• Deficiency in egg rejection in a host species as a response to the absence of brood parasitism 

      Yang, Canchao; Wang, Longwu; Cheng, Shun-Jen; Hsu, Yu-Cheng; Stokke, Bård Gunnar; Røskaft, Eivin; Moksnes, Arne; Liang, Wei; Møller, Anders Pape (Journal article, 2015)
      Different populations of a host species subject to variable patterns of selection due to cuckoo parasitism provide an optimal situation for studying natural selection and coevolution in action. We compared egg appearance ...
    • 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. ...
    • Effects of manipulated levels of predation threat on parental provisioning and nestling begging 

      Mutzel, Ariane; Olsen, Anne-Lise; Mathot, Kimberley J; Araya-Ajoy, Yimen; Nicolaus, Marion; Wijmenga, Jan J; Wright, Jonathan; Kempenaers, Bart; Dingemanse, Niels J. (Journal article; Peer reviewed, 2019)
      Parental provisioning behavior is a major determinant of offspring growth and survival, but high provisioning rates might come at the cost of increased predation threat. Parents should thus adjust provisioning activity ...
    • Geographic variation in egg ejection rate by great tits across 2 continents 

      Liang, Wei; Møller, Anders Pape; Stokke, Bård Gunnar; Yang, Canchao; Kovařík, Petr; Wang, Haitao; Yao, Cheng-Te; Ding, Ping; Lu, Xin; Moksnes, Arne; Røskaft, Eivin; Grim, Tomas (Journal article; Peer reviewed, 2016)
      Hosts of brood parasites may vary geographically in their ability to resist parasitism. In contrast, geographic variation in defenses, such as egg rejection, is not expected to be present or vary geographically in unsuitable ...
    • Hawk models, hawk mimics, and antipredator behavior of prey 

      Møller, Anders pape; Stokke, Bård Gunnar; Samia, Diogo SM (Journal article; Peer reviewed, 2015)
      Prey typically respond to potential predators by taking flight. This results in an optimal flight initiation distance (FID) at which the risk of remaining and the cost of flight are equal. Thus, FID is strongly negatively ...
    • Interspecific analysis of vehicle avoidance behaviour in birds 

      Husby, Arild; Husby, Magne (Preprint, 2014)
      Among the most widespread forms of anthropogenic modification of the natural landscape is road construction, with vehicle mortality a major issue affecting amphibians, reptiles, mammals, and birds. Why some species are ...
    • No effect of elevated carbon dioxide on reproductive behaviors in the three-spined stickleback 

      Sundin, Josefin; Vossen, Laura; Nilsson-Sköld, Helen; Jutfelt, Fredrik (Journal article; Peer reviewed, 2017)
      Ocean acidification, the reduction in ocean pH resulting from anthropogenic emissions of carbon dioxide (CO2), has been predicted to alter the behavior of fishes. During experimental exposure to CO2 concentrations projected ...
    • Plaintive cuckoos do not select tailorbird hosts that match the phenotypes of their own eggs 

      Yang, Canchao; Huang, Qiuli; Wang, Longwu; Jiang, Aiwu; Stokke, Bård Gunnar; Fossøy, Frode; Tunheim, Odd Helge; Røskaft, Eivin; Liang, Wei; Møller, Anders Pape (Journal article; Peer reviewed, 2016)
      Laying a mimetic egg is important for a brood parasite to succeed in defeating the defenses of a host that can recognize and reject nonmimetic foreign eggs. Several recent studies suggest that common cuckoos ( Cuculus ...
    • Provisioning tactics of great tits (Parus major) in response to long-term brood size manipulations differ across years 

      Mathot, Kimberley J; Olsen, Anne-Lise; Mutzel, Ariane; Araya-Ajoy, Yimen; Nicolaus, Marion; Westneat, David F.; Wright, Jonathan; Kempenaers, Bart; Dingemanse, Niels J. (Journal article; Peer reviewed, 2017)
      Parents provisioning their offspring can adopt different tactics to meet increases in offspring demand. In this study, we experimentally manipulated brood demand in free living great tits (Parus major) via brood size ...
    • Reject the odd egg: Egg recognition mechanisms in parrotbills 

      Yang, Canchao; Møller, Anders Pape; Røskaft, Eivin; Moksnes, Arne; Liang, Wei; Stokke, Bård Gunnar (Journal article; Peer reviewed, 2014)
      Studies of the behavior of animals when confronted with tasks differing in complexity can improve our understanding of animal cognition and learning mechanisms. Coevolutionary interactions between brood parasites and their ...
    • Sex roles in egg recognition and egg polymorphism in avian brood parasitism 

      Liang, Wei; Yang, Canchao; Antonov, Anton Tinchov; Fossøy, Frode; Stokke, Bård Gunnar; Moksnes, Arne; Røskaft, Eivin; Shykoff, Jacqui A.; Møller, Anders Pape; Takasu, Fugo (Journal article, 2012)
      Avian brood parasites impose strong selection on their hosts leading to the evolution of antiparasite defenses like egg recognition and rejection. Discordance and template-based cognitive mechanisms may form the base for ...