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Ivar Rønnestads bilde

Ivar Rønnestad

Professor
  • E-postIvar.Ronnestad@uib.no
  • Telefon+47 55 58 35 86+47 926 47 219
  • Besøksadresse
    Thormøhlensgt. 53 A/B
    Rom 
    341A1
  • Postadresse
    Postboks 7803
    5020 Bergen

Ivar Rønnestad har arbeidet med studier av fiskens fysiologi siden 1988. Hans hovedforskningsfelt er innen ernæringfysiologi, energiomsetning og fordøyelsesfysiologi hos fisk. Tidligere arbeidet han spesielt på larvestadier, men. For tiden arbeider han med peptidhormoner som er involvert i regulering av appetitt- og energiomsetning, tarm-hjerne aksen, fordøyelsesfysiologi, transportfunksjoner og omsetning av aminosyrer. Studiene skjer i hovedsak på laks, men inkluderer også bl.a torsk, kveite og sebrafisk

Han arbeidet tidligere med dykkefysiologi på NUTEC, der studiene var relatert til temperatur og respirasjon i forbindelse med dypdykking i Nordsjøen (1982-87). Han var også en tid tilknyttet Havbruksstasjonen i Austevoll (1988-89) og arbeidet der med stamfisk. I postdoktorperioden på NIFES (1993-97) arbeidet han med studier av fettsyrer og vitaminer hos fiskelarver. Han har vært ansatt ved Institutt for Biologi (tidligere Zoologisk institutt) fra 1996.

Han har hatt forskningsopphold i Japan (Kyoto University og Kagoshima University), Israel (National Center for Mariculture, Eilat), Portugal (University of Algarve), USA (University of California Los Angeles, UCLA) og har et omfattende nasjonal, europeisk og internasjonal samarbeid.

Han veileder for tiden 5 PhD kandidater og 3 Master studenter ved UiB og utenlandske universitet. Han har tidligere veiledet 11 PhD og 17 Master kandidater samt 4 postdoktorer.

Ivar Rønnestad underviser i fagene BIO104 (Komparativ fysiologi) og BIO 291 (Fiskebiologi II- Fysiologi) i tillegg til veiledning av postdoktor, PhD og Master studenter. Han leder EcelAQUA Sommerskole som er et samarbeide mellom Universitetet i Bergen, NORCE og syv ulike universiteter og forskningsinstitutt i Japan. Sommerskolen har også deltagere fra USA og Canada. 

Gjennom BioCEED har han samarbeid med forskere (Sehoya Cotner and Seth Thompson) innen pedagogikk ved Universitetet i Minnesota.

Han mottok Olav Thon Stiftelsens nasjonale pris for fremragende undervisning i 2019

