Peer-reviewed articles:
Chapters, book reviews:
Papers in non-peer-reviewed journals:
Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird
- Juarez-Hernandez, E., Villalobos-Jimenez, G., Gutierrez-Corona, J. F., Krams, I., Gonzalez-Soriano, E., Contreras-Garduno, J. 2020. Hidden costs in the physiology of Argia anceps (Zigoptera: Coenagrionidae) due to pollution. Neotropical Entomology 49 (2): 227−233. PDF
- Krams IA, Luoto S, Krama T, Krams R, Sieving K, Trakimas G, Elferts D, Rantala MJ, Goodale E. 2020. Egalitarian mixed-species bird groups enhance winter survival of subordinate group members but only in high-quality forests. Sci Rep 10, 4005. https://doi.org/10.1038/s41598-020-60144-w PDF
- Goodale, E., Sridhar, H., Sieving, K., Bangal, P., Colorado, G.J., Farine, D., Heymann E.W., Jones, H.H., Krams, I., Martínez, A., Montaño-Centellas F., Muñoz, J., Srinivasan, U., Shanker, K. 2020. Mixed company: A framework for understanding the composition and organization of mixed-species animal groups. – Biological Reviews (published online) PDF
- Rantala, M. J., Luoto, S., Krama, T., Krams, I. 2019. Eating Disorders: An Evolutionary Psychoneuroimmunological Approach. – Frontiers in Psychology 10: 2200. DOWNLOAD PDF
- Luoto, S., Krams, I., Rantala, M.J. 2019. Response to commentaries: Life history evolution, causal mechanisms, and female sexual orientation. Archives of Sexual Behavior 48: 1335-1347. PDF
- Luoto, S., Rantala, M.J., Krams, I. England first, America second: The ecological predictors of life history and innovation. Open Peer Commentary. – (In press, Behavioral and Brain Sciences). DOI: 10.13140/RG.2.2.21280.02560/
- Contreras-Garduño, J., Méndez-López, T.T., Patiño-Morales, A., González-Hernández, G.A., Torres-Guzmán, J.C., Krams, I., Mendoza-Cuenca, L., Ruiz-Guzmán G. 2019. The costs of the immune memory within generations. – The Science of Nature 106: 59. PDF
- Bahhir, D., Yalgin, C., Ots, L., Järvinen, S., George, J., Naudí, A., Krama, T., Krams, I., Tamm, M., Andjelković, A., Dufour, E., González de Cózar, J., Gerards, M., Parhiala Pamplona, M.R., Jacobs, H.T., Jõers, P. Manipulating mtDNA in vivo reprograms metabolism via novel response mechanisms. – PLoS Genetics, in press. PDF
- Moore, F.R., Macleod, M., Starkey, C., Krams, I., Roy T. 2019. Effects of the Sex Ratio and Socioeconomic Deprivation on Male Mortality. – Archives of Suicide Research (published online). Doi.org/10.1080/13811118.2019.1635929 PDF
- Trakimas, G., Krams, R., Krama, T., Kortet, R., Haque, S., Luoto, S., Eichler Inwood, S., Butler, D.M., Jõers, P., Hawlena, D., Rantala, MJ., Elferts, D., Contreras-Garduño, J., Krams, I. 2019. Ecological stoichiometry: a link between developmental speed and physiological stress in an omnivorous insect. – Frontiers Behavioral Neurosciences 13:42. doi: 10.3389/fnbeh.2019.00042 DOWNLOAD PDF
- Marcinkowska, U.M., Lee, A.J., Kozlov, M.V., Aavik, T., Cai, H., Contreras-Garduño, J., Oana, G.A., Kaminski, G., Li, N. P., Onyishi, I.E., Prasai, K., Pazhoohi, F., Prokop, P., Rosales Cardozo, S.L., Sydney, N., Taniguchi, H., Krams I., Rantala, M.J., Dixson, B.J.W. 2019. Women’s preferences for men’s facial masculinity are strongest under favorable ecological. – Scientific Reports 9: 3387. PDF
- Krams, I., Luoto, S., Rubika, A., Krama, T., Elferts, D., Kecko, S., Skrinda, I., Moore, F.R., Krams, R., Rantala, M.J. 2019. A head start for life history development? Family income mediates associations between height and immune response in men. – American Journal of Physical Anthropology 168: 421–427. Doi.org/10.1002/ajpa.23754 PDF
- Luoto, S., Krams, I., Rantala, M.J. 2018. A Life History Approach to the Female Sexual Orientation Spectrum: Evolution, Development, Causal Mechanisms, and Health. – Archives of Sexual Behavior. 48: 1273–1308. DOI: 10.1007/s10508-018-1261-0. PDF
- Krams, I., Trakimas, G., Kecko, S., Elferts, D., Krams, R., Luoto, S., Rantala, M.J., Mänd, M., Kuusik, A., Kekäläinen, J., Jõers, P., Kortet, R., Krama, T. 2018. Linking organismal growth, coping styles, stress reactivity, and metabolism via responses against a selective serotonin reuptake inhibitor in an insect. – Scientific Reports 8: 8599. PDF
