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Details of Dr. Ivar Ronnestad   


Gender male
Job title Professor
Department Department of Biology
University of Bergen, Bergen High Technology Centre ( HIB)
Faculty of Mathematics and Natural Science Thormøhlensgate 55 Bergen 5008
Pb 7803
Tel +47 5558 3586
Fax +47 5558 9673
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Degree Dr.scient
Job type Research , Technical Advice & Consulting
Research Area(s) Fisheries, Aquaculture , Fisheries, Aquaculture
Research Activities Nutritional physiology of fish. Both adult, juvenile and larval stages. Key words: Digestive physiology, endocrine control of digestion and energy homeostasis, ontogeny of digestive function, appetite
Research Region 36, 53
Skills/Expertise Fish physiology, digestion, appetite
PUBLICATIONS (as reported by Dr. Ivar RONNESTAD)

SINCE 2012 (ISI 133. h-index 33) A 1. Kling P, Jönsson E, Einarsottir IE, Nilsen, T.O. Rønnestad I, Stefansson SO, and Björnsson BTh. 2012. The role of growth hormone in growth, lipid homeostasis, energy utilization and partitioning in rainbow trout: interactions with leptin, ghrelin and insulin-like growth factor I. General and Comparative Endocrinology. doi:10.1016/j.ygcen. 175:153?162 A 2. Pinto, W., I. Rønnestad, A-E. Jordal, A.S. Gomes, M.T. Dinis and C. Aragão. 2012. Cloning, tissue and ontogenetic expression of the taurine transporter in the flatfish Senegalese sole (Solea senegalensis). Amino acids. DOI 10.1007/s00726-010-0826-6. 42: 1317?1327 A 3. de Vareilles, M, N. Richard, P.J. Gavaia, T.S. Silva, O. Cordeiro, M. Yúfera, I. Baptista, C. Pires, P. Pousão-Ferreira, P.M. Rodrigues, I. Rønnestad, KE. Fladmark, L.E.C. Conceição. 2012. Impact of dietary protein hydrolysates on skeleton quality and proteome expression in white seabream (Diplodus sargus) larvae. Journal of Applied Ichtyology. 28: 477-487 A 4. Rønnestad, I. and L.E.C. Conceição. 2012. Artemia protein is processed very fast in Solea senegalensis larvae: a dynamic simulation model. Aquaculture. doi.org/10.1016/. 350: 154-161 A 5. de Vareilles, M., L.E.C. Conceição, P. Gómez-Requeni, K. Kousoulaki, N. Richard, P.M. Rodrigues, KE. Fladmark, I. Rønnestad. 2012. Dietary lysine imbalance affects muscle proteome in zebrafish (Danio rerio): A comparative 2d-DIGE study. 2012. Marine Biotechnology. DOI 10.1007/s10126-012-9462-3. A 6. Kamisaka, K., JV. Helvik, M. Tagawa, M. Tanaka and I. Rønnestad 2013. Impact of food deprivation on the cholecystokinin (CCK)- producing cells in the gut of Atlantic herring, Clupea harengus L., larvae. General and Comparative Physiology A. 164: 17-20. A 7. Tillner, R., I Rønnestad, T. Harboe, and B. Ueberschär. 2013. Hormonal control of tryptic enzyme activity in Atlantic cod larvae (Gadus morhua): involvement of cholecystokinin during ontogeny and diurnal rhythm. Aquaculture. 402-403: 133-140. A 8. Van Nguyen, M., A-E. Olderbakk Jordal, M. Espe, L. Buttle, H. Van Lai and I. Rønnestad. 2013. Feed intake and brain neuropeptide Y (NPY) and cholecystokinin (CCK) gene expression in juvenile cobia fed plant-based protein diets with different lysine to arginine ratios- Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 165: 328-337 A 9. Andersen, S.M, E. Holen, A. Aksnes, I. Rønnestad, J-E.Zerrahn, M. Espe. 2013. Dietary arginine affects energy metabolism through polyamine turnover in juvenile Atlantic salmon (Salmo Salar). British Journal of Nutrition. 