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I. Folstad · SciRah

Researcher profile · Semantic Scholar

I. Folstad

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I. Folstad — researcher profile on SciRah

h-index: 37
Works: 75
Citations: 6,758

Most-cited papers

Parasites, Bright Males, and the Immunocompetence Handicap
I. Folstad, A. Karter
1992American Naturalist2,772 citations
Semantic Scholar
Cost of reproduction in a long-lived bird: incubation effort reduces immune function and future reproduction
S. Hanssen, D. Hasselquist, I. Folstad, K. Erikstad
2005Proceedings of the Royal Society of London. Biological Sciences329 citations Open access
Semantic Scholar
Adaptive or Nonadaptive Immunosuppression by Sex Hormones?
C. Wedekind, I. Folstad
1994American Naturalist272 citations
Semantic Scholar
Costs of immunity: immune responsiveness reduces survival in a vertebrate
S. Hanssen, D. Hasselquist, I. Folstad, K. Erikstad
2004Proceedings of the Royal Society of London. Series B: Biological Sciences265 citations Open access
Semantic Scholar
Rapid adjustments of sperm characteristics in relation to social status
G. Rudolfsen, Lars Figenschou, I. Folstad, H. Tveiten +1 more
2006Proceedings of the Royal Society of London. Biological Sciences185 citations Open access
Semantic Scholar
Parasite avoidance: the cause of post-calving migrations in Rangifer?
I. Folstad, A. Nilssen, O. Halvorsen, J. Andersen
1991157 citations
Semantic Scholar
Effects of ovarian fluid on sperm velocity in Arctic charr (Salvelinus alpinus)
D. Urbach, I. Folstad, G. Rudolfsen
2005Behavioral Ecology and Sociobiology141 citations Open access
Semantic Scholar
Autumn colouration and herbivore resistance in mountain birch (Betula pubescens)
S. Hagen, I. Folstad, Stein W. Jakobsen
2003103 citations
Semantic Scholar
Secondary sex traits, parasites, immunity and ejaculate quality in the Arctic charr
Ståle Liljedal, I. Folstad, F. Skarstein
1999Proceedings of the Royal Society of London. Series B: Biological Sciences99 citations Open access
Semantic Scholar
Why do male reindeer (Rangifer t. tarandus) have higher abundance of second and third instar larvae of Hypoderma tarandi than females
I. Folstad, A. Nilssen, O. Halvorsen, J. Andersen
198999 citations
Semantic Scholar
Immune Function and Organochlorine Pollutants in Arctic Breeding Glaucous Gulls
J. O. Bustnes, S. Hanssen, I. Folstad, K. Erikstad +2 more
2004Archives of Environmental Contamination and Toxicology98 citations
Semantic Scholar
Sperm velocity influence paternity in the Atlantic cod (Gadus morhua L.)
G. Rudolfsen, Lars Figenschou, I. Folstad, O. Kleven
200888 citations Open access
Semantic Scholar
Factors predicting male fertilization success in an external fertilizer
Ståle Liljedal, G. Rudolfsen, I. Folstad
2008Behavioral Ecology and Sociobiology88 citations
Semantic Scholar
Is male germ line control creating avenues for female choice
I. Folstad, Prode Skarstein
199788 citations
Semantic Scholar
Reduced immunocompetence and cost of reproduction in common eiders
S. Hanssen, I. Folstad, K. Erikstad
2003Oecologia84 citations
Semantic Scholar
PARASITES, BRIGHT MALES, AND THE IMMUNOCOMPETENCE
I. Folstad, A. Karter
199284 citations
Semantic Scholar
REGULAR ARTICLES / ARTICLES RÉGULIERS Whether to reproduce or not: immune suppression and costs of parasites during reproduction in the Arctic charr
F. Skarstein, I. Folstad, Ståle Liljedal
200183 citations
Semantic Scholar
Gastrointestinal nematodes depress food intake in naturally infected reindeer
Per Arneberg, I. Folstad, A. Karter
1996Parasitology82 citations
Semantic Scholar
Sexually selected color in male sticklebacks: a signal of both parasite exposure and parasite resistance?
I. Folstad, A. M. Hope, A. Karter, A. Skorping
199482 citations
Semantic Scholar
Potential fitness benefits from mate selection in the Atlantic cod (Gadus morhua)
G. Rudolfsen, Lars Figenschou, I. Folstad, J. T. Nordeide +1 more
2005Journal of Evolutionary Biology80 citations Open access
Semantic Scholar
White plumage reflects individual quality in female eiders
S. Hanssen, I. Folstad, K. Erikstad
200677 citations
Semantic Scholar
Reindeer antlers: visual indicators of individual quality?
Eystein Markusson, I. Folstad
1997Oecologia77 citations
Semantic Scholar
Cod courtship song: a song at the expense of dance?
F. Engen, I. Folstad
199972 citations
Semantic Scholar
Blood concentration of organochlorine pollutants and wing feather asymmetry in Glaucous Gulls
J. O. Bustnes, I. Folstad, K. Erikstad, M. Fjeld +2 more
200271 citations Open access
Semantic Scholar
Antler asymmetry and immunity in reindeer
Kristin Lagesen, I. Folstad
1998Behavioral Ecology and Sociobiology67 citations
Semantic Scholar
Male dimorphism, sperm traits and immunology in the corkwing wrasse (Symphodus melops L.)
I. Uglem, T. Galloway, G. Rosenqvist, I. Folstad
2001Behavioral Ecology and Sociobiology61 citations
Semantic Scholar
Anti-parasite treatment removes negative effects of environmental pollutants on reproduction in an Arctic seabird
J. O. Bustnes, K. Erikstad, S. Hanssen, T. Tveraa +2 more
2006Proceedings of the Royal Society of London. Biological Sciences57 citations Open access