- Kangassalo, K., Valtonen, T.M., Sorvari, J., Kecko, S., Pölkki, M., Krams, I., Krama, T., Rantala, M.J. 2018. Independent and interactive effects of immune activation and larval diet on adult immune function, growth and development in the greater wax moth (Galleria mellonella). – Journal of Evolutionary Biology 31: 1485–1497. PDF
- Krams, I., Rantala, M.J., Luoto, S., Krama, T. 2018. Fat is not just an energy store. – Journal of Experimental Biology 221: jeb184499 doi: 10.1242/jeb.184499 PDF
- Samplonius, J.M., Bartošová, L., Burgess, M., Bushuev, A., Eeva, T., Ivankina, E., Kerimov, A., Krams, I., Laaksonen, T., Mägi, M., Mänd, R., Potti, J., Török, J., Trnka, M., Visser, M., Zang, H., Both, C. 2018. Phenological sensitivity to climate change is higher in resident than in migrant bird populations among European cavity breeders. – Global Change Biology 24: 3780–3790. PDF
- Luoto, S., Karlsson, H., Krams, I., Rantala, M.J. 2018. Depression subtyping based on evolutionary psychiatry: From reactive short-term mood change to depression. – Brain, Behavior and Immunity 69: 630. WEB PDF
- Forsman, J.T., Seppänen, J.-T., Mönkkönen, M., Thomson, R.L., Kivelä, S.M., Krams, I., Loukola, O.J. 2018. Is it interspecific information use or aggression between putative competitors that steers the selection of nest-site characteristics? A reply to Slagsvold and Wiebe. – Journal of Avian Biology 49: jav-01558. doi:10.1111/jav.01558 PDF
- Rantala, M.J., Luoto, S., Krams, I., Karlsson, H. 2018. Depression subtyping based on evolutionary psychiatry: Proximate mechanisms and ultimate functions. – Brain, Behavior, and Immunity 69: 603–617. PDF
- Krams, I., Kecko, S., Inashkina, I., Trakimas, G., Krams, R., Elferts, D., Vrublevska, J., Jõers, P., Rantala, M.J., Luoto, S., Contreras-Garduño, J., Jankevica, L., Meija, L. and Krama, T. 2017. Food quality affects the expression of antimicrobial peptide genes upon simulated parasite attack in the larvae of greater wax moth. – Entomologia Experimentalis et Applicata 165: 129-137. doi:10.1111/eea.12629 PDF
- Cīrule, D., Krama, T., Krams, R., Elferts, D., Kaasik, A., Rantala, M.J., Mierauskas, P., Luoto, S., Krams, I.A. 2017. Habitat quality affects stress responses and survival in a bird wintering under extremely low ambient temperatures. – The Science of Nature – Naturwissenschaften 104: 99. https://doi.org/10.1007/s00114-017-1519-8 PDF
- Krams, I., Kecko, S., Jõers, P., Trakimas, G., Elferts, D., Krams, R., Luoto, S., Rantala, M.J., Inashkina, I., Gudrā D., Fridmanis, D., Contreras Garduño, J.J., Grantiņa-Ieviņa, L., Krama, T. 2017. Microbiome symbionts and diet diversity incur costs on the immune system of insect larvae. – Journal of Experimental Biology 220: 4204–4212. PDF
- Kecko, S., Mihailova, A., Kangassalo, K., Elferts, D., Krama, T., Krams, R., Luoto, S., Rantala, M.J., Krams, I.A. 2017. Sex-specific compensatory growth in the larvae of the greater wax moth Galleria mellonella. – Journal of Evolutionary Biology 30: 1910–1918. PDF
- Rantala, M.J., Luoto, S., Krams, I. 2017. An evolutionary approach to clinical pharmacopsychology. – Psychotherapy and Psychosomatics 86: 370–371.
- Suhonen, J., Ilvonen, S., Dunn, D.W., Dunn, J., Härmä, O., Ilvonen, J.J., Kaunisto, K.M., Krams, I. 2017. Parasitism affects variation in a male damselfly sexual ornament. – Ethology, Ecology & Evolution, doi: 10.1080/03949370.2017.1354920 PDF
- Krams, I.A., Niemelä, P.T., Trakimas, G., Krams, R., Burghardt, G.M., Krama, T., Kuusik, A., Mänd, M., Rantala, M.J., Mänd, R., Kekäläinen, J., Sirkka, I., Luoto, S Kortet, R. 2017. Metabolic rate associates with, but does not generate covariation between, behaviours in western stutter-trilling crickets, Gryllus integer. – Proceedings of the Royal Society B 284: 20162481; DOI: 10.1098/rspb.2016.2481. PDF
- Krams, I.A., Rumvolt, K., Saks, L., Krams, R., Elferts, D., Vrublevska, J., Rantala, M.J., Kecko, S., Cirule, D, Luoto, S., Krama, T. 2017. Reproduction compromises adaptive immunity in a cyprinid fish. – Ecological Research 32: 559– 566. PDF
- Krams, I.A., Krama, T., Trakimas, G., Kaasik, A., Rantala, M.J., Škute, A. 2017. Reproduction is costly in an infected aquatic insect. – Ethology, Ecology & Evolution 29: 74−84. PDF
- Krams, I., Inwood, S.-E., Trakimas, G., Krams, R., Burghardt, G.M., Butler, D.M., Krama, T. 2016. A short-term exposure to predation affects body elemental content and geotaxis response in Drosophila melanogaster. – PeerJ 4: article number e2314. PDF