  • Le, Hoang Thi My Dung; Lie, Kai Kristoffer; Lein, Ingrid; Kousoulaki, Katerina; Rønnestad, Ivar; Sæle, Øystein. 2019. Tarmfunksjon hos berggylte. Norsk Fiskeoppdrett. 44: 50-53.
  • Yufera, Manuel; Nguyen, MV; Navarro-Guillén, Carmen; Moyano, Francisco Javier; Jordal, Ann-Elise Olderbakk; Espe, Marit; Conceicao, LEC; Engrola, Sofia; Le, MH; Rønnestad, Ivar. 2019. Effect of increased rearing temperature on digestive function in cobia early juvenile. Comparative Biochemistry and Physiology A. 230: 71-80. doi: 10.1016/j.cbpa.2019.01.007
  • Hamre, Kristin; Yufera, Manuel; Rønnestad, Ivar; Boglione, Clara; Conceicao, Luis ec; Izquierdo, Marisol S. 2018. Fish Larval Nutrition and Feed Formulation: Knowledge Gaps and Bottlenecks for Advances in Larval Rearing. Chapter 4, sider 123-176. I:
    • Conceicao, Luis ec; Tandler, Amos. 2018. Success Factors for Fish Larval Production. John Wiley & Sons. 512 sider. ISBN: 978-1-119-07213-3.
  • Kousoulaki, Katerina; Rønnestad, Ivar; Rathore, Raja Mansingh; Sixten, Hanne Jorun; Campbell, Paddy; Nordrum, Sigve; Berge, Rolf Kristian; Albrektsen, Sissel. 2018. Physiological responses of Atlantic salmon (Salmo salar L.) fed very low (3%) fishmeal diets supplemented with feeding-modulating crystalline amino acid mixes as identified in krill hydrolysate. Aquaculture. 486: 184-196. doi: 10.1016/j.aquaculture.2017.12.011
  • Le, Hoang Thi My Dung; Rønnestad, Ivar; Lie, Kai Kristoffer; Giroud-Argoud, J.; Sæle, Øystein. 2018. The function of Cholecystokinin (CCK) on gut motility in the stomachless fish Ballan wrasse. Neurogastroenterology and Motility. 30.
  • Lie, Kai Kristoffer; Tørresen, Ole K.; Solbakken, Monica Hongrø; Rønnestad, Ivar; Tooming-Klunderud, Ave; Nederbragt, Alexander Johan; Jentoft, Sissel; Sæle, Øystein. 2018. Loss of stomach, loss of appetite? Sequencing of the ballan wrasse (Labrus bergylta) genome and intestinal transcriptomic profiling illuminate the evolution of loss of stomach function in fish. BMC Genomics. 19: 1-17. doi: 10.1186/s12864-018-4570-8
  • Murashita, Koji; Matsunari, Hiroyuki; Furuita, Hirofumi; Rønnestad, Ivar; Oku, Hiromi; Yamamoto, Takeshi. 2018. Effects of dietary soybean meal on the digestive physiology of red seabream Pagrus major. Aquaculture. 493: 219-228. doi: 10.1016/j.aquaculture.2018.05.005
  • Murashita, Koji; Rønnestad, Ivar; Furuita, Hirofumi; Matsunari, Hiroyuki; Oku, Hiromi; Yamamoto, Takeshi. 2018. Effects of dietary soybean meal on the bile physiology in rainbow trout, Oncorhynchus mykiss. Aquaculture. 490: 303-310. doi: 10.1016/j.aquaculture.2018.02.047
  • Nguyen, Minh Van; Espe, Marit; Conceição, Louis E.C.; Le, Hoang Minh; Yúfera, Manuel; Engrola, Sofia A.D.; Jordal, Ann-Elise Olderbakk; Rønnestad, Ivar. 2018. The role of dietary methionine concentrations on growth, metabolism and N-retention in cobia (Rachycentron canadum) at elevated water temperatures. Aquaculture Nutrition. 1-13. doi: 10.1111/anu.12875
  • Rønnestad, Ivar; Yufera, Manuel; Ueberschär, Bernd; Ribeiro, Laura; Sæle, Øystein; Boglione, Clara. 2018. Feeding behaviour and digestion physiology in larval fish: current knowledge and gaps and bottlenecks in research. Chapter 3, sider 55-122. I:
    • Conceicao, Luis ec; Tandler, Amos. 2018. Success Factors for Fish Larval Production. John Wiley & Sons. 512 sider. ISBN: 978-1-119-07213-3.

Se fullstendig oversikt over publikasjoner i CRIStin.

Ivar Rønnestad har hovedfag (cand scient) i zoologisk og human fysiologi (1984) og dr. grad (dr. scient) i miljøfysiologi (1993) begge fra Universitetet i Bergen.

NORAD- QZA-0485 SRV-13/0010: Incorporating Climate Change into Ecosystem Approaches to Fisheries & Aquacult. Managm in Sri Lanka and Vietnam (partner w/ Nha Trang Univ, Univ o Ruhuna and Univ of Tromsø)  2014-17

NFR: Intestinal function and health in Ballan wrasse – No Guts, no Glory (partner with NIFES and NOFIMA; Grant No 244170)  2015-18

Spanish Ministry of Economic Affairs and Competitiveness- National Research Programme. Utilization of gastrointestinal models as a tool for increasing the digestion efficiency of feed protein in cultured marine fish. – EFISFDIGEST (partner w/ Inst. Ciencias Marinas de Andalucía, Cadiz, Spain)  2015-18

RFF, Regional Forskningsfond: Improved feed for salmon through the selection of protein ingredients based on their functional properties (partner with EWOS innovation; Grant No 247978)  2015-18

H2020-MARIE Skłodowska-CURIE ACTIONS. Research and Innovation Staff Exchange. RISE. WiseFeed. Improving sustainability and performance of aquafeeds.  (Coordinator and PI; Grant No 691150)

NFR: Digestion and maternal/paternal transfer of microplastic contaminants in  Atlantic cod (Gadus morhua) food web (partner with NOFIMA and PI)  2016-18

Fundação para a Ciência e Tecnologia Portugal. Towards fishmeal-independent fish diets: the role of taurine (TOWTAU, PTDC/MAR/117047/2010) (partner w/CCMAR). 2012-2014

Spanish Ministry of Science and Innovation Assessment of daily rhythm in the feeding activity and the digestive function in reared larvae of marine fish. Improving the feeding protocols. (partner w/ Inst. Ciencias Marinas de Andalucía, Cadiz, Spain) 2011-13

