• Ancient origin and maternal inheritance of blue cuckoo eggs 

      Røskaft, Eivin; Møller, Anders P.; Liang, Wei; Sorenson, Michael D; Yang, Canchao; Takasu, Fugo; Stokke, Bård Gunnar; Fossøy, Frode; Moksnes, Arne; Ekrem, Torbjørn; Rutila, Jarkko (Journal article; Peer reviewed, 2016)
      Maternal inheritance via the female-specific W chromosome was long ago proposed as a potential solution to the evolutionary enigma of co-existing host-specific races (or ‘gentes’) in avian brood parasites. Here we report ...
    • Are cuckoos maximizing egg mimicry by selecting host individuals with better matching egg phenotypes? 

      Antonov, Anton Tinchov; Stokke, Bård Gunnar; Fossøy, Frode; Ranke, Peter Sjolte; Liang, Wei; Yang, Canchao; Moksnes, Arne; Shykoff, Jacqui A.; Røskaft, Eivin (Journal article; Peer reviewed, 2012)
      Background: Avian brood parasites and their hosts are involved in complex offence-defense coevolutionary arms races. The most common pair of reciprocal adaptations in these systems is egg discrimination by hosts and egg ...
    • Avian brood parasitism — a growing research area in behavioral ecology (part II) 

      Røskaft, Eivin; Liang, Wei; Stokke, Bård Gunnar (Journal article, 2013)
    • Breeding success in Arctic snow buntings (Plectrophenax nivalis) in relation to climatic variations 

      Kåsi, Tone Kjersti (Master thesis, 2012)
      The ongoing global warming is especially pronounced in the arctic, and it is therefore important to investigate the effect of these changes on arctic ecosystems. In this study the Snow bunting (Plectrophenax nivalis) ...
    • Climate change and coevolution in the cuckoo-reed warbler system 

      Berkowic, Daniel; Stokke, Bård Gunnar; Meiri, Shai; Markman, Shai (Journal article; Peer reviewed, 2015)
      The application of manufactured nanomaterials provides not only advantages resulting from their unique properties, but also disadvantages derived from the possible high energy use and CO2 burden related to their manufacture, ...
    • Coevolutionary adaptations in avian brood parasites and their hosts 

      Stokke, Bård Gunnar (Doctoral thesis, 2001)
      Dette prosjektet har satt søkelyset på to problemstillinger knyttet til samevolusjonen mellom parasitt og vert; 1) utvikling av vertstilpasninger som mottrekk mot tilpasninger hos parasitten, med spesiell fokus på ...
    • Coevolution in Action: Disruptive Selection on Egg Colour in an Avian Brood Parasite and its Host 

      Yang, Chanchao; Liang, Wei; Cai, Yan; Shi, Suhua; Takasu, Fugo; Møller, Anders pape; Antonov, Anton Tinchov; Fossøy, Frode; Moksnes, Arne; Røskaft, Eivin; Stokke, Bård Gunnar (Journal article; Peer reviewed, 2010)
      Background: Trait polymorphism can evolve as a consequence of frequency-dependent selection. Coevolutionary interactions between hosts and parasites may lead to selection on both to evolve extreme phenotypes deviating ...
    • Collision risk in white-tailed eagles. Modelling collision risk using vantage point observations in Smøla wind-power plant 

      May, Roelof Frans; Lund, Pernille Andersen; Langston, Rowena; Dahl, Espen Lie; Bevanger, Kjetil Modolv; Reitan, Ole; Nygård, Torgeir; Pedersen, Hans-Christian; Stokke, Bård Gunnar; Røskaft, Eivin (NINA rapport, Research report, 2010)
      Large soaring birds of prey, such as the white-tailed eagle, are recognized to be perhaps the most vulnerable bird group regarding risk of collisions with turbines in wind-power plants. Their mortalities have called for ...
    • 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 ...
    • Demographic influences of translocated individuals on a resident population of house sparrows 

      Ranke, Peter Sjolte; Skjelseth, Sigrun; Pärn, Henrik; Herfindal, Ivar; Borg Pedersen, Åsa Alexandra; Stokke, Bård Gunnar; Kvalnes, Thomas; Ringsby, Thor Harald; Sæther, Bernt-Erik; Jensen, Henrik (Journal article; Peer reviewed, 2017)
      Translocation of individuals from source populations to augment small populations facing risk of extinction is an important conservation tool. Here we examine sex-specific differences between resident and translocated house ...
    • Disappearance of eggs from non-parasitized nests of brood parasite hosts – the evolutionary equilibrium hypothesis revisited 