- Kangassalo, K., Kosonen, K., Pölkki, M., Sorvari, J., Krams, I., Rantala, M.J. 2016. Immune challenge has a negative effect on cuticular darkness in the mealworm beetle, Tenebrio molitor. – Annales Zoologici Fennici 53: 255–262. DOWNLOAD PDF
- Vaugoyeau, M., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouslama, Z., Bouvier, J.-C., Camprodon, J., Cecere, F., Charmantier, A., Charter, M., Cichoń, M., Cusimano, C., Czeszczewik, D., Demeyrier, V., Doligez, B., Doutrelant, C., Dubiec, A., Eens, M., Eeva, T., Faivre, B., Ferns, P.N., Forsman, J.T., García-del-Rey, E., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Grégoire, A., Gustafsson, L., Harnist, I., Hartley, I.R., Heeb, P., Hinsley, S.A., Isenmann, P., Jacob, S., Juškaitis, R., Korpimäki, E., Krams, I., Laaksonen, T., Lambrechts, M.M., Leclercq, B., Lehikoinen, E., Loukola, O., Lundberg, A., Mainwaring, M.C., Mänd, R., Massa, B., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Morin, X., Nager, R.G., Nilsson, J.- Å., Nilsson, S.G., Norte, A.C., Orell, M., Perret, P., Perrins, C.M., Pimentel, C.S., Pinxten, R., Richner, H., Robles, H., Rytkönen, S., Senar, J.C., Seppänen, J.T., da Silva, L.P., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Tryjanowski, P., von Numers, M., Walankiewicz, W., & Møller, A.P. 2016. Interspecific variation in the relationship between clutch size, laying date and intensity of urbanisation in four species of hole-nesting birds. – Ecology and Evolution 6: 5907–5920. PDF
- Krams I., Burghardt, G.M, Krams, R, Trakimas, G., Kaasik, A., Luoto, S., Rantala, M.J., Krama T. 2016. A dark cuticle allows higher investment in immunity, longevity and fecundity in a beetle upon a simulated parasite attack. − Oecologia 182: 99-109. PDF
- Freerberg, T.M., Krams, I. 2015. Does social complexity link vocal complexity and cooperation? – Journal of Ornithology 156: S125-S132. PDF
- Laaksonen, T.; Sirkiä, P.M.; Calhim, S.; Brommer, J.E.; Leskinen, P.K.; Primmer, C.R.; Adamík, P.; Artemyev, A.V.; Belskii, E.; Both, C.; Bureš, S.; Burgess, M.; Doligez, B.; Forsman, J.T.; Grinkov, V.; Hoffmann, U.; Ivankina, E.; Král, M.; Krams, I.; Lampe, H.M.; Moreno, J.; Mägi, M.; Nord, A.; Potti, J.; Ravussin, P.-A.; Sokolov, L. 2015. Sympatric divergence and clinal variation in multiple coloration traits of Ficedula flycatchers. – Journal of Evolutionary Biology 28: 779-790. PDF
- Krama, T., Krams, R., Cīrule, D., Moore, F.R., Rantala, M.J., Krams, I.A. 2015. Intensity of haemosporidian infection of parids positively correlates with proximity to water-bodies, but negatively with host survival. – Journal of Ornithology 156: 1075-1084. PDF
- Krams, I., Moore, F., Krama, T., Rantala, M.J., Mänd, R., Mierauskas, P., Mänd, M. 2015. Resource availability as a proxy for terminal investment in a beetle. – Oecologia 178: 339-345. PDF
- Krams, I., Kecko, S., Kangassalo, K., Moore, K.F., Jankevics, E., Inashkina, I., Krama, T., Lietuvietis, V., Meija, L., Rantala, MJ. 2015. Effects of food quality on trade-offs among growth, immunity and survival in the greater wax moth (Galleria mellonella). – Insect Science 22: 431-439. DOI: 10.1111/1744-7917.12132 PDF
- Sirkiä, P.M., Adamík, P., Artemyev, A.V., Belskii, E., Both, C., Bureš, S., Burgess, M., Bushuev, A.V., Forsman, J.T., Grinkov, V., Hoffmann, D., Järvinen, A., Král, M., Krams, I., Lampe, H.M., Moreno, J., Mägi, M., Nord, A., Potti, J., Ravussin, P.-A., Sokolov, L., Laaksonen, T. 2015. Fecundity selection on multiple male colouration traits does not vary along large geographical cline of trait means in a passerine bird. – The Biological Journal of the Linnean Society 114: 808-827. PDF
- Moore, F.R., Cīrule, D., Kivleniece, I., Vrublevska, J., Rantala, M.J., Sild, E., Sepp, T., Hõrak, P., Krama, T., Krams, I. 2014. Investment in a sexual signal results in reduced survival under extreme conditions in the male great tit (Parus major). – Behavioral Ecology and Sociobiology 69: 151-158. DOI 10.1007/s00265-014-1828-2 PDF
- Meija, L., Krams, I., Cauce, V., Samaletdin, A., Söderholm, P., Meija, R., Lārmane, L., Lejnieks, A., Lietuvietis, V., Adlercreutz, H. 2014. Alkylresorcinol metabolites in urine and plasma as potential biomarkers of rye and wheat fiber consumption in prostate cancer patients and controls. – Nutrition and Cancer – An International Journal 67: 258-265.
