Publications
2019
Ruuskanen S, Hsu BY, Nord A. 2019. Endocrinology of thermoregulation of birds in a changing climate. BioRxiv
Stier A, Bize P, Hsu BY, Ruuskanen S*. 2019. Plastic but repeatable: rapid adjustments of mitochondrial function and density during reproduction in a wild bird species. bioRxiv, 708867
Ruuskanen S*, Mottola G, Anttila K. 2019. Transgenerational endocrine disruption? Experimental copper exposure, but not heat stress, leads to elevated egg thyroid hormone levels. BioRxiv, 717157
Sarraude T, Hsu BY, Groothuis TGG, Ruuskanen S*. 2019. Prenatal thyroid hormone exposure increases growth but not oxidative stress in a wild passerine species. bioRxiv, 578047
Hsu B-Y, Verhagen I, Gienapp P, Darras V, Visser M, Ruuskanen S*. Between- and within-individual variation of maternal thyroid hormone deposition in wild great tits (Parus major). In press, American Naturalist.
Ruuskanen S, Espín S, Sánchez-Virosta P, Sarraude T, Hsu B-Y, Pajunen P, Costa RA, Eens M, Hargitai R, Török J, Eeva T. 2019. Transgenerational endocrine disruption: does elemental pollution affect egg or nestling thyroid hormone levels in a wild songbird? Environmental Pollution, in press.
2018
[35] Hsu B-Y, Doligez B, Gustafsson L & Ruuskanen S. 2018. Transient growth‐enhancing effects of elevated maternal thyroid hormones at no apparent oxidative cost during early postnatal period. Journal of Avian Biology, DOI: 10.1111/jav.01919
[34] Ruuskanen S, Hsu B-Y, Heinonen A, Darras VM, Vainio M, Sarraude T, Rokka A. A new method for measuring thyroid hormones using nano-LC-MS/MS. Journal of Chromatography B 1093-94:24-30
[33] Ruuskanen S & Hsu B-Y. 2018. Maternal thyroid hormones – an unexplored mechanism underlying maternal effects in an ecological framework. Physiological and Biochemical Zoology, 91(3): 904-916.
[32]Morosinotto C, Rainio M, Ruuskanen S, Korpimäki E. 2018. Antioxidant Enzyme Activities Vary with Predation Risk and Environmental Conditions in Free-Living Passerine Birds. Physiological and Biochemical Zoology, 91(3): 837-848
2017
[31] Ruuskanen S, Groothuis T, Baugh A, Schaper S, deVries B, van Oers Kees. 2017.Maternal egg hormones in the mating context: the effect of pair personality. Functional Ecology, 32:439-449
[30] Rainio M, Ruuskanen S, Eeva T. 2017. Spatio-temporal variation in the body condition of female pied flycatcher (Ficedula hypoleuca) in a polluted environment. Urban Ecosystems, in press
[29] Ruuskanen S, Morosinotto RL, Thomson RL, Pradeep Ratnayake C, Korpimaki E. Food supplementation, but not predation risk, alters female antioxidant status during breeding. Behavioral Ecology and Sociobiology, 71:4. DOI: 10.1007/s00265-017-2299-z
2016
[28] Ruuskanen S, Darras V, Visser ME, Groothuis TGG. 2016. Effects of experimentally manipulated yolk thyroid hormone levels on offspring development in a wild bird. Hormones and Behavior 81: 38-44.
[27] Ruuskanen S, Groothuis TGG, Gienapp P, Schaper SV, Darras VM, Pereira C, deVries B, Visser ME. 2016. Heritable variation in maternally-derived yolk androgens, thyroid hormones and immune factors. Heredity 117: 184-190.
[26] Ruuskanen S, Groothuis TGG, Schaper, SV, Darras VM, deVries B, Visser ME. 2016. Temperature-induced variation in yolk androgen and thyroid hormone levels in avian eggs. General and Comparative Endocrinology 235: 29-37.
[25] Lessells CM, Ruuskanen S, Schwabl H. 2016. Yolk hormones in great tits: multiple correlates of dihydrotestosterone. Behavioral Ecology and Sociobiology 70: 843-856.
[24] Morosinotto C, Thomson RL, Ruuskanen S, Korpimäki E, Lehikoinen E, Möstl E, Laaksonen T. 2016. Maternal deposition of androgens in eggs is affected by food availability but not by predation risk. Journal of Avian Biology, in press.
2015
[23] Ruiz, S, Espin S, Rainio M, Ruuskanen S, Salminen J-P, Lilley T, Eeva T. 2015. Effects of dietary lead exposure on vitamin levels in great tit nestlings - an experimental manipulation. Journal of Environmental Research 213: 688-697.
[22] Ruuskanen S. 2015. Hormonally–mediated maternal effects in birds: lessons from the flycatcher model system. General and Comparative Endocrinology 244: 283-293.
[21] Ruuskanen S, Darras V, DeVries B, Visser ME, Groothuis TGG. 2015. Experimental manipulation of food availability leads to short-term intra-clutch adjustment in egg mass but not in yolk androgen or thyroid hormones. Journal of Avian Biology 47: 36-46.