      Stokke, Bård Gunnar; Røskaft, Eivin; Moksnes, Arne; Møller, Anders Pape; Antonov, Anton Tinchov; Fossøy, Frode; Liang, Wei; Lopez-Iborra, German; Moskát, Csaba; Shykoff, Jacqui A.; Soler, Manuel; Vikan, Johan Reinert; Yang, Canchao; Takasu, Fugo (Journal article; Peer reviewed, 2016)
      The evolutionary equilibrium hypothesis was proposed to explain variation in egg rejection rates among individual hosts (intra- and interspecific) of avian brood parasites. Hosts may sometimes mistakenly reject own eggs ...
    • Diversity of parasitic cuckoos and their hosts in China 

      Yang, Canchao; Liang, Wei; Antonov, Anton Tinchov; Cai, Yan; Stokke, Bård Gunnar; Fossøy, Frode; Moksnes, Arne; Røskaft, Eivin (Journal article, 2012)
      In this exposé we provide the first review of host use by brood parasitic cuckoos in a multiple-cuckoo system in China, based on our own long-term field data and a compilation of observations obtained from the literature. ...
    • Egg arrangement in avian clutches covaries with the rejection of foreign eggs 

      Polacikova, Lenka; Takasu, Fugo; Stokke, Bård Gunnar; Moksnes, Arne; Røskaft, Eivin; Cassey, Phillip; Hauber, Mark; Grim, Tomas (Journal article, 2013)
      In birds, the colour, maculation, shape, and size of their eggs play critical roles in discrimination of foreign eggs in the clutch. So far, however, no study has examined the role of egg arrangement within a clutch on ...
    • Egg phenotype matching by cuckoos in relation to discrimination by hosts and climatic conditions 

      Avilés, Jesús M.; Vikan, Johan Reinert; Fossøy, Frode; Antonov, Anton Tinchov; Moksnes, Arne; Røskaft, Eivin; Shykoff, Jacqui A.; Møller, Anders pape; Stokke, Bård Gunnar (Journal article, 2012)
      Although parasites and their hosts often coexist in a set of environmentally differentiated populations connected by gene flow, few empirical studies have considered a role of environmental variation in shaping correlations ...
    • 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 ...
    • Host selection in parasitic birds: are open-cup nesting insectivorous passerines always suitable cuckoo hosts? 

      Yang, Canchao; Stokke, Bård Gunnar; Antonov, Anton Tinchov; Cai, Yan; Shi, Suhua; Moksnes, Arne; Røskaft, Eivin; Møller, Anders pape; Liang, Wei; Grim, Tomas (Journal article; Peer reviewed, 2013)
      How do potential hosts escape detrimental interactions with brood parasites? Current consensus is that hole-nesting and granivorous birds avoid brood parasites, like common cuckoos Cuculus canorus , by their inaccessible ...
    • Increase of clutch size triggers clutch destruction behaviour in common moorhens (Gallinula chloropus) during the incubation period 

      Wang, Longwu; Yang, Canchao; Hsu, Yu-Cheng; Antonov, Anton Tinchov; Moksnes, Arne; Røskaft, Eivin; Liang, Wei; Stokke, Bård Gunnar (Journal article; Peer reviewed, 2013)
      Conspecific brood parasitism (CBP) is common in a variety of animal taxa, including birds. In coots (Fulica spp.), and the closely related moorhens (Gallinula spp.), such parasitism is especially common, and hosts experience ...
    • Large hawk-cuckoo Hierococcyx sparveroides parasitism on the Chinese babax Babax lanceolatus may be an evolutionary recent host-parasite system 

      Yang, Canchao; Antonov, Anton Tinchov; Cai, Yan; Stokke, Bård Gunnar; Moksnes, Arne; Røskaft, Eivin; Liang, Wei (Journal article; Peer reviewed, 2012)
      We documented brood parasitism by the poorly studied Large Hawk-Cuckoo on a previously unknown host species, the Chinese Babax. Furthermore, we describe a new egg colour for the Large Hawk-Cuckoo. The parasitism rate of ...
    • Life-history Effects of Metal contamination in Arctic snow buntings (Plectrophenax nivalis) breeding in Adventdalen, Svalbard. 

      Nordnes, Linda Dalen (Master thesis, 2016)
      The present study was the first to investigate element concentrations in feathers of both nestling and adult snow buntings in the Arctic environment of Adventdalen. Significant differences in concentrations between nestling- ...