NFR. Integrated amino acid requirement in Atlantic salmon (contracted partner w EWOS Innovation;Grant # 208352) 2011-13

NFR. CODE- a national knowledge platform for the early stages of Atlantic cod (Leader and PI). (#199482) 2010-14

NFR: Local effects of global warming: Effects of period of higher temperature than the normal range for Atlantic salmon. (contracted partner w NIFES; yngre fremragende forsker tildelt E.M Hevrøy # 199683) 2010-13

NFR: BIOplus. Innovative use of bioactive marine ingredients as strategy to sustain growth in fish farming prod. and to improve fish flesh quality. (contracted partner w NOFIMA; Grant # 190043). 2009-12

NFR: GutFeeling. New feeding strategies for Atlantic halibut and cod larvae to increase the output of high quality juveniles in production systems. (w partners IMR #190019) 2009-11

EU- FP7-KBBE-2007-2A. LIFECYCLE. Building a biological knowledge-base on fish lifecycles for competitive, sustainable European aquaculture. (Collaborative project, Large scale Integrating Project, Partner) 2009- 13

Helse Vest & UoB: NettMettBAP. Bioactive peptides. 2009

Fundação para a Ciência e Tecnologia Portugal. Improved dietary nitrogenformulations for marine fish larvae: effects on growth performance and skeletal formation - HYDRAA (PTDC/MAR/71685/2006)(partner w/CCMAR) 2008-11

NFR: DGS- Distended gut syndrome in larval Atlantic cod (Gadus morhua). (w industry partner SagaFjord SeaFarm #187281) 2008-09

NORAD- SRV 2701 Improving training and Research Capacity at the Nha Trang University, Vietnam- Phase II (UiT, UiB, NTNU, NUT) 2008- 12

Helse Vest & UoB: NettMettBAC. Bioactive compounds- absorption and function 2008

BTO: Hydroxyproline as an essential component in fish and animal nutrition. (contracted partner w Fiskeriforskning) 2008

NFR- Development of endocrine and digestive systems in marine fish larvae (#187063; Leiv Erikssson) 2008

NFR: Ontogeny of lipid digestion and effects of feeding pre-digested lipids to cod larvae (#179016, partner w/ proj leader NIFES; FF and IMR) 2007-09

Helse Vest & UoB: NettMett2. Network for metabolic collaborative studies in Bergen 2007

AVIT-NFR: Gene expression analysis platform (GExAP-RNA) #183740 2007

NFR: Leptin in fish - exploring the actions of a novel hormone and its role in control of appetite, growth and puberty in Atlantic salmon and cod (#172548/S40) 2006-08

NFR: Genes linked to normal development and survival of fish larvae. Strategic programme (headed by Dept. Molecular biology, UoB) 2006-08

NFR: CodGut-Digestive function in Atlantic cod larvae- effects of intensive and extensive rearing systems and correlation with peaks in mortality. (w industry partner SagaFjord SeaFarm #174229/S15) 2006-07

BILAT: PepTalk- Project establishment support for studies on peptide nutrition growth and dev. of larval fish between Norway and USA (#175021) 2006

Scandinavia - Japan Sasakawa foundation, Travel Support 2006

FUGE: Puberty in Atlantic cod (industry partner Marine Harvest) 2006

NFR: Differential protein expression in relation to dietary AA composition: a proteomic approach towards understanding growth in fish (#165203/S40) 2005-08

UoB, Marine Science Programme, Research Locus support 2005-08

Fundação para a Ciência e Tecnologia Portugal. Dietary amino acids and skeletal development in white bream - SAARGO (POCI/MAR/61623/2004) (partner w CCMAR) 2005-08

Helse Vest & UoB: NETTMETT. Network for metabolic collaborative studies in Bergen 2005-06

NFR: Intensive production of halibut fry - Larviculture and nutrition. (partner; w/ NIFES and Inst. of Mar Research; # 152932/120.) 2003-05

MariPro- NFR (partner): Use of protein and hydrolysate in Microdiets 2003

NFR: Functional development of the gut in marine fish larvae (#141990/120) 2001-03

NFR: Nutrition in larvae and juveniles of the Atlantic halibut Strategic programme (partner and steering committee member. w/ IoN, IMR) 2001-03

Meltzer Foundation UoB; Functional development of marine fish larvae 2001

UoB, Marine Science Programme, Research Locus support 2000-2004

NFR, Ontogeny of digestive function in fish larvae (#138382/140) 2000

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