- Skrinda, I., Krama, T., Kecko, S., Moore, F.R., Kaasik, A., Meija, L., Lietuvietis, V., Rantala, M.J., Krams, I. 2014. Body height, immunity, facial and vocal attractiveness in young men. – Naturwissenschaften 101: 1017-1025. PDF
- Krams, I.A., Skrinda, I., Kecko, S., Moore, F.R., Krama, T., Kaasik, A., Meija, L., Lietuvietis, V., Rantala, M.J. 2014. Body height affects the strength of immune response in young men, but not young women. – Scientific Reports 4: 6223. DOI: 10.1038/srep06223 PDF
- Vrublevska, J., Krama, T., Rantala, M.J., Mierauskas, P., Todd M. Freeberg, T.M., Krams, I.A. 2014. Personality and density affect nest defence and nest survival in the great tit. – Acta Ethologica 18: 111-120. PDF
- Møller, A.P., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouslama, Z., Bouvier, J.-C., Camprodon, J., Cecere, F., Charmantier, A., Charter, M., Cichoń, M., Cusimano, C., Czeszczewik, D., Doligez, B., Doutrelant, C., Eens, M., Eeva, T., Faivre, B., Peter N. Ferns, P.N., Forsman, J.T., Garcia-del-Rey, E., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Goźdź, I., Gregoire, A., Gustafsson, L., Hartley, I.R., Heeb, P., Hinsley, S.A., Isenmann, P., Jacob, S., Järvinen, A., Juškaitis, R., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Lundberg, A., Mainwaring, M.C., Mänd, R., Massa, B., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Morales, J., Morin, X., Nager, R.G., Nilsson, J.- Å., Nilsson, S.G., Norte, A.C., Orell, M., Perret, P., Pimentel, C.S., Pinxten, R., Priedniece, I., Quidoz, M.-C., Remeš, V., Richner, H., Diez, H.R., Rytkönen, S., Senar, J.C., Seppänen, J.T., da Silva, L.P., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Török, J., Tryjanowski, P., van Noordwijk, A.J., von Numers, M., Walankiewicz, W., Lambrechts, M.M. 2014. Variation in clutch size in relation to nest size in birds. – Ecology and Evolution 4: 3583-3593. PDF
- Freeberg, T.M., Krama, T., Vrublevska, J., Krams, I., Kullberg, C. 2014. Tufted titmouse (Baeolophus bicolor) risk-sensitive foraging and calling in the face of threat. – Animal Cognition 17: 1341-1352. PDF
- Møller, A.P; Adriaensen, F.; Artemyev, A.; Bańbura, J.; Barba, E.; Biard, C.; Blondel, J.; Bouslama, Z.; Bouvier, J.-C.; Camprodon, J.; Cecere, F.; Chaine, A.; Charmantier, A.; Charter, M.; Cichoń, M.; Cusimano, C.; Czeszczewik, D.; Doligez, B.; Doutrelant, C.; Dubiec, A.; Eens, M.; Eeva, T.; Faivre, B.; Peter N. Ferns, P.N.; Forsman, J.T.; Garcia-del-Rey, E.; Goldshtein, A.; Goodenough, A.E.; Gosler, A.G.; Goźdź, I.; Gregoire, A.; Gustafsson, L.; Hartley, I.R.; Heeb, P.; Hinsley, S.A.; Isenmann, P.; Jacob, S.; Järvinen, A.; Juškaitis, R.; Kania, W.; Korpimäki, E.; Krams, I.; Laaksonen, T.; Leclercq, B.; Lehikoinen, E.; Loukola, O.; Lundberg, A.; Mainwaring, M.C.; Mänd, R.; Massa, B.; Mazgajski, T.D.; Merino, S.; Mitrus, C.; Mönkkönen, M.; Morales-Fernaz, J.; Moreno, J.; Morin, X.; Nager, R.G.; Nilsson, J.- Å.; Nilsson, S.G.; Norte, A.C.; Orell, M.; Perret, P.; Perrins, C.M.; Pimentel, C.S.; Pinxten, R.; Priedniece, I.; Quidoz, M.-C.; Remeš, V.; Richner, H.; Diez, H.R.; Russell, A.; Rytkönen, S.; Senar, J.C.; Seppänen, J.T.; da Silva, L.P.; Slagsvold, T.; Solonen, T.; Sorace, A.; Stenning, M.J.; Török, J.; Tryjanowski, P.; van Noordwijk, A.J.; von Numers, M.; Walankiewicz, W.; Lambrechts, M.M. 2014. Clutch size variation in Western Palearctic secondary hole-nesting passerine birds in relation to nest box design. – Methods in Ecology and Evolution 5: 353–362. DOI: 10.1111/2041-210X.12160 PDF
- Krams, I., Krama, T., Moore, F.R., Kivleniece, I., Kuusik, A., Freeberg, T.M., Mänd, R., Rantala, M.J., Daukšte, J., Mänd, M. 2014. Male mealworm beetles increase resting metabolic rate under terminal investment. – Journal of Evolutionary Biology 27: 541–550. PDF
- Loukola, O.J., Seppänen, J.-T., Krams, I., Torvinen, S.S. & Forsman, J.T. 2014. Observed fitness may affect niche overlap in competing species via selective social information use. – American Naturalist 182-474-483. doi: 10.1086/671815 PDF
- Krams, I.A; Vrublevska, J.; Sepp, T.; Abolins-Abols, M.; Rantala, M.J.; Mierauskas, P.; Krama, T. 2014. Sex-specific associations between nest defence, exploration and breathing rate in breeding pied flycatchers. – Ethology 120: 492–501. DOI: 10.1111/eth.12222 PDF
- Krams, I., Daukšte, J., Kivleniece, I., Krama, T. & Rantala, M.J. 2013. Previous encapsulation response enhances within individual protection against fungal parasite in the mealworm beetle Tenebrio molitor. – Insect Science 20: 771-777; doi: 10.1111/j.1744-7917.2012.01574.x PDF
