- E-postIvar.Ronnestad@uib.no
- Telefon+47 55 58 35 86+47 926 47 219
- BesøksadresseThormølens gate 53 A/B5006 BergenRom341A1
- PostadressePostboks 78035020 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
- (2022). Functional characterization of Atlantic salmon (Salmo salar L.) PepT2 transporters. Journal of Physiology. 2377-2400.
- (2021). The zebrafish cationic amino acid transporter/glycoprotein-associated family: sequence and spatiotemporal distribution during development of the transport system b 0,+ (slc3a1/slc7a9). Fish Physiology & Biochemistry. 1507-1525.
- (2021). Regional Expression of npy mRNA Paralogs in the Brain of Atlantic Salmon (Salmo salar, L.) and Response to Fasting. Frontiers in Physiology. 1329.
- (2021). Physical and nutrient stimuli differentially modulate gut motility patterns, gut transit rate, and transcriptome in an agastric fish, the ballan wrasse. PLOS ONE. 29 sider.
- (2021). Leucine did not stimulate growth and accretion in either stressed or unstressed Atlantic salmon. Aquaculture Nutrition. 2459-2467.
- (2021). Effects of short term fasting on mRNA expression of ghrelin and the peptide transporters PepT1 and 2 in Atlantic salmon (Salmo salar). Frontiers in Physiology. 821.
- (2021). Distribution of npy mRNA in the Brain of Atlantic Salmon (Salmo salar, L.) and Responses to Gastrointestinal Fullness and Fasting.
- (2021). Daily rhythms of intestinal cholecystokinin and pancreatic proteases activity in Senegalese sole juveniles with diurnal and nocturnal feeding. Comparative Biochemistry and Physiology A. 1-9.
- (2021). Brain distribution of ten cart transcripts and their response to 4 days fasting in Atlantic salmon (Salmo salar L.) . Frontiers in Marine Science. 763766.
- (2021). Appetite regulating neuropeptides and their distribution in the Atlantic salmon (Salmo salar) brain.
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
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.