Bilde av Folstad, Ivar
Bilde av Folstad, Ivar
Department of Arctic and Marine Biology ivar.folstad@uit.no +4777644384 90088764 Tromsø You can find me here

Ivar Folstad



  • Guro Hole, Bård-Jørgen, Ivar :
    Resemblance Reporting on Children: Sisters Are More Proactive than Brothers
    Evolutionary Psychological Science 2022 DOI / ARKIV
  • Marilena, Torvald Blikra, Jarle Tryti, Ivar :
    Cannibalism and protective behavior of eggs in Arctic charr (Salvelinus alpinus)
    Ecology and Evolution 28. septiembre 2021 DOI / ARKIV
  • Magnus Beyer, Torvald, Jarle Tryti, Ivar :
    Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding
    Ecology and Evolution 2018 DOI / ARKIV
  • April Snøfrid, Jarle Tryti, Geir, Lars, Berner, Katrin et al.:
    No support for cryptic choice by ovarian fluid in an external fertilizer
    Ecology and Evolution 2018 DOI / ARKIV
  • Mari Veierud, Sandra, Ina Jeanette, Ivar :
    Do mothers also "manipulate" grandparental care?
    PeerJ 2018 DOI / ARKIV
  • Torvald Blikra, Geir, Jarle Tryti, Ivar :
    Status specific tailoring of sperm behavior in an external fertilizer
    Frontiers in Ecology and Evolution 2016 DOI / ARKIV
  • Geir, Jonathan Serrano, Ivar :
    Own,but not foreign seminal fluid inhibits sperm activation in a vertebrate with external fertilization
    Frontiers in Ecology and Evolution 2015 DOI / ARKIV
  • Torvald Blikra, Geir, Jarle Tryti, Ivar :
    On the relative effect of spawning asynchrony, sperm quantity, and sperm quality on paternity under sperm competition in an external fertilizer
    Frontiers in Ecology and Evolution 2015 DOI / ARKIV
  • Trond, Ivar :
    Flowers for bees, autumn colours for whom? An experimental test with autumn colouration in mountain birches (Betula pubescens ssp. czerepanovii) as a signal against the moth Epirrita autumnata
    Entomologia Experimentalis et Applicata 2014 DOI
  • Åse Kristine Rognmo, Ivar, Nigel Gilles, Bruno :
    The spectacular human nose: An amplifier of individual quality?
    PeerJ 2014 DOI / ARKIV
  • Abdurhman Kelil, Raul, Ivar :
    Female morphology and male mating success in the calanoid copepod, Eudiaptomus graciloides
    Journal of Plankton Research 2014 DOI
  • Lars, Ivar, Geir, Sveinn Are, Raine, Philip et al.:
    The relative effect of parasites and social status on sperm traits in Arctic charr
    Behavioral Ecology 2013 DOI / ARKIV
  • Magne, Ivar :
    Ranking fluctuating asymmetry in a dot figure and the significant impact of imagining a face
    Perception 2013 DOI
  • Thomas, Geir, Lars, Ivar :
    Is the adipose fin and the lower jaw (kype) related to social dominance in male Arctic charr Salvelinus alpinus?
    Journal of Fish Biology 2011 DOI
  • Vidar, Lars, Geir, Ivar :
    Spawning behaviour of Arctic charr (Salvelinus alpinus): risk of sperm competition and timing of milt release for sneaker and dominant males
    Behaviour 2011 DOI / ARKIV
  • A.K., R., I., S., Jørgen :
    Morphological correlates of mating frequency and clutch size in wild caught female Eudiaptomus graciloides (Copepoda: Calanoida)
    Journal of Plankton Research 2009 DOI
  • Rolf, Inkeri, Rolf Anker, Nigel Gilles, Ivar :
    Parasite intensity and fur coloration in reindeer calves - contrasting artificial and natural selection
    Journal of Animal Ecology 2009 DOI
  • Thomas, Geir, Lars, Ivar :
