Olav Kjesbu

Forskningssjef
Telefon: 93047611
Avdeling: Marine økosystemer og ressurser

Arbeidsområde

  • Rekrutteringsbiologi
  • Reproduksjonsbiologi
  • Veiledning av studenter
  • Prosjektledelse, ulike prosjekter

Curriculum Vitae

Havforskningsinstituttet, Postboks 1870, 5817 Bergen

Tlf.: 55238500 (sentralbord); Mobil: 93047611
Faks: 55238555
E-post: olav.kjesbu@imr.no

Utdannelse
1988: Dr. scient ., Institutt for fiskeribiologi, Universitetet i Bergen
1982: Cand. scient ., Institutt for fiskeribiologi, Universitetet i Bergen
1979-1982: Universitet i Bergen (Mat.Nat.)
1975-1978: Universitet i Oslo (Mat.Nat)

Ansettelser

Mars 2017 -: Forskningssjef

Mai 2014 - mars 2017 : Direktør, Hjortsenteret f or marin økosystemdy (forskningsnettverk mellom HI, UiB, Nansensenteret og Uni Research, ca. 100 forskere)

Mai 2010 - september 2014: Forskningsgruppeleder "Bunnfisk"

September 2012 - september 2016: Professor-II CEES

2004-2007: Faggruppeleder : ’Rekruttering og atferdsbiologi’
2001-2003: Programleder : ‘Reproduksjon og tidliger livsstadier hos fisk og skalldyr’
1997-2000: Programlede r: ‘Reproduksjn og rekruttering’
1996: Seniorforsker (1183)
1988: Forsker (1009)
1985-1988: Utdanningsstipendiat , Norges Fiskeriforskningsråd
1984-1985: Lektor (Voss Gymnas)

Gjesteforsker
2000: The Southwest Fisheries Science Center, La Jolla, California, USA (NFR) (3 mnd)
1991/1992: The Fisheries Laboratory, Lowestoft, England (NFR) (6 mnd.)
1986  og 1987: The Fisheries Laboratory, Lowestoft, England (NFR) (flere reisestipend)

Publikasjoner

Vitenskapelige artikler (NVI)

2017

Ontogenetic development of otolith shape during settlement of juvenile Barents Sea cod (Gadus morhua)

Christian Irgens, Olav Sigurd Kjesbu, Arild Folkvord
ICES Journal of Marine Science 74 p. 2389-2397
2017

Oogenesis and reproductive investment of Atlantic herring are functions of not only present but long-ago environmental influences as well

Thassya Christina dos Santos Schmidt, Aril Slotte, James Kennedy, Svein Sundby, Arne Johannessen, Gudmundur Jóhann Óskarsson, Yutaka Kurita, Nils Christian Stenseth, Olav Sigurd Kjesbu
Proceedings of the National Academy of Sciences of the United States of America 114 p. 2634-2639
2017

Oogenesis and reproductive investment of Atlantic herring are functions of not only present but long-ago environmental influences as well

Schmidt, T. C. D., A. Slotte, J. Kennedy, S. Sundby, A. Johannessen, G. J. Oskarsson, Y. Kurita, N. C. Stenseth, and O. S. Kjesbu
PNAS 114 p. 2634-2639
2017

Timecourse of oocyte development in saithe Pollachius virens

Jon Egil Skjæraasen, Jennifer Ann Devine, Jane Aanestad Godiksen, Merete Fonn, Håkon Magne Otterå, Olav Sigurd Kjesbu, Birgitta Norberg, Øystein Langangen, Ørjan Karlsen
Journal of Fish Biology 90 p. 109-128
2016

Contrasting batch fecundity estimates of albacore (Thunnus alalunga), an indeterminate spawner, by different laboratory techniques

Sámar Saber, David Macías, Josetxu Ortiz de Urbina, Olav Sigurd Kjesbu
Fisheries Research 176 p. 76-85
2016

Reproductive tactics of male bearded goby (Sufflogobius bibarbatus) in anoxic and hypoxic waters

Maria Larsen Seivåg, Anne Gro Vea Salvanes, Anne Christine Utne-Palm, Olav Sigurd Kjesbu
Journal of Sea Research 109 p. 29-41
2016

The North Atlantic spring-bloom system-where the changing climate meets the winter dark

Svein Sundby, Kennneth F. Drinkwater, Olav Sigurd Kjesbu
Frontiers in Marine Science 3:28 p. 1-12
2016

Preferential amplification of repetitive DNA during whole genome sequencing library creation from historic samples

Bastiaan Star, Marianne Helén Selander Hansen, Morten Skage, Ian R. Bradbury, Jane Amtoft Godiksen, Olav Sigurd Kjesbu, Sissel Jentoft
Science and Technology of Archaeological Research 2 p. 36-45
2016