Semantic Scholar
Do bacterial infections cause reduced ejaculate quality? A meta-analysis of antibiotic treatment of male infertility
Philip A. Skau, I. Folstad
200356 citations
Semantic Scholar
MHC and fertilization success in the Arctic charr (Salvelinus alpinus)
F. Skarstein, I. Folstad, Ståle Liljedal, M. Grahn
2005Behavioral Ecology and Sociobiology55 citations
Semantic Scholar
Antlers and parasites
I. Folstad, P. Arneberg, A. Karter
1996Oecologia50 citations
Semantic Scholar
Milt quality, parasites, and immune function in dominant and subordinate Arctic charr
Ståle Liljedal, I. Folstad
200347 citations
Semantic Scholar
Costs of parasites in common eiders: effects of antiparasite treatment
S. Hanssen, I. Folstad, Kjeli Einar Erikstad, A. Oksanen
200347 citations
Semantic Scholar
Experimental evidence for paternal effects on offspring growth rate in Arctic charr (Salvelinus alpinus)
Eirik Mack Eilertsen, Bård-Jørgen Bårdsen, Ståle Liljedal, G. Rudolfsen +1 more
2009Proceedings of the Royal Society of London. Biological Sciences44 citations Open access
Semantic Scholar
State-dependent parental care in the Antarctic petrel: responses to manipulated chick age during early chick rearing
Ø. Varpe, T. Tveraa, I. Folstad
200442 citations Open access
Semantic Scholar
Does immunity regulate ejaculate quality and fertility in humans
Philip A. Skau, I. Folstad
200541 citations
Semantic Scholar
Are secondary sex traits, parasites and immunity related to variation in primary sex traits in the Arctic charr?
Marthe Måsvær, Ståle Liljedal, I. Folstad
2004Proceedings of the Royal Society of London. Series B: Biological Sciences41 citations Open access
Semantic Scholar
Carotenoid coloration in great black-backed gull Larus marinus reflects individual quality
Kai Ove Kristiansen, J. O. Bustnes, I. Folstad, M. Helberg
200639 citations
Semantic Scholar
Spawning colouration, parasites and habitat selection in Salvelinus alpinus: initiating speciation by sexual selection?
F. Skarstein, I. Folstad, H. Rønning
200535 citations
Semantic Scholar
Autumn coloration as a signal of tree condition
S. Hagen, Stephanie Debeausse, N. Yoccoz, I. Folstad
2004Proceedings of the Royal Society of London. Series B: Biological Sciences33 citations Open access
Semantic Scholar
Lek fidelity of male Arctic charr
Lars Figenschou, I. Folstad, Ståle Liljedal
200431 citations
Semantic Scholar
THE EFFECT OF PARASITES ON COURTSHIP DANCE IN THREESPINE STICKLEBACKS : MORE THAN MEETS THE EYE ?
Torfinn Brønseth, I. Folstad
199731 citations
Semantic Scholar
Do the fastest sperm within an ejaculate swim faster in subordinate than in dominant males of Arctic char
J. V. Serrano, I. Folstad, G. Rudolfsen, Lars Figenschou
200629 citations Open access
Semantic Scholar
Mating behavior and thermoregulation of the reindeer warble fly,Hypoderma tarandi L. (Diptera: Oestridae)
John R. Anderson, A. Nilssen, I. Folstad
1994Journal of insect behavior28 citations
Semantic Scholar
Sperm velocity and its relation to social status in Arctic charr (Salvelinus alpinus).
Thomas Haugland, G. Rudolfsen, Lars Figenschou, I. Folstad
2009Animal Reproduction Science27 citations
Semantic Scholar
A label of health: a previous immune challenge is reflected in the expression of a female plumage trait
S. Hanssen, D. Hasselquist, I. Folstad, K. Erikstad
2008Biology Letters24 citations Open access
Semantic Scholar
Spawning behaviour of Arctic charr (Salvelinus alpinus): risk of sperm competition and timing of milt release for sneaker and dominant males
V. Sørum, Lars Figenschou, G. Rudolfsen, I. Folstad
201123 citations Open access
Semantic Scholar
On the relative effect of spawning asynchrony, sperm quantity, and sperm quality on paternity under sperm competition in an external fertilizer
T. Egeland, G. Rudolfsen, J. T. Nordeide, I. Folstad
2015Frontiers in Ecology and Evolution22 citations Open access
Semantic Scholar
Morphological correlates of mating frequency and clutch size in wild caught female Eudiaptomus graciloides (Copepoda: Calanoida)
Abdurhman Kelil Ali, R. Primicerio, I. Folstad, Ståle Liljedal +1 more
200920 citations
Semantic Scholar
Abiotic factors influencing embryonic development, egg hatching, and larval orientation in the reindeer warble fly, Hypoderma tarandi
A. Karter, I. Folstad, John R. Anderson
1992Medical and Veterinary Entomology20 citations
Semantic Scholar
Schooling, dusk flight and dance: social organisations as amplifiers of individual quality?
I. Barber, I. Folstad
200019 citations
Semantic Scholar

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G. Rudolfsen×10
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Ståle Liljedal×9
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S. Hanssen×8
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K. Erikstad×8
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Lars Figenschou

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D. Hasselquist×4

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F. Skarstein×4

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J. O. Bustnes×4

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