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Article
Oona Poranen, Auteur ; Suvi Ruuskanen, AuteurDans Ibis (163(1) 2021)The pace-of-life syndrome hypothesis (POLS) represents an attractive theoretical framework suggesting that physiological and behavioural traits have evolved together with environmental conditions and life-history strategies. POLS predicts that m[...]
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Article
Natalia Pitala, Auteur ; Suvi Ruuskanen, Auteur ; Toni Laaksonen, Auteur ; Blandine Doligez, Auteur ; Barbara Tschirren, Auteur ; Lars Gustafsson, AuteurHormone-mediated maternal effects may be an important mechanism for adjusting offspring phenotype to particular requirements of the environment. We manipulated the levels of testosterone and androstenedione in the yolk of collared flycatcher Fic[...]
Article
Suvi Ruuskanen, Auteur ; Veerle M. Darras, Auteur ; Bonnie de Vries, Auteur ; Marcel E. Visser, Auteur ; Ton G. G. Groothuis, AuteurIn birds, mothers can affect their offspring's phenotype and thereby survival via egg composition. It is not well known to what extent and time-scales environmental variation in resource availability, either via resource constrains or adaptive a[...]
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Maternal transfer of androgens in eggs is affected by food supplementation but not by predation risk
Chiara Morosinotto, Auteur ; Robert L. Thomson, Auteur ; Suvi Ruuskanen, Auteur ; Erkki Korpimäki, Auteur ; Esa Lehikoinen, Auteur ; Erich Mostl, Auteur ; Toni Laaksonen, AuteurMothers may affect the future success of their offspring by varying allocation to eggs and embryos. Allocation may be adaptive based on the environmental conditions perceived during early breeding. We investigated the effects of food supplementa[...]
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Chaminda Pradeep Ratnayake, Auteur ; Chiara Morosinotto, Auteur ; Suvi Ruuskanen, Auteur ; Alexandre Villers, Auteur ; Robert L. Thomson, AuteurPassive Integrated Transponder (PIT) tags have been widely used for ornithological research. However, only few studies have reported their impacts on individuals. We assessed the efficacy of subcutaneous PIT tag implantation in the mantel area o[...]
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Chiara Morosinotto, Auteur ; Suvi Ruuskanen, Auteur ; Robert L. Thomson, Auteur ; Heli Siitari, Auteur ; Erkki Korpimäki, Auteur ; Toni Laaksonen, AuteurPredation risk is an environmental stressor that can induce changes in prey behavior and physiology. Perception of predation risk may indirectly affect offspring traits and future fitness prospects via impacts on the condition of parents. Female[...]
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Suvi Ruuskanen, Auteur ; Toni Laaksonen, AuteurThe hormonal environment during early development, such as maternally derived androgens in bird eggs, has been shown to shape offspring in ways that may have important short- and long-term consequences for phenotype and behavior. However, studie[...]
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Judith Morales, Auteur ; Suvi Ruuskanen, Auteur ; Toni Laaksonen, Auteur ; Tapio Eeva, Auteur ; Rafael Mateo, Auteur ; Eugen Belskii, Auteur ; Elena V. Ivankina, Auteur ; Antero Järvinen, Auteur ; Anvar Kerimov, Auteur ; Erkki Korpimäki, Auteur ; Indriķis Krams, Auteur ; Raivo Maend, Auteur ; Chiara Morosinotto, Auteur ; Markku Orell, Auteur ; Anna Qvarnstrom, Auteur ; Heli Siitari, Auteur ; Fred M. Slater, Auteur ; Vallo Tilgar, Auteur ; Marcel E. Visser, Auteur ; Wolfgang Winkel, Auteur ; Herwig Zang, Auteur ; Juan Moreno, AuteurThe expression and impact of maternal effects may vary greatly between populations and environments. However, little is known about large-scale geographical patterns of variation in maternal deposition to eggs. In birds, as in other oviparous an[...]