Per Solemdal (1941-2016) – an unconventional marine Scientist

Olav Sigurd Kjesbu, Svein Sundby
Marine Biology Research 12 p. 559-662
2015

Ecosystem processes are rarely included in tactical fisheries management

Mette Skern-Mauritzen, Geir Ottersen, Nils Olav Handegard, Geir Huse, Gjert Endre Dingsør, Nils Christian Stenseth, Olav Sigurd Kjesbu
Fish and Fisheries 17 p. 165-175
2015

Recent advances in statistical methodology applied to the Hjort liver index time series (1859-2012) and associated influential factors

Gudmund Horn Hermansen, Nils Lid Hjort, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 73 p. 279-295
2015

Stereological comparison of oocyte recruitment and batch fecundity estimates from paraffin and resin sections using spawning albacore (Thunnus alalunga) ovaries as a case study

Sámar Saber, David Macías, Josetxu Ortiz de Urbina, Olav Sigurd Kjesbu
Journal of Sea Research 95 p. 226-238
2015

Skipped spawning in Northeast Arctic haddock Melanogrammus aeglefinus

Jon Egil Skjæraasen, Knut Korsbrekke, Trygve Nilsen, Merete Fonn, Olav Sigurd Kjesbu, Gjert Endre Dingsør, Richard David Marriott Nash
Marine Ecology Progress Series 526 p. 143-155
2015

Connecting the seas of Norden

Øyvind Paasche, Henrik Österblom, Stefan Neuenfeldt, Erik Bonsdorff, Keith M. Brander, Daniel Conley, Joel Marcel Durant, Anne Maria Eikeset, Anders Goksøyr, Steingrímur Jónsson, Olav Sigurd Kjesbu, Anna Kuparinen, Nils Christian Stenseth
Nature Climate Change 5 p. 89-92
2014

Variability of northeast Arctic cod (Gadus morhua) distribution on the main spawning grounds in relation to biophysical factors

Hannes Höffle, Per Solemdal, Knut Korsbrekke, Magnus Einar Johannessen, Kjell Gunnar Bakkeplass, Olav Sigurd Kjesbu
ICES Journal of Marine Science 71 p. 1317-1331
2014

Experimental parameterisation of principal physics in buoyancy variations of marine teleost eggs

Kyung Mi Jung, Arild Folkvord, Olav Sigurd Kjesbu, Svein Sundby
PLoS ONE 9
2014

Synergies between climate and management for Atlantic cod fisheries at high latitudes

Olav Sigurd Kjesbu, Bjarte Bogstad, Jennifer Ann Devine, Harald Gjøsæter, Daniel Howell, Randi Ingvaldsen, Richard David Marriott Nash, Jon Egil Skjæraasen
Proceedings of the National Academy of Sciences of the United States of America 111 p. 3478-3483
2014

Making use of Johan Hjort's "unknown" legacy: Reconstruction of a 150-year coastal time-series on northeast Arctic cod (Gadus morhua) liver data reveals long-term trends in energy allocation patterns

Olav Sigurd Kjesbu, Anders Frugård Opdal, Knut Korsbrekke, Jennifer Ann Devine, Jon Egil Skjæraasen
ICES Journal of Marine Science 71 p. 2053-2063
2013

A simulation framework for evaluating fisheries management decisions using environmental information

Dankert W. Skagen, Mette Skern-Mauritzen, Dorothy Dankel, Katja Enberg, Olav Sigurd Kjesbu, Richard David Marriott Nash
ICES Journal of Marine Science 70 p. 743-754
2013

Reproductive biology of horse mackerel Trachurus capensis and Trachurus trecae in Namibia and Angola

Hilkka Opolili Ndahafa Ndjaula, Jens-Otto Krakstad, Olav Sigurd Kjesbu
African Journal of Marine Science 35 p. 141-150
2013

Contrasting development and delivery of realised fecundity in Atlantic cod (Gadus morhua) stocks from cold and warm waters

Peter R. Witthames, Michael Armstrong, Anders Thorsen, Per Solemdal, Olav Sigurd Kjesbu
Fisheries Research 138 p. 128-138
2013

Size-, energy- and stage dependent fecundity and atresia in the Northeast Arctic haddock Melanogrammus aeglefinus

Jon Egil Skjæraasen, Knut Korsbrekke, Olav Sigurd Kjesbu, Merete Fonn, Trygve Nilsen, Richard David Marriott Nash
Fisheries Research 138 p. 120-127
2013

Strategies for partition between body growth and reproductive investment in migratory and stationary populations of spring-spawning Atlantic herring (Clupea harengus L.)