- Ruuskanen, S., Laaksonen, T., Morales, J., Moreno, J., Mateo, R., Belskii, E., Bushuev, A., Jarvinen., A., Kerimov, A., Krams, I., Morosinotto, C., Mand, R., Orell, M., Qvarnstrom, A., Wageningen, F., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., Eeva, T. 2013. Large-scale geographical variation in eggshell metal and calcium content in a passerine bird (Ficedula hypoleuca). – Environmental Science and Pollution Research 21: 3304-3317. PDF
- Krams, I., Vrublevska, J., Koosa, K., Krama, T., Mierauskas, P., Rantala, M.J. & Tilgar, V. 2013. Hissing calls improve survival in incubating female great tits (Parus major). – Acta Ethologica 17: 83–88. PDF
- Krams, I., Kivleniece, I., Kuusik, A., Krama, T., Freeberg, T.M., Mänd, R., Sivacova, L., Rantala, M.J. & Mänd, M. 2013. High repeatability of anti-predator responses and resting metabolic rate in a beetle. – Journal of Insect Behavior 27: 57–66; doi: 10.1007/s10905-013-9408-2 PDF
- Krams, I., Kokko, H., Vrublevska, J., Āboliņš-Ābols, M., Krama, T. & Rantala, M.J. 2013. The excuse principle can maintain cooperation through forgivable defection in the Prisoner s Dilemma game. – Proceedings of the Royal Society B, 280: 20131475; doi: 10.1098/rspb.2013.1475 PDF
- Krams, I., Daukšte, J., Kivleniece, I., Kaasik, A., Krama, T., Freeberg, T.M. & Rantala, M.J. 2013. Trade-off between cellular immunity and life span in mealworm beetles Tenebrio molitor. – Current Zoology, 59: 340-346; ISSN: 1674-5507 PDF
- Krams, I., Cīrule, D., Vrublevska, J., Nord, A., Rantala, MJ. & Krama, T. 2013. Nocturnal loss of body reserves reveals high survival risk for subordinate great tits wintering at extremely low ambient temperatures. – Oecologia, 172: 339-346; doi: 10.1007/s00442-012-2505-7 PDF
- Meija, L., Söderholm, P., Samaletdin, A., Ignace, G., Siksna, I., Joffe, R., Lejnieks, A., Lietuvietis, V., Krams, I. & Adlercreutz, H. 2013. Dietary intake and major sources of plant lignans in Latvian men and women. – International Journal of Food Sciences and Nutrition 64: 535-543; doi:10.3109/09637486.2013.765835 PDF
- Krams, I., Vrublevska, J., Cīrule, D., Kivleniece, I., Krama, T., Rantala, M.J., Kaasik, A., Hõrak, P. & Sepp T. 2013. Stress, behaviour and immunity in wild-caught wintering great tits (Parus major). – Ethology, 119: 397-406; doi: 10.1111/eth.12075 PDF
- Prokkola, J., Roff, D., Kärkkäinen,T., Krams, I. & Rantala, M.J. 2013. Genetic and phenotypic relationships between immune defense, melanism and life-history traits at different temperatures and sexes in Tenebrio molitor. – Heredity 111:89-96; doi: 10.1038/hdy.2013.20 PDF
- Krams, I., Kivleniece, I., Kuusik, A., Krama, T., Mänd, R., Rantala, M.J., Znotina, S., Freeberg, T.M. & Mänd, M. 2013. Predation promotes survival of beetles with lower resting metabolic rates. – Entomologia Experimentalis et Applicata, 148: 94-103; doi: 10.1111/eea.12079 PDF
- Krams, I.A., Suraka, V., Rantala, M.J., Sepp, T., Mierauskas, P., Vrublevska, J. & Krama, T. 2013. Acute infection of avian malaria impairs concentration of hemoglobin and survival in juvenile altricial birds. – Journal of Zoology 291(1): 34-41; doi: 10.1111/jzo.12043 PDF
- Krams, I., Kivleniece, I., Kuusik, A., Krama, T., Freeberg, T.M., Mänd, R., Vrublevska, J., Rantala, M.J. & Mänd, M. 2013. Predation selects for low resting metabolic rate and consistent individual differences in anti-predator behavior in a beetle. – Acta Ethologica 16: 163-172; doi: 10.1007/s10211-013-0147-3 PDF
- Krama, T., Suraka,V., Hukkanen, M., Rytkönen, S., Orell, M., Cīrule, D., Rantala, M.J. & Krams, I. 2013. Physiological condition and blood parasites of breeding great tits: a comparison of core and northernmost population. – Journal of Ornithology 154: 1019-1028; doi: 10.1007/s10336-013-0969-9 PDF
- Rantala, M.J., Coetzee, V., Moore, F., Skrinda, I., Kecko, S., Krama, T., Kivleniece, I. & Krams, I. 2013. Facial attractiveness is related to women’s cortisol and body fat, but not with immune responsiveness. – Biology Letters 9: 20130255; doi: 10.1098/rsbl.2013.0255 PDF
- Moore, F. R., Coetzee, V., Contreras-Garduño, J., Debruine, L. M., Kleisner, K., Krams, I., Marcinkowska, U., Nord, A., Perrett, D. I., Rantala, M. J., Schaum, N. & Suzuki, T. N. 2013. Cross-cultural variation in women s preferences for cues to sex- and stress-hormones in the male face. – Biology Letters, 9: 20130050; doi: 10.1098/rsbl.2013.0050 PDF
- Suhonen, J., Suutari, E., Kaunisto, K. M. & Krams, I. 2013. Patch area of macrophyte Stratioites aloides as a critical resource for declining dragonfly Aeshna viridis. – Journal of Insect Conservation, 17: 393-398; doi: 10.1007/s10841-012-9521-0 PDF
