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  1. Article

    Open Access

    Successful invasion: camera trap distance sampling reveals higher density for invasive raccoon dog compared to native mesopredators

    Monitoring population parameters of invasive species gains importance as these species continue to expand all over the world. Monitoring of invasive mammalian mesopredators is, however, complicated due to thei...

    V. Selonen, J. E. Brommer, C. Klangwald, T. Laaksonen in Biological Invasions (2024)

  2. Article

    Open Access

    Invasive species control with apex predators: increasing presence of wolves is associated with reduced occurrence of the alien raccoon dog

    The role of an alien predator in the community depends on its interaction with native predators. The absence of apex predators may facilitate outbreaks of invasive mesopredators, but the effect of apex predato...

    V. Selonen, J. E. Brommer, S. Holopainen, K. Kauhala, H. Krüger in Biological Invasions (2022)

  3. No Access

    Article

    Sex-dependent responses to increased parental effort in the pied flycatcher

    The optimal number of offspring for males and females may differ, as males and females invest differently in different aspects of reproduction. This creates potential for a sexual conflict leading to reduced r...

    P. E. Järvistö, S. Calhim, W. Schuett, W. Velmala in Behavioral Ecology and Sociobiology (2016)

  4. No Access

    Article

    Foster, but not genetic, father plumage coloration has a temperature-dependent effect on offspring quality

    Secondary sexual characters have most likely evolved through sexual selection because such traits indicate the genetic or phenotypic quality of the bearer. While genetic variation in such fitness-related trait...

    P. E. Järvistö, S. Calhim, W. Schuett, W. Velmala in Behavioral Ecology and Sociobiology (2015)

  5. No Access

    Article

    Fluctuating selection and immigration as determinants of the phenotypic composition of a population

    It is important to identify the factors that affect the evolutionary potential of populations to respond to environmental changes. Such processes are for example the ones affecting the amount of heritable phen...

    Päivi M. Sirkiä, M. Virolainen, E. Lehikoinen, T. Laaksonen in Oecologia (2013)

  6. No Access

    Article

    Breeding time trends of the Crested Tit (Lophophanes cristatus) in southern Finland: comparison of data sources

    We analyzed temporal and spatial variation in timing of breeding of a highly resident bird species, the Crested Tit (Lophophanes cristatus), over the past 86 years in southern Finland. Besides describing temporal...

    T. Eeva, P. Andelmin, T. Hokkanen, P. Riivari, M. P. Ahola in Journal of Ornithology (2012)

  7. Article

    Candidate genes for colour and vision exhibit signals of selection across the pied flycatcher (Ficedula hypoleuca) breeding range

    The role of natural selection in sha** adaptive trait differentiation in natural populations has long been recognized. Determining its molecular basis, however, remains a challenge. Here, we search for signa...

    P K Lehtonen, T Laaksonen, A V Artemyev, E Belskii, P R Berg, C Both in Heredity (2012)

  8. Article

    Population fragmentation leads to isolation by distance but not genetic impoverishment in the philopatric Lesser Kestrel: a comparison with the widespread and sympatric Eurasian Kestrel

    Population fragmentation is a widespread phenomenon usually associated with human activity. As a result of habitat transformation, the philopatric and steppe-specialist Lesser Kestrel Falco naumanni underwent a s...

    M Alcaide, D Serrano, J J Negro, J L Tella, T Laaksonen, C Müller, A Gal in Heredity (2009)

  9. No Access

    Article

    Influence of exteroceptive contextual conditions upon internal drug stimulus control

    Rats were trained in a spatial T-maze discrimination either in a drugged (D=pentobarbital, 17.5 mg/kg) or in a non-drugged (N=saline) state (drug discrimination learning). Either of two external discriminative...

    T. U. C. Järbe, T. Laaksonen, R. Svensson in Psychopharmacology (1983)