5 Works

Data from: Geographies of an online social network

Balázs Lengyel, Attila Varga, Bence Ságvári, Ákos Jakobi & János Kertész
How is online social media activity structured in the geographical space? Recent studies have shown that in spite of earlier visions about the “death of distance”, physical proximity is still a major factor in social tie formation and maintenance in virtual social networks. Yet, it is unclear, what are the characteristics of the distance dependence in online social networks. In order to explore this issue the complete network of the former major Hungarian online social...

Data from: Effects of perceived predation risk and social environment on the development of three-spined stickleback (Gasterosteus aculeatus) morphology

Nurul I. Ab Ghani, Gábor Herczeg & Juha Merilä
Phenotypically plastic changes in response to variation in perceived predation risk are widespread, but little is known about if and how social environment modulates induced responses to predation risk. We investigated the influence of perceived predation risk (i.e. chemical cues from a predator) and social environment (i.e. one, two or 20 individuals reared together) on three-spined stickleback (Gasterosteus aculeatus) morphology in a factorial common garden experiment. We found that exposure to chemical cues from potential...

Data from: Experimental evidence for sex-specific plasticity in adult brain

Gabor Herczeg, Abigél Gonda, Gergely Balázs, Kristina Noreikiene & Juha Merilä
Background: Plasticity in brain size and the size of different brain regions during early ontogeny is known from many vertebrate taxa, but less is known about plasticity in the brains of adults. In contrast to mammals and birds, most parts of a fish’s brain continue to undergo neurogenesis throughout adulthood, making lifelong plasticity in brain size possible. We tested whether maturing adult three-spined sticklebacks (Gasterosteus aculeatus) reared in a stimulus-poor environment exhibited brain plasticity in...

Data from: Low but contrasting neutral genetic differentiation shaped by winter temperature in European great tits

Mélissa Lemoine, Kay Lucek, Charles Perrier, Verena Saladin, Frank Adriaensen, Emilio Barba, Eduardo J. Belda, Anne Charmantier, Mariusz Cichon, Eeva Tapio, Arnaud Gregoire, Camilla A. Hinde, Arild Johnsen, Jan Komdeur, Raivo Mand, Erik Matthysen, Ana Claudia Norte, Natalia Pitala, Ben C. Sheldon, Tore Slagsvold, Joost M. Tinbergen, Janos Torok, Richard Ubels, Kees Van Oers, Marcel E. Visser … & Tapio Eeva
Gene flow is usually thought to reduce genetic divergence and impede local adaptation by homogenising gene pools between populations. However, evidence for local adaptation and phenotypic differentiation in highly mobile species, experiencing high levels of gene flow, is emerging. Assessing population genetic structure at different spatial scales is thus a crucial step towards understanding mechanisms underlying intraspecific differentiation and diversification. Here, we studied the population genetic structure of a highly mobile species – the great...

Data from: Quantitative genetic analysis of brain size variation in sticklebacks: support for the mosaic model of brain evolution

Kristina Noreikiene, Gábor Herczeg, Abigél Gonda, Gergely Balázs, Arild Husby & Juha Merilä
The mosaic model of brain evolution postulates that different brain regions are relatively free to evolve independently from each other. Such independent evolution is possible only if genetic correlations among the different brain regions are less than unity. We estimated heritabilities, evolvabilities and genetic correlations of relative size of the brain, and its different regions in the three-spined stickleback (Gasterosteus aculeatus). We found that heritabilities were low (average h2 = 0.24), suggesting a large plastic...

Registration Year

  • 2015
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  • Dataset
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Affiliations

  • Eötvös Loránd University
    5
  • University of Helsinki
    3
  • Centre d'Ecologie Fonctionnelle et Evolutive
    1
  • University of Antwerp
    1
  • University of Groningen
    1
  • Nederlands Instituut voor Ecologie
    1
  • University of Oslo
    1
  • University of Zurich
    1
  • University of Bern
    1
  • Hungarian Academy of Sciences
    1