• Computational animal welfare: towards cognitive architecture models of animal sentience, emotion and wellbeing 

      Budaev, Sergei; Kristiansen, Tore S; Giske, Jarl; Eliassen, Sigrunn (Journal article; Peer reviewed, 2020)
      To understand animal wellbeing, we need to consider subjective phenomena and sentience. This is challenging, since these properties are private and cannot be observed directly. Certain motivations, emotions and related ...
    • Conditions favouring hard seededness as a dispersal and predator escape strategy 

      Paulsen, Torbjørn Rage; Högstedt, Göran; Ken, Thompson; Vandvik, Vigdis; Eliassen, Sigrunn (Peer reviewed; Journal article, 2014-09-16)
      1. The water-impermeable seed coat of ‘hard’ seeds is commonly considered a dormancy trait. Seed smell is, however, strongly correlated with seed water content, and hard seeds are therefore olfactionally cryptic ...
    • The crypsis hypothesis explained: a reply to Jayasuriya et al. (2015) 

      Paulsen, Torbjørn Rage; Colville, Louise; Daws, Matthew I.; Eliassen, Sigrunn; Högstedt, Göran; Kranner, Ilse; Thompson, Ken; Vandvik, Vigdis (Peer reviewed; Journal article, 2015-08-18)
      In imbibing seeds, resumption of metabolism leads to the unavoidable release of volatile by-products that are perceived as cues by rodent seed predators. The crypsis hypothesis proposes that the primary function of a ...
    • Decision-making from the animal perspective: Bridging ecology and subjective cognition 

      Budaev, Sergei; Jørgensen, Christian; Mangel, Marc; Eliassen, Sigrunn; Giske, Jarl (Journal article; Peer reviewed, 2019-05-14)
      Organisms have evolved to trade priorities across various needs, such as growth, survival, and reproduction. In naturally complex environments this incurs high computational costs. Models exist for several types of decisions, ...
    • The emotion system promotes diversity and evolvability 

      Giske, Jarl; Eliassen, Sigrunn; Fiksen, Øyvind; Jakobsen, Per Johan; Aksnes, Dag Lorents; Mangel, Marc; Jørgensen, Christian (Peer reviewed; Journal article, 2014-08-06)
      Studies on the relationship between the optimal phenotype and its environment have had limited focus on genotype-to-phenotype pathways and their evolutionary consequences. Here, we study how multi-layered trait architecture ...
    • Extra-pair mating and evolution of cooperative neighbourhoods 

      Eliassen, Sigrunn; Jørgensen, Christian (Peer reviewed; Journal article, 2014-07-02)
      A striking but unexplained pattern in biology is the promiscuous mating behaviour in socially monogamous species. Although females commonly solicit extra-pair copulations, the adaptive reason has remained elusive. We use ...
    • Foraging ecology and learning. Adaptive behavioural strategies and the value of information 

      Eliassen, Sigrunn (Doctoral thesis, 2006-12-12)
      All animals face the challenge of acquiring resources for growth, survival, and reproduction. In environments that vary in time and space, foragers need to make apparently complex foraging decisions on which prey to select, ...
    • From sensing to emergent adaptations: Modelling the proximate architecture for decision-making 

      Eliassen, Sigrunn; Andersen, Bjørn Snorre; Jørgensen, Christian; Giske, Jarl (Peer reviewed; Journal article, 2016-04)
      During the past 50 years, evolutionary theory for animal behaviour has branched into different methodological frameworks focussing on age-, state-, density-, and frequency-dependent processes. These approaches have led to ...
    • Hormones as adaptive control systems in juvenile fish 

      Weidner, Jacqueline; Jensen, Camilla Håkonsrud; Giske, Jarl; Eliassen, Sigrunn; Jørgensen, Christian (Peer reviewed; Journal article, 2020-02-17)
      Growth is an important theme in biology. Physiologists often relate growth rates to hormonal control of essential processes. Ecologists often study growth as a function of gradients or combinations of environmental factors. ...
    • The proximate architecture for decision-making in fish 

      Andersen, Bjørn Snorre; Jørgensen, Christian; Eliassen, Sigrunn; Giske, Jarl (Peer reviewed; Journal article, 2016-09)
      Evolution has since the very beginning resulted in organisms which can sort fitness-related information from noise, evaluate it and respond to it. In animals, the architecture for proximate control of behaviour and physiology ...