Filipa Fernandes da Silva, Aril Slotte, Arne Johannessen, James Kennedy, Olav Sigurd Kjesbu
Fisheries Research 138 p. 71-79
2012

Egg buoyancy variability in local populations of Atlantic cod (Gadus morhua)

Kyung Mi Jung, Arild Folkvord, Olav Sigurd Kjesbu, Ann-Lisbeth Agnalt, Anders Thorsen, Svein Sundby
Marine Biology 159 p. 1969-1980
2012

Frequent skipped spawning in the world's largest cod population

Jon Egil Skjæraasen, Richard David Marriott Nash, Knut Korsbrekke, Merete Fonn, Trygve Nilsen, James Kennedy, Kjell Harald Nedreaas, Anders Thorsen, Peter R. Witthames, Audrey J. Geffen, Hans Høie, Olav Sigurd Kjesbu
Proceedings of the National Academy of Sciences of the United States of America 109 p. 8995-8999
2012

Dynamics of de novo vitellogenesis in fish with indeterminate fecundity: an application of oocyte packing density theory to European anchovy, Engraulis encrasicolus

Eudoxia Schismenou, Stylianos Somarakis, Anders Thorsen, Olav Sigurd Kjesbu
Marine Biology 159 p. 757-768
2012

Emergence of an oocytic circumnuclear ring in response to increasing day length in Atlantic herring (Clupea harengus)

Lindsay R. McPherson, Olav Sigurd Kjesbu
Marine Biology 159 p. 341-353
2012

Extent and ecological importance of escape through spawning in sea-cages for Atlantic cod

Ingebrigt Uglem, Øyvind Knutsen, Olav Sigurd Kjesbu, Øyvind J Hansen, Jarle Mork, Pål Arne Bjørn, Rebekka Varne, Rune Nilsen, Ingrid H. Ellingsen, Timothy David Dempster
Aquaculture Environment Interactions 3 p. 35-51
2012

Is spawning time of marine fish imprinted in the genes? A two-generation experiment on local Atlantic cod (Gadus morhua L.) populations from different geographical regions

Håkon Magne Otterå, Ann-Lisbeth Agnalt, Anders Thorsen, Olav Sigurd Kjesbu, Geir Dahle, Knut Eirik Jørstad
ICES Journal of Marine Science 69 p. 1722-1728
2012

Seasonal trends in adenylate nucleotide content in eggs of recruit and repeat spawning Atlantic cod (Gadus morhua L.) and implications for egg quality and buoyancy

Kyung Mi Jung, Asbjørn M. Svardal, Torunn Eide, Anders Thorsen, Olav Sigurd Kjesbu
Journal of Sea Research 73 p. 63-73
2011

Greenland halibut (Reinhardtius hippoglossoides) spawn annually but successive cohorts of oocytes develop over 2 years, complicating correct assessment of maturity

James Kennedy, Agnes Christin Gundersen, Åge Sigurd Høines, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 68 p. 201-209
2011

Sexual dimorphism of drumming muscles in European hake (Merluccius merluccius)

Anne-Laure Groison, O. S. Kjesbu, Marc Suquet
Environmental Biology of Fishes 91 p. 7-13
2011

Evaluation of the frequency of skipped spawning in Norwegian spring-spawning herring

James Kennedy, Jon Egil Skjæraasen, Richard David Marriot Nash, Aril Slotte, Audrey J. Geffen, Olav S. Kjesbu
Journal of Sea Research 65 p. 327-332
2011

The role of fecundity regulation and abortive maturation in the reproductive strategy of Norwegian spring-spawning herring (Clupea harengus)

James Kennedy, Richard David Marriot Nash, Aril Slotte, Olav S Kjesbu
Marine Biology 158 p. 1287-1299
2011

Quantification of primary and secondary oocyte production in Atlantic cod (Gadus morhua) by simple oocyte packing density theory

Olav Sigurd Kjesbu, Anders Thorsen, Merete Fonn
Marine and Coastal Fisheries 3 p. 92-105
2010

The fate of vitellogenic follicles in experimentally monitored Atlantic cod Gadus morhua (L.): Application to stock assessment

Peter R. Witthames, Anders Thorsen, Olav Sigurd Kjesbu
Fisheries Research 104 p. 27-37
2010

Investment in maturity-at-age and -length in northeast Atlantic cod stocks

Richard David Marriott Nash, Graham M. Pilling, Laurence T. Kell, Pieter-Jan Schön, Olav Sigurd Kjesbu
Fisheries Research 104 p. 89-99
2010

Thermal dynamics of ovarian maturation in Atlantic cod (Gadus morhua)

Olav Sigurd Kjesbu, David Righton, Maria Krüger-Johnsen, Anders Thorsen, Kathrine Michalsen, Merete Fonn, Peter R. Witthames
Canadian Journal of Fisheries and Aquatic Sciences 67 p. 605-625
2010

Rebuilding depleted fish stocks: biology, ecology, social science, and management strategies

Cornelius Hammer, Olav Sigurd Kjesbu, Gordon H. Kruse, Peter A. Shelton
ICES Journal of Marine Science 67 p. 1825-1829
2010

How are the oocytes recruited in an indeterminate fish? Applications of stereological techniques along with advanced packing density theory on European hake (Merluccius merluccius L.)

