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Blar i NTNU Open på forfatter "Pelabon, Christophe"

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Viser treff 1-20 av 46

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    • Artificial selection on allometry: change in elevation but not slope 

      Egset, Camilla Kalvatn; Hansen, Thomas F; Le Rouzic, Arnaud; Bolstad, Geir Hysing; Rosenqvist, Gunilla; Pelabon, Christophe (Journal article; Peer reviewed, 2012)
      To what extent within-species (static) allometries constitute a constraint on evolution is the subject of a long-standing debate in evolutionary biology. A prerequisite for the constraint hypothesis is that static allometries ...
    • Benefits of Multiple Mating in guppy (Poecilia reticulata) 

      Mathisen, Maria Kristin (Master thesis, 2013)
      Benefits of Multiple Mating in guppy (Poecilia reticulata)
    • Complex constraints on allometry revealed by artificial selection on the wing of Drosophila melanogaster 

      Bolstad, Geir Hysing; Cassara, Jason A.; Marquez, Eladio; Hansen, Thomas F; van der Linde, Kim; Houle, David; Pelabon, Christophe (Journal article, 2015)
      Precise exponential scaling with size is a fundamental aspect of phenotypic variation. These allometric power laws are often invariant across taxa and have long been hypothesized to reflect developmental constraints. Here ...
    • The Demographic buffering hypothesis: Evidence and challenges 

      Hilde, Christoffer Høyvik; Gamelon, Marlène; Sæther, Bernt-Erik; Gaillard, Jean-Michel; Yoccoz, Nigel; Pelabon, Christophe (Peer reviewed; Journal article, 2020)
      In (st)age-structured populations, the long-run population growth rate is negatively affected by temporal variation in vital rates. In most cases, natural selection should minimize temporal variation in the vital rates to ...
    • Demographic buffering of vital rates in age-structured populations 

      Hilde, Christoffer Høyvik (Doctoral theses at NTNU;2021:353, Doctoral thesis, 2021)
      Stochastic demography is essential to accurately predict how populations persist in variable environments. In age- or stage-structured populations, the long-run growth rate is negatively affected by temporal variance in ...
    • Divergence in Thermal Reaction Norms of Life-History Traits Among Populations of Daphnia magna 

      Bartuseviciute, Vitalija (Master thesis, 2018)
      Patterns of phenotypic and genetic variance in thermal reaction norms allow predicting evolutionary response for a population. The ability of phenotypic traits to respond to selection depends on their genetic variance, and ...
    • Does multiple paternity explain phenotypic variation among offspring in wild boar? 

      Gamelon, Marlène; Gayet, Thibault; Baubet, Eric; Devillard, Sébastien; Say, Ludovic; Brandt, Serge; Pelabon, Christophe; Sæther, Bernt-Erik (Journal article; Peer reviewed, 2018)
      During pregnancy, littermates compete to extract maternal resources from the placenta. Unequal extraction of resources leads to developmental differences among offspring and thus within-litter variation in offspring mass. ...
    • Does seed size respond to selection on blossom size? - An artificial selection experiment on Dalechampia scandens 

      Ekrem, Runa Kvamme (Master thesis, 2017)
      1. Within populations variation in seed size may result from phenotypic correlation between seed size and flower size, a hypothesis originally suggested by Primack (1987). Such phenotypic correlation can be generated either ...
    • Earlier onset of flowering and increased reproductive allocation of an annual invasive plant in the north of its novel range 

      Helsen, Kenny; Acharya, Kamal Prasad; Graae, Bente Jessen; De Kort, Hanne; Brunet, Jörg; Chabrerie, Olivier; Cousins, Sara A.O.; De Frenne, Pieter; Hermy, Martin; Verheyen, Kris; Pelabon, Christophe (Journal article; Peer reviewed, 2020)
    • Effects of Experimental Winter Icing and Summer Warming on High Arctic Plant Phenology 