- Morales, J., Ruuskanen, S., Laaksonen, T., Eeva, T., Mateo, R., Belskii, E., Ivankina, E. V., Jarvinen, A., Kerimov, A., Korpimaki, E., Krams, I., Mänd, R., Morosinotto, C., Orell, M., Qvarnstrom, A., Siitari, H., Slater, F. M., Tilgar, V., Visser, M. E., Winkel, W., Zang, H. & Moreno, J. 2013. Variation in eggshell traits between geographically distant populations of pied flycatchers Ficedula hypoleuca. – Journal of Avian Biology, 44: 111-120; doi: 10.1111/j.1600-048X.2012.05782.x PDF
- Rantala, M.J., Coetzee, V., Moore, F.R., Skrinda, I., Kecko, S., Krama, T., Kivleniece, I. & Krams, I. 2013. Adiposity, compared with masculinity, serves as a more valid cue to immunocompetence in human mate choice. – Proceedings of the Royal Society B - Biological Sciences, 280: 20122495; doi: 10.1098/rspb.2012.2495 PDF CORRECTION PDF
- Krama, T., Vrublevska, J., Freeberg, T. M., Kullberg, C., Rantala, M. J. & Krams, I. 2012. You mob my owl, I’ll mob yours: birds play tit-for-tat game. – Scientific Reports, 2: 800; doi: 10.1038/srep00800 PDF
- Krams, I., Suraka, V., Cirule, D., Hukkanen, M., Tummeleht, L., Mierauskas, P., Rytkönen, S., Rantala, M.J., Vrublevska, J., Orell, M. & Krama, T. 2012. A comparison of microscopy and PCR diagnostics for low intensity infections of haemosporidian parasites in the Siberian tit Poecile cinctus. – Annales Zoologici Fennici, 49: 331-340; ISSN: 0003-455X DOWNLOAD PDF
- Krams, I., Suraka, V., Rattiste, K., Abolins-Abols, M., Krama, T., Rantala, M. J., Mierauskas, P., Cirule, D. & Saks, L. 2012. Comparative analysis reveals a possible immunity-related absence of blood parasites in common gulls (Larus canus) and black-headed gulls (Chroicocephalus ridibundus). – Journal of Ornithology, 153: 1245-1252; doi: 10.1007/s10336-012-0859-6 PDF
- Freeberg, T. M., Lucas, J. R. & Krams, I. 2012. The complex call of the Carolina chickadee: What can the chick-a-dee call teach us about communication and language? – American Scientist, 100: 398-407; doi: 10.1511/2012.98.398
- Krams, I., Krama, T., Freeberg, T. M., Kullberg, C. & Lucas, J. R. 2012. Linking social complexity and vocal complexity: a parid perspective. – Philosophical Transactions of the Royal Society B-Biological Sciences, 367: 1879-1891; doi: 10.1098/rstb.2011.0222 PDF
- Daukste, J., Kivleniece, I., Krama, T., Rantala, M. J. & Krams, I. 2012. Senescence in immune priming and attractiveness in a beetle. – Journal of Evolutionary Biology, 25: 1298-1304; doi: 10.1111/j.1420-9101.2012.02516.x PDF
- Polkki, M., Krams, I., Kangassalo, K. & Rantala, M. J. 2012. Inbreeding affects sexual signalling in males but not females of Tenebrio molitor. – Biology Letters, 8: 423-425; doi: 10.1098/rsbl.2011.1135 PDF
- Roff, D. A., Prokkola, J. M., Krams, I. & Rantala, M. J. 2012. There is more than one way to skin a G matrix. – Journal of Evolutionary Biology, 25: 1113-1126; doi: 10.1111/j.1420-9101.2012.02500.x PDF
- Krams, I., Daukste, J., Kivleniece, I., Brumelis, G., Cibulskis, R., Abolins-Abols, M., Rantala, M. J., Mierauskas, P. & Krama, T. 2012. Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals. – Forest Ecology and Management, 270: 147-152; doi: 10.1016/j.foreco.2012.01.012 PDF
- Krama, T., Berzins, A., Rytkönen, S., Rantala, M. J., Wheatcroft, D. & Krams, I. 2012. Linking anti-predator behaviour and habitat quality: group effect in nest defence of a passerine bird. – Acta Ethologica, 15: 127-134; doi: 10.1007/s10211-011-0117-6 PDF
- Lehtonen, P. K., Laaksonen, T., Artemyev, A. V., Belskii, E., Berg, P. R., Both, C., Buggiotti, L., Bures, S., Burgess, M. D., Bushuev, A. V., Krams, I., Moreno, J., Magi, M., Nord, A., Potti, J., Ravussin, P. A., Sirkia, P. M., Saetre, G. P., Winkel, W. & Primmer, C. R. 2012. Candidate genes for colour and vision exhibit signals of selection across the pied flycatcher (Ficedula hypoleuca) breeding range. – Heredity, 108: 431-440; doi: 10.1038/hdy.2011.93 PDF
- Krams, I., Vrublevska, J., Cirule, D., Kivleniece, I., Krama, T., Rantala, M. J., Sild, E. & Hõrak, P. 2012. Heterophil/lymphocyte ratios predict the magnitude of humoral immune response to a novel antigen in great tits (Parus major). – Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 161: 422-428; doi:10.1016/j.cbpa.2011.12.018 PDF
- Rantala, M.J., Moore, F.R., Skrinda, I., Krama, T., Kivleniece, I., Kecko, S., & Krams, I. 2012. Evidence for the stress-linked immunocompetence handicap hypothesis in humans. – Nature Communication, 3: 694; doi: 10.1038/ncomms1696 PDF
