification of the gonadotropin receptors FSH-R and LH-R from Atlantic cod (Gadus morhua). General and Comparative Endocrinology. 160: 47-58.
27. Eva Andersson, Wouter Nijenhuis, Rune Male, Penny Swanson, Jan Bogerd, Geir Lasse Taranger, and Rüdiger W. Schulz, (2009). Pharmacological characterization, localization and quantification of expression of gonadotropin receptors in Atlantic salmon (Salmo salar L.) Ovaries. General and Comparative Endocrinology 163:329-339.
28. C Mittelholzer, E Andersson, G L Taranger, Ø Karlsen, B Norberg. (2009). Molecular quantification of the gonadotropin subunits GPα, FSHβ, and LHβ mRNA expression from Atlantic cod (Gadus morhua) throughout a reproductive cycle. Comparative Biochemistry and Physiology, B. 153: 288-295.
29. Geir Lasse Taranger, Manuel Carrillo, Rüdiger W. Schulz, Pascal Fontaine, Silvia Zanuy, Alicia Felip, Finn-Arne Weltzien, Sylvie Dufour, Ørjan Karlsen, Birgitta Norberg, Eva Andersson, Tom Hansen. (2010). Control of puberty in farmed fish. General and Comparative Endocrinology, 165: 483-515.
30. Benedet, S., Eva Andersson, Christian Mittelholzer, Geir Lasse Taranger, and Bjørn Th. Bjørnsson. (2010). Pituitary and plasma growth hormone dynamics during sexual maturation of female Atlantic salmon. General and Comparative Endocrinology. 167: 77-85. 
31. S. Muncaster, E. Andersson, O. S. Kjesbu, G. L. Taranger, A.B. Skiftesvik and B. Norberg. (2010). The reproductive cycle of female Ballan wrasse, Labrus bergylta, in high latitude, temperate waters. Journal of Fish Biology. 77: 494-511.