      Hovdal, Solvei Børve (Master thesis, 2017)
      Climate change is expected to have pronounced effects in the Arctic, causing increased temperatures and changes in winter precipitation patterns. For instance, extreme winter rain events often result in ground ice formations ...
    • Effects of rainfall seasonality and seed size on seed dormancy in a perennial tropical plant 

      De Aguiar Martins, Adriana (Master thesis, 2018)
      In seasonal environments, precise timing of germination to match favorable environmental conditions is crucial for successful plant establishment. The timing of germination can be controlled by seed dormancy, i.e. delay ...
    • An empirical test for a zone of canalization in thermal reaction norms 

      Fossen, Erlend Ignacio Fleck; Pelabon, Christophe; Einum, Sigurd (Journal article; Peer reviewed, 2018)
      Theoretical models on the evolution of phenotypic plasticity predict a zone of canalization where reaction norms cross, and genetic variation is minimized in the environment a population most frequently encounter. Empirical ...
    • Evolution of floral traits: from ecological contex to functional integration 

      Albertsen, Elena (Doctoral theses at NTNU;2019:65, Doctoral thesis, 2019)
      Whether macroevolution, that is, evolution above the population level, can be explained by micro-evolutionary processes happening at the population level remains debated. In this thesis, we tested two hypotheses concerning ...
    • Evolution of morphological allometry 

      Pelabon, Christophe; Firmat, Cyril Joel Patrick; Bolstad, Geir Hysing; Voje, Kjetil L.; Houle, David; Cassara, Jason; Le Rouzic, Arnaud; Hansen, Thomas F (Journal article, 2014)
      Morphological allometry refers to patterns of covariance between body parts resulting from variation in body size. Whether measured during growth (ontogenetic allometry), among individuals at similar developmental stage ...
    • Fitness costs of delayed (self-) pollination in a mixed-mating plant 

      Hildesheim, Laura Sophie (Master thesis, 2018)
      Delayed selfing may provide reproductive assurance for plants facing unreliable pollination environments, but may negatively affect the reproductive performance due to inbreeding depression. Furthermore, floral senescence ...
    • Fitness costs of delayed pollination in a mixed-mating plant 

      Hildesheim, Laura; Opedal, Øystein Hjorthol; Armbruster, Scott; Pelabon, Christophe (Journal article; Peer reviewed, 2019)
      Background and Aims To predict the evolutionary consequences of pollinator declines, we need to understand the evolution of delayed autonomous self-pollination, which is expected to evolve as a mechanism of reproductive ...
    • Genetic and environmental effects on the scaling of metabolic rate with body size 

      Fossen, Erlend Ignacio Fleck; Pelabon, Christophe; Einum, Sigurd (Peer reviewed; Journal article, 2019)
      Metabolic rate (MR) often scales with body mass (BM) following a power function of the form MR=aBMb, where log(a) is the allometric intercept and b is the allometric exponent (i.e. slope on a log–log scale). The variational ...
    • Genetic Variation in Metabolic Rate and Correlations with Other Energy Budget Components and Life History in Daphnia magna 

      Einum, Sigurd; Fossen, Erlend Ignacio Fleck; Parry, Victor; Pelabon, Christophe (Peer reviewed; Journal article, 2019)
      Much is known about the genetic variance in certain components of metabolism, most notably resting and maximum metabolic rate. This is in stark contrast to the lack of information on genetic variance in the metabolic rate ...
    • Geographical variation in allometry in the guppy (Poecilia reticulata) 

      Egset, Camilla Kalvatn; Bolstad, Geir Hysing; Rosenqvist, Gunilla; Endler, John A; Pelabon, Christophe (Journal article; Peer reviewed, 2011)
      Variation in static allometry, the power relationship between character size and body size among individuals at similar developmental stages, remains poorly understood. We tested whether predation or other ecological factors ...
    • How Does Spring Migration and Day Length Affect the Diving Ecology of a Capital Breeder Wintering at High Latitudes? 

      Kilen, Heidi (Master thesis, 2016)
      Foraging strategies in animals are influenced by conflicting constraints such as migration, reproduction and seasonal changes in the environment. Sea ducks are capital breeders and rely on endogenous reserves for reproduction. ...

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