[20] Koski T-M, Laaksonen T, Mäntylä E , Ruuskanen S, Li T, Girón-Calva PS, Huttunen L, Blande JD, Holopainen JK, Klemola T. 2015. Do insectivorous birds use volatile organic compounds from plants as foraging cues? Three experimental tests. Ethology 121: 1131-1144.
[19] Ruuskanen S, Eeva T, Kotitalo P, Stauffer J, Rainio M. 2015. No delayed behavioral and phenotypic responses to experimental early-life lead exposure in great tits (Parus major). Environmental Science and Pollution Research 22: 2610-2621.
2014
[18] Rainio M, Eeva T, Lilley T, Stauffer J, Ruuskanen S*. 2014. Effects of early-life lead exposure on oxidative status and phagocytosis activity in great tits (Parus major). Comparative Biochemistry and Physiology 167:24-34
[17] Eeva T, Rainio M, Berglund Å, Stauffer J, Stöwe M, Ruuskanen S*. 2014. Experimental manipulation of dietary lead levels in great tit nestlings –limited effects on growth, physiology and survival. Ecotoxicology 23:914-928
[16] Ratnayake CP, Morosinotto C, Ruuskanen S, Villers A, Thomson RL. 2014. Passive Integrated Transponders (PIT) on a small migratory passerine bird: absence of deleterious short and long-term effects. Ornis Fennica 91:244-255.
2013
[15] Ruuskanen S, Laaksonen T, Morales J, Moreno J, Mateo R, Belskii E, Bushuev A.,Järvinen, A., Kerimov, A., Krams, A., Morosinotto, C., Mänd, R., Orell, M, Qvarnström A., Slater, 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.
[14] Morosinotto C, Ruuskanen S, Thomson RL, Siitari H, Korpimäki E., Laaksonen T. 2013. Predation risk affects the levels of maternal immune factors in avian eggs. Journal of Avian Biology 44: 427-436.
[13] Ruuskanen, S, Laaksonen T. 2013. Sex-specific effects of yolk androgens on begging behavior and digestion in pied flycatchers. Journal of Avian Biology 44: 331-338
[12] Ruuskanen S, Lehikoinen E, Nikinmaa M, Siitari H, Waser W, Laaksonen, T. 2013. Longlasting effects of yolk androgens on phenotype in the pied flycatcher (Ficedula hypoleuca). Behavioral Ecology and Sociobiolology 67:361-372
2012
[11] Ruuskanen S, Doligez B, Gustafsson L, Laaksonen T. 2012. Long-term effects of yolk androgens on phenotype and parental feeding behavior in a wild passerine. Behavioral Ecology and Sociobiology 66: 1201-1201.
[10] Leskinen P, Laaksonen T, Ruuskanen S, Primmer C, Leder E. 2012. The proteomics of feather development in pied flycatchers (Ficedula hypoleuca) with different plumage coloration. Molecular Ecology 21:572-77
[9] Morales J, Ruuskanen S, Laaksonen T, Eeva T, Mateo R, Belskii E, Ivankina, EV, Järvinen A, Kerimov A, Korpimäki E, Krams I, Mänd R, Morosinotto C, Orell M, Qvarnström A, Siitari H, Slater FM, Tilgar V, Visser ME, Winkel W, Zang H, Moreno J. 2012. Variation in eggshell traits between geographically distant populations of pied flycatchers Ficedula hypoleuca. Journal of Avian Biology 44:112-120.
[8] Ruuskanen S, Doligez B, Pitala N, Gustafsson L, Laaksonen T. 2012. Long-term fitness consequences of high yolk androgen levels: sons pay the costs. Functional Ecology 26, 884–894 3.3.2017
2011
[7] 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 ME, Winkel W, Zang H, Laaksonen T. 2011 .Geographical variation in egg mass and egg content in a passerine bird. PloS ONE 6, e25360.
[6] Merilaita S, Vallin A, Kodandaramaiah U, Dimitrova M, Ruuskanen S, Laaksonen T. 2011. Is more better? – number of eyespots and their intimidating effect on naive predators in the peacock butterfly. Behavioral Ecology 22, 1326-1331.
[5] Ruuskanen S, Helle S, Ahola M, Adamczyck F, Möstl E, Laaksonen T. 2011. Digit ratios have poor indicator value in a wild bird population. Behavioral Ecology and Sociobiolology 65, 983-994.
2010
[4] 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 FM, Tilgar V, Visser ME, Winkel W, Zang H, Laaksonen T. 2010. Geographical trends in the yolk carotenoid composition of the pied flycatcher (Ficedula hypoleuca). Oecologia 165, 277-287.
[3] Ruuskanen S, Laaksonen T. 2010. Yolk hormones have sex-specific long-term effects on behavior in the pied flycatcher (Ficedula hypoleuca). Hormones and Behavior 57, 119-127
2009
[2] Pitala N, Ruuskanen, S., Laaksonen, T., Doligez, B., Tschirren, B. & Gustafsson, L. 2009. The effects of experimentally manipulated yolk androgens on growth and immune function of male and female nestling collared flycatchers Ficedula albicollis. Journal of Avian Biology 40, 225-230.
[1] Ruuskanen S., Doligez, B., Tschirren, B., Pitala, N., Gustafsson, L., Groothuis, T.G.G. & Laaksonen, T. 2009. Yolk androgens do not appear to mediate sexual conflict over parental investment. Hormones and Behavior 55, 514-519.