110: 1968-77 A 10. Hamre, M. Yufera, L. Rønnestad I, C. Boglione, L.E.C. Conceição, M. Izquierdo. 2013. Fish larval nutrition and feed formulation - knowledge gaps and bottlenecks for advances in larval rearing - Reviews in Aquaculture. 5: S26-S58 A 11. Rønnestad I, M. Yufera, B. Ueberschär, L. Ribeiro, Ø. Sæle, C. Boglione. 2013. Feeding behaviour and digestion physiology in larval fish ? current knowledge and gaps and bottlenecks in research. Reviews in Aquaculture. 5: S59-S98 A 12. Angotzi, A.R., S.O. Stefansson, T.O. Nilsen, R.M. Rathore, I. Rønnestad. 2013. Molecular cloning and genomic characterization of novel Leptin-like genes in salmonids provide new insight into the evolution of the Leptin gene family. General and Comparative Endocrinology. 187: 48-59 A 13. Kousoulaki, K., I. Rønnestad, H.J. Olsen, R.M. Rathore, P. Campbell, S. Nordrum, R.K. Berge, S.A. Mjøs, T. Kalananthan, S. Albrektsen (2013). Krill hydrolysate free amino acids responsible for feed intake stimulation in Atlantic salmon (Salmo salar). Aquaculture Nutrition. 19: 47-67. A 14. Tillner, R., I Rønnestad, T. Harboe, and B. Ueberschär. 2013. Evidence for a regulatory loop between cholecystokinin (CCK) and tryptic enzyme activity in Atlantic cod larvae (Gadus morhua). Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 166: 490-495. A 15. Tillner, R., I Rønnestad, P. Dehrt, and B. Ueberschär. 2013. Cholecystokinin and tryptic enzyme activity in sea bass (Dicentrarchus labrax) larvae: a regulatory loop and the impact of feeding regimes. Communications in Agricultural and Applied Biological Sciences 78(4): 451-4. A 16. Rathore RM, Angotzi AR, Jordal AE and I. Rønnestad. 2013. Cholecystokinin receptors in Atlantic salmon: Molecular cloning, gene expression and structural basis. Physiological Reports. 1 (5), 2013, e00069 A 17. Chisadaa, S-i., T. Kurokawa, K. Murashita, K., I. Rønnestad, Y. Taniguchie, A. Toyoda, Y. Sakaki, S. Takedae, Y. Yoshiura. 2014. Leptin receptor-deficient (knockout) medaka, Oryzias latipes, show chronical up-regulated levels of orexigenic neuropeptides, elevated food intake and stage specific effects on growth and fat allocation. General and Comparative Endocrinology. 195: 9-20. A 18. Gomes, A.S., Y Kamisaka, T. Harboe, D. Power, I. Rønnestad. 2014. Functional modifications associated with gastrointestinal tract organogenesis during metamorphosis in Atlantic halibut (Hippoglossus hippoglossus) - BMC Developmental Biology. 14: 11. #8 of downloaded papers in Feb 2014 A 19. Tillner, R., I Rønnestad, P. Dehrt, and B. Ueberschär. 2014. The regulatory loop between gut cholecystokinin and tryptic enzyme activity in sea bass (Dicentrarchus labrax) larvae influenced by different feeding regimes and trigger substances. Aquaculture: 419: 139-146. A 20. Van Nguyen, M., I. Rønnestad, L. Buttle, H. Van Lai and M. Espe. 2014. Imbalanced lysine to arginine ratios reduced performance in juvenile cobia (Rachycentron canadum) fed high plant protein diets.- Aquaculture Nutrition. 20: 25-35. A 21. Rønnestad, I., Le, M., Ebbesson, L., Karlsen, Ø., Angotzi, A.R., 2014. Ontogeny of genetic networks underlying central appetite-controlling systems in the teleost Atlantic cod (LB830). The FASEB Journal. 28. A 22. Van Nguyen, M., I. Rønnestad, L. Buttle, H. Van Lai and M. Espe. 2014. Evaluation of a high plant protein test diet for juvenile cobia Rachycentron canadum in comparison to commercial diets. Journal of Agricultural and Crop Research. 2(6): 117-125. A 23. Bogevik, AS., RM. Rathore, T. Atack, J. Treasurer, Y. Arjona, I. Rønnestad and K. Kousoulaki. 