- Cirule, D., Krama, T., Vrublevska, J., Rantala, M. J. & Krams, I. 2012. A rapid effect of handling on counts of white blood cells in a wintering passerine bird: a more practical measure of stress? – Journal of Ornithology, 153(1): 161-166; doi: 10.1007/s10336-011-0719-9 PDF
- Ruuskanen, S., Siitari, H., Eeva, T., Belskii, E., Järvinen, A., Kerimov, A., Krams, I., Moreno, J., Morosinotto, C., Mänd, R., Möstl, E., Orell, M., Qvarnström, A., Salminen, J.-P., Slater, F., Tilgar, V., Visser, M.E., Winkel, W., Zang, H. & Laaksonen, T. 2011. Geographical variation in egg mass and egg content in a passerine bird. – PLOS ONE, 6(11): e25360; doi:10.1371/journal.pone.0025360 PDF
- Krams, I., Cīrule, D., Krama T. & Vrublevska, J. 2011. Extremely low ambient temperature affects haematological parameters and body condition in wintering great tits (Parus major). – Journal of Ornithology, 152: 889-895; doi: 10.1007/s10336-011-0672-7 PDF
- Ilvonen, S., Ilvonen, J., Kaunisto, K.M., Krams, I. & Suhonen, J. 2011. Can infection by eugregarine parasites mediate species coexistence in Calopteryx damselflies? – Ecological Entomology, 36: 582-587; doi: 10.1111/j.1365-2311.2011.01307.x PDF
- Krams, I., Daukšte, J., Kivleniece, I., Krama, T. & Rantala, M.J. 2011. Overwinter survival depends on immune defence and body length in male Aquarius najas water striders. – Entomologia Experimentalis et Applicata, 140: 45-51; doi: 10.1111/j.1570-7458.2011.01132.x PDF
- Seppänen, J.-T., Forsman, J.T., Mönkkönen, M., Krams, I. & Salmi, T. 2011. New behavioural trait adopted or rejected by observing heterospecific tutor fitness. – Proceedings of the Royal Society B - Biological Sciences, 278: 1736-1741; doi: 10.1098/rspb.2010.1610 PDF
- Krams, I., Daukšte, J., Kivleniece, I., Krama, T., Rantala, M.J., Ramey, G. & Šauša, L. 2011. Female choice reveals terminal investment in male mealworm beetles, Tenebrio molitor, after a repeated activation of immune system. – Journal of Insect Science 11: 56; available online: insectscience.org/11.56; ISSN: 1536-2442 PDF
- Eeva, T., Ruuskanen, S., Salminen, J.-P., Belskii, E., Järvinen, A., Kerimov, A., Korpimäki, E., Krams, I., Moreno, J., Morosinotto, C., Mänd, R., Orell, M., Qvarnström, A., Siitari, H., Slater, F.M., Tilgar, V., Visser, M.E., Winkel, W., Zang, H & Laaksonen, T. 2011. Geographical trends in the yolk carotenoid composition of the pied flycatcher (Ficedula hypoleuca). – Oecologia 165: 277-287; doi: 10.1007/s00442-010-1772-4 PDF
- Krams, I., Cīrule, D., Krama, T., Hukkanen, M., Rytkönen, S., Orell, M., Iezhova, T., Rantala, M.J. & Tummeleht, L. 2010. Effect of forest management on haematological parameters, blood parasites, and reproductive success of the Siberian tit Poecile cinctus in northern Finland. – Annales Zoologici Fennici 47: 335-346. DOWNLOAD PDF
- Kivleniece, I., Krams, I., Daukšte, J., Krama, T. & Rantala, M.J. 2010. Sexual attractiveness of immune challenged male mealworm beetles suggests terminal investment in reproduction. – Animal Behaviour 80: 1015-1021; doi: 10.1016/j.anbehav.2010.09.004 PDF
- Bērziņš A., Krama T., Krams I., Freeberg T.M., Kivleniece I., Kullberg C. & Rantala M.J. 2010 Mobbing as a tradeoff between safety and reproduction in a songbird. – Behavioral Ecology 21: 1054-1060. PDF
- Krams, I., Krama, T., Berzins, A. & Rantala, M.J. 2010. The risk of predation favors cooperation among breeding prey. – Communicative & Integrative Biology 3: 1-2.
- Krams, I., Bērziņš, A., Krama, T., Wheatcroft, D., Igaune, K & Rantala, M.J. 2010. The increased risk of predation enhances cooperation. – Proceedings of the Royal Society London B. 277: 513-518. PDF
- Krams, I., Cīrule, D., Suraka, V., Krama, T., Rantala, M.J. & Ramey, G. 2010. Fattening strategies of wintering great tits support the optimal body mass hypothesis under conditions of extremely low ambient temperature. – Functional Ecology 24: 172-177. PDF
- Lehtonen, P.K., Laaksonen, T., Artemyev, A.V., Belskii, E., Both, C., Bureš, S., Bushuev, A.V., Krams, I., Moreno, J., Mägi, M., Nord, A., Potti, J., Ravussin, P.-A., Sirkiä, P.M., Sætre, G.-P. & Primmer, C.R. 2009. Geographic patterns of genetic differentiation and plumage colour variation are different in the pied flycatcher (Ficedula hypoleuca). – Molecular Ecology 18:4463-4476. doi: 10.1111/j.1365-294X.2009.04364.x PDF
- Krama T., Krams I., Mänd R. & Igaune K. 2009. Reciprocal Altruism in Birds. VDM Verlag Dr. Müller. ISBN: 978-3-639-12024-0
- Wheatcroft, D.J. & Krams, I. 2009. Response to Russell and Wright: avian mobbing. – Trends in Ecology and Evolution 24, 5-6.