Maria Korta, Hilario Murua, Yutaka Kurita, Olav Sigurd Kjesbu
Fisheries Research 104 p. 56-63
2010

Fecundity and growth of Atlantic cod (Gadus morhua L.) along a latitudinal gradient

Anders Thorsen, Peter R. Witthames, Gudrun Marteinsdóttir, Richard David Marriott Nash, Olav Sigurd Kjesbu
Fisheries Research 104 p. 45-55
2010

The reproductive cycle of female Ballan wrasse, Labrus bergylta, in high latitude, temperate waters

Simon Muncaster, Eva Andersson, Olav Sigurd Kjesbu, Geir Lasse Taranger, Anne Berit Skiftesvik, Birgitta Norberg
Journal of Fish Biology p. 494-511
2010

Some characteristics of sperm motility in European hake (Merluccius merluccius, L., 1758)

Anne-Laure Groison, Christian Fauvel, Marc Suquet, Olav Sigurd Kjesbu, Jean-René Le Coz, Ian Mayer, Jacky Cosson
Journal of Applied Ichthyology 26 p. 682-689
2010

Sperm motility in European hake, Merluccius merluccius, and characterization of its spermatozoa concentration and volume, spermatocrit, osmolality and pH

Anne-Laure Groison, Marc Suquet, Jacky Cosson, Ian Mayer, Armelle Severe, Jean-Marie Bouquet, Audrey J. Geffen, Anne Christine Utne-Palm, Olav Sigurd Kjesbu
Aquaculture 301 p. 31-36
2010

Long-term changes in the total egg production of Norwegian spring-spawning herring Clupea harengus (L.)—Implications of variations in population structure and condition factor

Hilkka Opolili Ndahafa Ndjaula, Richard David Marriot Nash, Aril Slotte, Arne Johannessen, Olav Sigurd Kjesbu
Fisheries Research 104 p. 19-26
2010

The reproductive cycle of female Ballan wrasse Labrus bergylta in high latitude, temperate waters

Simon Muncaster, E Andersson, Olav S Kjesbu, Geir Lasse Taranger, Anne Berit Skiftesvik, B Norberg
Journal of Fish Biology 77 p. 494-511
2010

Stereological calibration of the profile method to quickly estimate atresia levels in fish

Olav Sigurd Kjesbu, Merete Fonn, Barbara Dunia Gonzales, Trygve Nilsen
Fisheries Research 104 p. 8-18
2010

Do capital breeders like Atlantic herring (Clupea harengus) exhibit sensitive periods of nutritional control on ovary development and fecundity regulation?

James Kennedy, Jon Egil Skjæraasen, Richard David Marriot Nash, Anders Thorsen, Aril Slotte, Tom Hansen, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 67 p. 16-27
2010

Liver energy, atresia and oocyte stage influence fecundity regulation in Northeast Arctic cod

Jon Egil Skjæraasen, Richard David Marriot Nash, James Kennedy, Anders Thorsen, Trygve Nilsen, Olav Sigurd Kjesbu
Marine Ecology Progress Series 404 p. 173-183
2009

Advances in methods for determining fecundity: application of the new methods to some marine fishes

Peter R. Witthames, Anders Thorsen, Hilario Murua, Francisco Saborido-Rey, Lorraine N. Greenwood, Rosario Dominguez, Maria Korta, Olav Sigurd Kjesbu
Fishery Bulletin 107 p. 148-164
2009

Fecundity estimation by oocyte packing density formulae in determinate and indeterminate spawners: Theoretical considerations and applications

Yutaka Kurita, Olav Sigurd Kjesbu
Journal of Sea Research 61 p. 188-196
2009

Effects of egg size, parental origin and feeding conditions on growth of larval and juvenile cod Gadus morhua

H. Paulsen, Olav Sigurd Kjesbu, V. Buehler, R.A.J. Case, C. Clemmesen, G. Carvalho, L. Hauser, William F. Hutchinson, Erlend Moksness, Håkon Magne Otterå, Anders Thorsen, Terje Svåsand
Journal of Fish Biology 75 p. 516-537
2009

Fecundity, atresia, and spawning strategies of Atlantic herring (Clupea harengus)

Cindy JG van Damme, Mark Dickey-Collas, Adriaan D. Rijnsdorp, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 66 p. 2130-2141
2009

Effect of feeding ration on gonad maturation and fat accumulation in Peruvian anchovy (Engraulis ringens Jenyns, 1842) in captivity

Carlos Espinoza, Victor Vera, Angel Perea, Betsy Buitron, Pablo Rojas, Olav Sigurd Kjesbu
Latin American Journal of Aquatic Research 37 p. 181-190
2009

Mechanisms regulating oocyte recruitment and skipped spawning in Northeast Arctic cod (Gadus morhua)

Jon E. Skjæraasen, James Kennedy, Anders Thorsen, Merete Fonn, Bente Njøs Strand, Ian Mayer, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 66 p. 1582-1596
2009

Oocyte development in captive Atlantic horse mackerel Trachurus trachurus

Hilkka Opolili Ndahafa Ndjaula, Tom Hansen, Maria Krüger-Johnsen, Olav Sigurd Kjesbu
ICES Journal of Marine Science 66 p. 623-630
2009

Mechanisms regulating oocyte recruitment and skipped spawning in Northeast Arctic cod (Gadus morhua)

Jon Egil Skjæraasen, James Kennedy, Anders Thorsen, Merete Fonn, Bente Njøs Strand, Ian Mayer, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 66 p. 1582-1596
2008

Potential variability in the paternal contribution to stock reproductive potential of Northeast Arctic cod (Gadus morhua)

Richard D.M. Nash, Olav S Kjesbu, Edward A. Trippel, Heidi Finden, Audrey J. Geffen
Journal of Northwest Atlantic Fishery Science 41 p. 71-83
2007

Merluccius capensis spawn in Namibian waters, but do M. paradoxus?

Paulus I. Kainge, Olav Sigurd Kjesbu, Anders Thorsen, Anne Gro Vea Salvanes
South African Journal of Marine Science 29 p. 379-392
2006

Continuous light delay sexual maturation and increase growth of Atlantic cod (Gadus morhua L.) in sea cages

Leiv Å. Aardal, Geir Lasse Taranger, Tom Johnny Hansen, Olav Sigurd Kjesbu
ICES Journal of Marine Science 63 p. 365-375
2006

Effects of photoperiod and exercise on growth, liver size, and age at puberty in farmed Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Birgitta Norberg, Olav Sigurd Kjesbu, Geir Lasse Taranger
ICES Journal of Marine Science 63 p. 355-364
2006

Timing and determination of potential fecundity in Atlantic cod (Gadus morhua)

Jon Egil Skjæraasen, Trygve Nilsen, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 63 p. 310-320
2003

Gonadal development and associated changes in relative liver size and sexual steroids during the reproductive cycle of captive male and female Atlantic cod (Gadus morhua L.)

Roy Dahle, Geir Lasse Taranger, Ørjan Karlsen, Olav Sigurd Kjesbu, Birgitta Norberg
Comparative Biochemistry and Physiology - Part A: Comparative Physiology 136 p. 641-653
2001

Growth, gonadal development and spawning time of Atlantic cod (Gadus morhua) reared under different photoperiods

Tom Johnny Hansen, Ørjan Karlsen, Geir Lasse Taranger, Gro Ingunn Hemre, Jens Christian Holm, Olav Sigurd Kjesbu
Aquaculture 203 p. 51-67
2000

Fecundity and recruitment variability of Northeast Arctic Greenland halibut during 1980-1998, with emphasis on 1996-1998

Agnes Christine Gundersen, Kjell Harald Nedreaas, Olav Sigurd Kjesbu, Ole Thomas Albert
Journal of Sea Research 4 p. 45-54
2000

Effects of fish size on spawning time in Norwegian spring spawning herring (Clupea harengus L.)

Aril Slotte, Arne Johannessen, Olav Sigurd Kjesbu
Journal of Fish Biology 56 p. 295-310
2000

Effects of fish size on spawning time in Norwegian spring spawning herring (Clupea harengus L.)

A. Slotte, Arne Johannessen, O.S. Kjesbu
Journal of Fish Biology 56 p. 295-310
1999

Effects of fish size on spawning time in Norwegian spring spawning herring

A. Slotte, Arne Johannessen, O.S. Kjesbu
Journal of Fish Biology 55 p. 00
1998

Is spawner biomass a sensitive measure of the reproductive and recruitment potential of Northeast Arctic cod?

C. Tara Marshall, Olav Sigurd Kjesbu, Nathalia A. Yaragina, Per Solemdal, Øyvind Ulltang
Canadian Journal of Fisheries and Aquatic Sciences 55 p. 1766-1783
1996

Physiological mechanisms of buoyancy in eggs from brackish water cod

A. Thorsen, O. S. Kjesbu, Hans Jørgen Fyhn, P. Solemdal
Journal of Fish Biology 48 p. 457-477
1995

Effects of periodic starvation on reproductive investment in first-time spawning Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Olav Sigurd Kjesbu, Jens Christian Holm
Aquaculture 3 p. 159-170
1994

Growth and survival of cod larvae (Gadus morhua L.): comparative enclosure studies of Northeast Arctic cod and coastal cod from western Norway.

Terje van der Meeren, Knut Eirik Jørstad, Per Solemdal, Olav Sigurd Kjesbu
ICES Marine Science Symposia 198 p. 633-645
1992

Buoyancy variations in eggs of Atlantic cod (Gadus morhua L.) in relation to chorion thickness and egg size, theory and observations

Olav Sigurd Kjesbu, Harald Kryvi, Svein Sundby, Per Solemdal
Journal of Fish Biology 41 p. 581-599

Poster

2015

Does historic DNA provide genomic evidence for recent selection in Atlantic cod?

Bastiaan Star, Sissel Jentoft, Michael Matschiner, Alexander Johan Nederbragt, Olav Sigurd Kjesbu, Paul Ragnar Berg, Ian R. Bradbury, Christophe Pampoulie, Marianne Helén Selander Hansen, Morten Skage, Kjetill Sigurd Jakobsen, Nils Christian Stenseth
2015

Fluctuations in life history traits of sexually mature Norwegian spring-spawning herring (Clupea harengus L.) over the last two decades mediated by ocean temperature and density-dependent effects.

Thassya Christina dos Santos Schmidt, Aril Slotte, Arne Johannessen, Olav Sigurd Kjesbu
2014

Reproduction and growth of the suboxia tolerant bearded goby on the Namibian shelf

Anne Gro Vea Salvanes, Maria Larsen Seivåg, Yusra Taha, Henrik Christiansen, Olav Sigurd Kjesbu, Arild Folkvord, Anne Christine Utne-Palm, Werner Ekau, Anja van der Plaz, Andreas Neumann, Christina Henseler
2014

Otoliths as life history indicators

Jane Amtoft Godiksen, Audrey J. Geffen, Arild Folkvord, Jon-Ivar Westgaard, Torild Johansen, Ole Thomas Albert, Arved Staby, Alf Harbitz, Aril Slotte, Christian Irgens, Olav Sigurd Kjesbu
2014

Spawning zones in cod otoliths: Do they really reflect spawning?

Christian Irgens, Arild Folkvord, Olav Sigurd Kjesbu
2014

Experimental study of post-ovulatory follicles in saithe (Pollachius virens) for validation of otolith spawning zones

Jane Amtoft Godiksen, Håkon Magne Otterå, Olav Sigurd Kjesbu
2013

Density-dependent post-recruitment dynamics in the Northeast Arctic and North Sea saithe

Jennifer A Devine, Sigbjørn Mehl, Åge Fotland, Irene Huse, Richard David Marriott Nash, Olav Sigurd Kjesbu
2013

Environmental and demographic Controls on the distribution of North East Arctic cod spawning around the Lofoten Islands

Hannes Höffle, Magnus Einar Johannessen, Knut Korsbrekke, Kjell Gunnar Bakkeplass, Olav Sigurd Kjesbu
2013

Can otoliths and post-ovulatory follicles tell the spawning history of saithe (Pollachius virens)

Jane Amtoft Godiksen, Merete Fonn, Lisbet Solbakken, Anders Thorsen, Olav Sigurd Kjesbu
2011

Skipped spawning in Northeast Arctic gadoids

Jon Egil Skjæraasen, Knut Korsbrekke, Olav Sigurd Kjesbu, Richard David Marriott Nash
2009

The incidence of skipped spawning in Northeast Arctic gadoids

Jon Egil Skjæraasen, James Kennedy, Richard David Marriott Nash, Anders Thorsen, Olav Sigurd Kjesbu
2007

Frequency of skipped spawning in Norwegian spring-spawning herring

James Kennedy, Jon Egil Skjæraasen, Richard David Marriott Nash, Aril Slotte, Olav Sigurd Kjesbu
2006

Oocyte development in Atlantic cod (Gadus morhua L.): Trypsin-like specific activity, capacity for protein synthesis and proteomics

Krisna Rungruangsak-Torrissen, Hilde Kristin Garberg, Anders Thorsen, Olav Sigurd Kjesbu, Frank Nilsen, Kari Espolin Fladmark

Kapitler og bøker

2017

Hav er meir enn vatn

Ann-Lisbeth Agnalt, Sissel Andersen, Lars Asplin, Lene Buhl-Mortensen, Pål Buhl-Mortensen, Caroline Durif, Tone Falkenhaug, Jan Helge Fosså, kjersti lie Gabrielsen, Olav Rune Godø, Marie Hauge, Solfrid Sætre Hjøllo, Børge Holte, Vivian Husa, Olav Sigurd Kjesbu, Tina Kutti, Stein Mortensen, Leif Nøttestad, Lise Doksæter Sivle, Anne Berit Skiftesvik, Øystein Skaala, Tore Strohmeier, Svein Sundby, Vidar Wennevik, Anne Gro Vea Salvanes, Christofer Troedsson, Lasse Pettersson, Annette Samuelsen

Populærvitenskapelige artikler

2016

Bergen: der hav, biologi og Johan Hjort møttes

Vera Schwach, Olav Sigurd Kjesbu
Årbok for Universitetsmuseet i Bergen p. 53-69
2016

Johan Hjort Symposium on Recruitment Dynamics and Stock Variability. Symposium overview and background.

Olav Sigurd Kjesbu, C. Tara Marshall, Richard David Marriott Nash, Svein Sundby, Brian Rothschild, Michael Sinclair
Canadian Journal of Fisheries and Aquatic Sciences 73 p. vii-xi

Faglige foredrag

2016

Plenty of cod in the Barents Sea ̶ an effect of climate or fisheries management?

Kjesbu, Olav Sigurd
2016

Nordatlanterens våroppblomstringssystem - der hvor klimaendringene møter vintermørket

Svein Sundby, Kennneth F. Drinkwater, Olav Sigurd Kjesbu
2016

Reproductive ecology of Atlantic cod: scope, concepts and methods of study at IMR, Bergen, Norway

Kjesbu, Olav Sigurd
2016

The implications of climate change on oceans and marine food systems

Kjesbu, Olav Sigurd
2016

Crucial factors affecting reproductive investment of marine fishes in a changing climate

Kjesbu, Olav Sigurd
2016

Variation in growth and reproduction of bearded goby (Sufflogobius bibarbatus) in hypoxic waters of northern Benguela.

Anne Gro Vea Salvanes, Maria Larsen Seivåg, Yusra Taha, Henrik Christiansen, Olav Sigurd Kjesbu, Arild Folkvord, Anne Christine Utne-Palm, Bronwen Currie, Werner Ekau, Anja van der Plas, Christina Henseler, Mark J Gibbons
2015

Exemplification of stock productivity changes in the North East Atlantic in warming waters

Kjesbu, Olav Sigurd
2014

"Eco-Harvest Control Rules"

Dorothy Jane Dankel, Joel Marcel Durant, Geir Ottersen, Olav Sigurd Kjesbu, Nils Christian Stenseth
2014

Samfunnsmessig betydning av marint mangfold med hovedvekt på fisk

Kjesbu, Olav Sigurd
2014

“…Sir John Murray’s well-known scientific views and his original ideas…”: from Johan Hjort’s mark of respect to the recent formation of the Hjort Centre for Marine Ecosystem Dynamics in Bergen, Norway

Kjesbu, Olav Sigurd
2014

Hjortsenteret – felles innsats for studier av de store marine økosystemene

Kjesbu, Olav Sigurd
2014

Do eggs collected in egg surveys accurately reflect adult fecundities?

Hannes Höffle, Frode Bendiksen Vikebø, Olav Sigurd Kjesbu
2014

Some like it cold – Consequence of warming seas for the distribution of large bodied fish

Hannes Höffle, Olav Sigurd Kjesbu
2014

Population differentiation and local adaptation in Atlantic cod

Michael Matschiner, Bastiaan Star, Paul Ragnar Berg, Ole Kristian Tørresen, Alexander Johan Nederbragt, Marianne Helén Selander Hansen, Morten Skage, Olav Sigurd Kjesbu, Nils Christian Stenseth, Kjetill Sigurd Jakobsen, Sissel Jentoft
2013

A positive outlook for cod in the Barents Sea: Synergies between climate and management

Olav Sigurd Kjesbu, Bjarte Bogstad, Jennifer Ann Devine, Harald Gjøsæter, Daniel Howell, Randi Ingvaldsen, Richard David Marriott Nash, Jon Egil Skjæraasen
2013

Skipped spawning in female Northeast Arctic gadoids

Jon Egil Skjæraasen, Knut Korsbrekke, Richard David Marriott Nash, Olav Sigurd Kjesbu
2013

Maternal effects and the match-mismatch hypothesis under a warming climate: the case of cod spawning in the Lofoten area

Kjesbu, Olav Sigurd
2011

Temperature, fish size, spawning time and reproductive success of Atlantic cod

Olav Sigurd Kjesbu, Jon Egil Skjæraasen, Francisco Rey, Christian Jørgensen
2011

Spawning omission and fecundity regulation in the Northeast Arctic haddock (Melanogrammus aeglefinus)

Jon Egil Skjæraasen, Knut Korsbrekke, Merete Fonn, Olav Sigurd Kjesbu, Richard David Marriott Nash
2011

The link between temperature, fish size, spawning time and reproductive success of Atlantic cod

Olav Sigurd Kjesbu, Jon Egil Skjæraasen, Francisco Rey, Christian Jørgensen
2010

Climate-linked effects on maturation and spawning of Atlantic cod and implications for fisheries

Olav Sigurd Kjesbu, Jon Egil Skjæraasen, D Righton, Kathrine Michalsen, Christian Jørgensen, Anders Frugård Opdal, Peter R. Witthames
2009

Does skipped spawning occur for cod and herring?

Jon Egil Skjæraasen, Olav Sigurd Kjesbu
2009

From “where” and “when” to “what” and “why”: archival tags for monitoring “complex” behaviours in fish

Julian D. Metcalfe, RP Wilson, Olav Sigurd Kjesbu, MJ Challiss, A Gleiss, Jon Egil Skjæraasen, S Clarke
2008

Induction of skipped spawning in herring

James Kennedy, Jon Egil Skjæraasen, Richard David Marriott Nash, Anders Thorsen, Aril Slotte, Olav Sigurd Kjesbu
2008

Assessment of the occurrence and dynamics of skipped spawning in Norwegian spring-spawning herring (Clupea harengus)

James Kennedy, Jon Egil Skjæraasen, Richard David Marriott Nash, Anders Thorsen, Aril Slotte, Olav Sigurd Kjesbu
2007

Timing and fecundity determination in Norwegian Spring Spawning herring

James Kennedy, Olav Sigurd Kjesbu, Maria Krüger-Johnsen, Hilkka Opolili Ndahafa Ndjaula, Jon Egil Skjæraasen, Aril Slotte, Anders Thorsen
2007

Timing and determination of fecundity and skipped spawning in Atlantic cod

Jon Egil Skjæraasen, James Kennedy, Anders Thorsen, Richard David Marriott Nash, Olav Sigurd Kjesbu
2007

Timing and determination of skipped spawning in Atlantic cod

Jon Egil Skjæraasen, James Kennedy, Anders Thorsen, Richard David Marriott Nash, Olav Sigurd Kjesbu

Annet tidsskriftbidrag

2011

Book review of Fish Reproduction edited by Maria João Rocha, Augustine Arukwe and B.G. Kapoor(Science Publisher)

Kjesbu, Olav Sigurd
Fish and Fisheries 12 p. 472-473
2010

Method development and evaluation of stock reproductive potential of marine fish Preface

Olav Sigurd Kjesbu, Hilario Murua, Francisco Saborido-Rey, Peter R. Witthames
Fisheries Research 104 p. 1-7

Rapporter og avhandlinger

2017

Reproductive traits across the Atlantic herring (Clupea harengus L.) stock complex

Thassya Christina dos Santos Schmidt, Olav Sigurd Kjesbu
2006

Oocyte development in Atlantic cod (Gadus morhua L.): Trypsin-like specific activity, capacity for protein synthesis and proteomics

Krisna Rungruangsak-Torrissen, Hilde Kristin Garberg, Anders Thorsen, Olav Sigurd Kjesbu, Kari Espolin Fladmark
1999

Lysing in namibiske farvann - en økologisk tilspasning til et oppstrømningssystem. Fisken og Havet Særnummer 2. side 68-75

Svein Sundby, Morten D. Skogen, Olav Sigurd Kjesbu
1992

The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. I. The collection and characteristics of the cod females, a pilot study

Per Solemdal, Olav S. Kjesbu, Elin Kjørsvik
1992

The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. II. Preliminary results of the experiment in 1992

P. Solemdal, Ø. Bergh, R.N. Finn, H.J Fyhn, O. Grahl-Nielsen, O. Homme, O.S. Kjesbu, Elin Kjørsvik, I. Opstad, A.B. Skiftesvik
1988

Aspects of the reproduction in cod (Gadus morhua L.) : oogenesis, fecundity, spawning in captivity and stage of spawning

Kjesbu, Olav Sigurd
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