2014. Dietary plant oils delay early sexual maturation compared with marine fish oil in male European Sea bass (Dicentrarchus labrax) ? effects on testis histology and key reproductive hormones ? Aquaculture. 431: 73-84 A 24. Rønnestad, I., Y. Akiba, I. Kaji, and J.D. Kaunitz. 2014. Duodenal luminal nutrient sensing. Current Opinion in Pharmacology 14: 67-75 A 25. Espe, M., S.M.Andersen, E. Holen, I. Rønnestad, E. Veiseth-Kent, J-E. Zerrahn, A. Aksnes. Methionine deficiency does not increase polyamine turnover through depletion of liver S-adenosylmethionine (SAM) in juvenile Atlantic salmon. British Journal of Nutrition. 112: 1274-1285. A 26. Gomes, A.S, R.N. Alves, K. Stueber, M.A.S. Thorne, H. Smáradóttir, R. Reinhard, M.S. Clark, I. Rønnestad, and D.M. Power. 2014. Transcriptome of Atlantic halibut (Hippoglossus hippoglossus) ? Marine Genomics. 18: 101-103 A 27. Andersen, S.M, E. Holen, A. Aksnes, I. Rønnestad, J-E.Zerrahn, M. Espe. 2015. Adult Atlantic salmon (Salmo salar L.) adapts to long-term surplus dietary arginine supplementation.- Aquaculture Nutrition. 21: 355-363 A 28. Gomes, A.S., R. Alves, I. Rønnestad and DM Power 2015. Orchestrating change: the thyroid hormones and gi-tract development in flatfish metamorphosis ? General and Comparative Endocrinology. DOI: 10.1016/j.ygcen.2014.06.012 A 29. Salmerón, C., M. Johansson, AR. Angotzi, I. Rønnestad, E. Jönsson, B.Thr. Björnsson, J. Gutiérrez, I. Navarro, E. Capilla. 2015. Effects of nutritional status on plasma leptin levels and in vitro regulation of adipocyte leptin expression and secretion in rainbow trout? General and Comparative Endocrinology. 210: 114-23 A 30. Gomes, A.S., A.-E. Olderbakk Jordal, K. Olsen, T. Harboe, I. Rønnestad. 2015. Neuroendocrine control of appetite in Atlantic halibut (Hippoglossus hippoglossus); changes during metamorphosis and effects of feeding. - Comparative Biochemistry and Physiology A 183: 116-125 A 31. Espe M., Zerrahn J-E, Holen E, Rønnestad I, Veiseth-Kent E, Aksnes A. 2015. Choline supplementation to low methionine diets increase phospholipids in Atlantic salmon, while taurine supplementation had no effects on phospholipid status, but improved taurine status. ? Aquaculture Nutrition. doi. 10.111/anu.12298 A 32. Espe M., Veiseth-Kent E, Zerrahn J-E, Rønnestad I, Aksnes A. 2015. Juvenile Atlantic salmon decrease white trunk muscle IGF-1 expression and reduce muscle and plasma free sulphur amino acids when methionine availability is low while liver sulphur metabolites mostly is unaffected by treatment ? Aquaculture Nutrition. doi: 10.1111/anu.12294 A 33. Karlsen, Ø, A. Mangor-Jensen, K. Hamre, I. Rønnestad, T.F. Galloway, E. Kjørsvik, T. van der Meeren. 2015. Copepods enhance nutrition, growth, and development in Atlantic cod (Gadus morhua L.) larvae. PeerJ 3:e902 https://dx.doi.org/10.7717/peerj.902 A 34. Penglase, S., RB. Edvardsen, T. Furmanek, I. Rønnestad, Ø. Karlsen, T. van der Meeren, K. Hamre. 2015. Diet affects the redox system in developing Atlantic cod (Gadus morhua) larvae. - Redox Biology. 5: 308-318 A 35. Salmerón, C., M. Johansson, AR. Angotzi, I. Rønnestad, S.O. Stefansson, E. Jönsson, B.Thr. Björnsson, J. Gutiérrez, I. Navarro, E. Capilla. 2015. Roles of leptin and ghrelin in adipogenesis and lipid metabolism of rainbow trout adipocytes in vitro ?Comparative Physiology and Biochemistry A 188: 48-48

Group(s): NORDIR
Created: 1999-05-08 Last Updated: 2015-07-06 by Ivar RONNESTAD