    Sperm velocity and its relation to social status in Arctic charr (Salvelinus alpinus)
    Animal Reproduction Science 2009 DOI
  • Eirik Mack, Bård-Jørgen, Ståle, Geir, Ivar :
    Experimental evidence for paternal effects on offspring growth rate in Arctic charr (Salvelinus alpinus)
    Proceedings of the Royal Society of London. Biological Sciences 2009 DOI
  • Ståle, Geir, Ivar :
    Factors predicting male fertilization success in an external fertilizer
    Behavioral Ecology and Sociobiology 2008 DOI
  • Sveinn Are, Dennis, Ivar, K. E. :
    A label of health: a previous immune challenge is reflected in the expression of a female plumage trait
    Biology Letters 2008 DOI
  • Geir, Lars, Ivar, Oddmund :
    Sperm velocity influence paternity in the Atlantic cod (Gadus morhua L.)
    Aquaculture Research 2008 DOI
  • Caroline Teinum, Ivar :
    Biologiprofessorer reagerer: - Skummelt å spre teorien om intelligent design
    23. octubre 2019
  • Kristin, Ivar, Andrew :
    7 things you didn’t know about reindeer
    23. diciembre 2016
  • Monika, Ivar, Geir :
    Naturens verden
    02. octubre 2016
  • Ewa, Ivar :
    Dette blir vi tiltrukket av
    06. noviembre 2015
  • Ivar :
    Under streken
    08. noviembre 2015
  • Ivar :
    Nesefin
    22. septiembre 2014
  • Ivar, Lasse :
    Så vigtig er næsen for et smukt ansikt
    01. julio 2014
  • Ivar, Lasse :
    How important is the nose?
    28. junio 2014
  • Ivar :
    When publishing an article takes forever...for no good reason
    09. mayo 2014
  • Lasse, Ivar :
    Hvor viktig er nesa?
    13. junio 2014
  • Pia, Ivar :
    Nesens rolle
    27. agosto 2014
  • Ivar, Sience :
    What the shape of your nose says about your quality as a mate
    30. abril 2014
  • Ivar, Randi M. :
    Blir vi tiltrukket av neser?
    24. agosto 2014
  • Ivar, Randi M. :
    Blir vi tiltrukket av neser?
    19. junio 2014
  • Torkild, Ivar :
    Derfor velger single å operere akkurat denne delen av kroppen
    17. junio 2014
  • Ivar, Jonah :
    Science! What the shape of your nose says about your quality as a mate
    30. abril 2014
  • Valseth, Ivar :
    Nå er nesen viktigst
    28. noviembre 2014
  • Torkild, Ivar :
    Ny studie fra UiT-forskere: SLIK VIL VI SE UT
    19. junio 2014
  • Maja, Ivar :
    En lang kjede av menneskehet
    20. junio 2009
  • Ivar :
    Evolusjonsbiologi - vanskelig å forstå
    Nordlys 22. septiembre 2009
  • Ivar :
    Evolusjonsteori - vanskelig å forstå
    Helgeland Arbeiderblad 26. septiembre 2009
  • Rønning, Ivar :
    Sjimpanser vil ikke samarbeide
    07. mayo 2009
  • Amundsen, Ivar, Jarl, Tore, Stenseth :
    "Ida" er oversolgt
    03. junio 2009
  • Trond, Ivar, Jarl, Tore, Nils Christian :
    "Ida" er oversolgt
    03. junio 2009 FULLTEKST
  • Ivar, Grydeland :
    Den friskeste bjørka gulner først
    02. septiembre 2009
  • Ivar, Grydeland :
    Ei blot til pynt.
    20. agosto 2009
  • Ivar, Grydeland :
    Sebramysterium løst i Tromsø?
    26. agosto 2009
  • Randi, Ivar :
    Det vanskelige partnervalget - om infeksjon og attraksjon
    15. junio 2008

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    Research interests

    - Evolusjon
    - Seksuell seleksjon
    - adferd


    Member of research group



    Biologibygget 2.027


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