- Krams, I., Bērziņš, A. & Krama, T. 2009. Group effect in nest defence behaviour of breeding pied flycatchers, Ficedula hypoleuca. – Animal Behaviour 77, 513-517. doi:10.1016/j.anbehav.2008.11.007 PDF
- Krama, T., Krams, I. and Igaune, K. 2008. Effects of cover on loud trill‐call and soft seet‐call use in the crested tit Parus cristatus. – Ethology 114: 656-661. PDF
- Igaune, K., Krams, I., Krama, T. & Bobkova, J. 2008. White storks Ciconia ciconia eavesdrop on mating calls of moor frogs Rana arvalis. – Journal of Avian Biology 39: 229-232. doi: 10.1111/j.2008.0908-8857.04180.x PDF
- Krams, I., Krama T., Igaune, K. & Mänd, R. 2008. Experimental evidence of reciprocal altruism in the pied flycatcher. – Behavioral Ecology and Sociobiology 62: 599-605. PDF
- Krams, I., Krama, T., Igaune, K. & Mänd, R. 2007. Long-lasting mobbing of the pied flycatcher increases the risk of nest predation. – Behavioral Ecology 18: 1082-1084. PDF
- Krams, I., Krama, T. & Igaune, K. 2006. Mobbing behaviour: reciprocity-based co-operation in breeding pied flycatcher Ficedula hypoleuca. – Ibis 148: 50-54. PDF
- Krams, I., Krama, T. & Igaune, K. 2006. Alarm calls of wintering great tits Parus major: warning of mate, reciprocal altruism or a message to the predator? – Journal of Avian Biology 37: 131-136. PDF
- Krama, T. & Krams, I. 2005. Cost of mobbing call to breeding pied flycatcher, Ficedula hypoleuca. – Behavioral Ecology 16: 37-40. PDF
- Rytkönen, S. & Krams, I. 2003. Does foraging behaviour explain the poor breeding success of great tits Parus major in northern Europe? – Journal of Avian Biology 34: 288-297. PDF
- Krams, I. 2002. Mass-dependent take-off ability in wintering great tits (Parus major): comparison of top-ranked adult males and subordinate juvenile females. – Behavioral Ecology and Sociobiology 51: 345-349. PDF
- Krams, I. & Krama, T. 2002. Interspecific reciprocity explains mobbing behaviour of the breeding chaffinches, Fringilla coelebs. – Proceedings of the Royal Society of London, Series B 269: 2345-2350. PDF
- Krams, I.A., Krams, T. & Černihovičs J. 2001. Selection of foraging sites in mixed willow and crested tit flocks: rank-dependent strategies. – Ornis Fennica 78: 1-11. PDF
- Krams, I. 2001. Perch selection by singing chaffinches: a better view of surroundings and the risk of predation. – Behavioral Ecology 12: 295-300. PDF
- Krams, I. 2001. Communication in crested tits and the risk of predation. – Animal Behaviour 61: 1065-1068. PDF
- Krams, I. 2001. Seeing without being seen: a removal experiment with mixed flocks of willow and crested Tits Parus montanus and P. cristatus. – Ibis 143: 476-481. PDF
- Krams, I. & Thiede, W. 2000. Wo finden die Meisentrupps im Kiefernwald die Nahrung und wie sind die Trupps gegliedert? – Ökologie der Vögel (Ecol. Birds) 22: 107-118.
- Krams, I. 2000. Long-range call use in dominance-structured crested tit Parus cristatus winter groups. – Journal of Avian Biology 31: 15-19. PDF
- Krams, I. 2000. Length of feeding day and body weight of great tits in a single- and two-predator environment. – Behavioral Ecology and Sociobiology 48: 147-153. PDF
- Krams, I. 1998. Dominance-specific vigilance in the great tit. – Journal of Avian Biology 29: 55-60. PDF
- Krams, I. 1998. Rank-related fattening strategies of willow tit Parus montanus and crested tit P. cristatus mixed flock members. – Ornis Fennica 75: 19-26. PDF
- Krams, I. 1998. Nest site selection of the white-backed woodpecker in eastern Latvia. – Ornis Svecica 8: 11-16.
- Krams, I. 1998. Individuals adjust their body reserves to dominance position within mixed flocks of the willow (Parus montanus) and the crested tit (P. cristatus): a field experiment. – Polish Journal of Ecology 46: 209-218.
- Krams, I. A. 1996. Predation risk and shifts of foraging sites in mixed willow and crested tit flocks. – Journal of Avian Biology 27: 153-156. PDF
Chapters, book reviews:
- Krams, I. 2021. Reciprocal Altruism. In: Shackelford T. K and Weekes-Shackelford V.A. (eds.) – Encyclopedia of Evolutionary Psychological Science. Springer Nature (in press).
- Krams, I. 2021. Emotional Dispositions. In: Shackelford T. K and Weekes-Shackelford V.A. (eds.) – Encyclopedia of Evolutionary Psychological Science. Springer Nature (in press).
- Meija, L., Krams, I. 2019. Rey. In: Whole Grains and their Bioactives: Composition and Health (J. Johnson & T. Wallace, eds.). John Wiley & Sons Ltd.
- Krams, I. 2013. Book Review (Gifts of the Crow: How Perception, Emotion, and Thought Allow Smart Birds to Behave Like Humans. John Marzluff and Tony Angell. 2012. Simon & Schuster, New York. 287 pp. ISBN 9781439198735). – The Auk 130: 556; doi: 10.1525/auk.2013.130.3.555
- Krams I. 2010. Interspecific Communication. In: Breed M.D. and Moore J. (eds.) – Encyclopedia of Animal Behavior, volume 2, pp. 196-202 Oxford: Academic Press.
Papers in non-peer-reviewed journals:
- Krams, I. 2000. Abnahme üuberwinternder Feldspatzen im Süudosten Lettlands. – Ornithologische Mitteilungen 52 (4): 139-141.
- Krams, I. 2000. Die radioaktive Verseucofhung der Vögel und ihrer Nahrungsketten an der Südküste des Weißen Meeres. – Ornithologische Mitteilungen 52 (5): 167.
- Krams, I. A. 1998. Kohlmeisen ahmen im Winter die Rufe anderer Meisen nach. – Ornithologische Mitteilungen 50: 45-46.
- Bergmanis, U., Petrins, A., Strazds, M. & Krams, I. 1997. Possible hybridization of spotted eagle Aquila clanga and lesser-spotted eagle A. pomarina in eastern Latvia. – Birds in Nature 6.3: 2-6. (in Latvian with English summary).
- Krams, I. 1993. Composition of the forest wintering mixed-species tit flocks in Latvia and Lithuania. – The Ring 16: 96-97.
- Krams, I. 1993. Radioactive contamination of birds and their food web pathways in the area of the White Sea. – The Ring 16: 97.
- Krams, I. 1990. Overnight weight loss of roosting great tits (Parus major) during severe winters. – Acta Ornithologica Lituanica 2: 122-130.
- Krams, I. 1987. Unfavourable weather condition influence on spring migration of birds in the vicinity of the town of Krāslava. – Birds in Nature 1: 102-104. (in Latvian).
- Lipsbergs, J., Stalidzāns, J. & Krams, I. 1981. Ground nesting of the merlin - Falco columbarius L. in Latvia. – Rare Plants and Animals 2: 40-42. (in Latvian with English summary).
Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird