• A genetic insight to the population of African savannah elephants (Loxodonta africana) in the Serengeti Ecosystem, Tanzania. 

      Rosenlund, Håvard (Master thesis, 2011)
      African savannah elephants play a vital role in the Serengeti ecosystem with the opportunity to alter the entire ecosystem by its sheer number. Management of these animals are therefore of high importance, but little genetic ...
    • 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 ...
    • Being stressed outside the park — conservation of African elephants (Loxodonta africana) in Namibia 

      Hunninck, Louis; Ringstad, Iris; Jackson, Craig Ryan; May, Roelof Frans; Fossøy, Frode; Uiseb, Kenneth; Killian, Werner; Røskaft, Eivin (Journal article; Peer reviewed, 2017)
      The conservation of the African savanna elephant (Loxodonta africana) is of prime importance for many African countries. Interactions between elephants and humans are known to induce stress and thereby have the potential ...
    • Being stressed outside the park — conservation of African elephants (Loxodonta africana) in Namibia 

      Hunninck, Louis; Ringstad, Iris; Jackson, Craig Ryan; May, Roelof Frans; Fossøy, Frode; Uiseb, Kenneth; Killian, Werner; Røskaft, Eivin (Journal article; Peer reviewed, 2017)
      The conservation of the African savanna elephant (Loxodonta africana) is of prime importance for many African countries. Interactions between elephants and humans are known to induce stress and thereby have the potential ...
    • 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) ...
    • Bruk av miljø-DNA for overvåking av fremmede fiskearter. Utvikling av artsspesifikke markører for gjedde, mort og ørekyt 

      Fossøy, Frode; Dahle, Sondre; Eriksen, Line Birkeland; Spets, Merethe Hagen; Karlsson, Sten; Hesthagen, Trygve (NINA Rapport;1299, Research report, 2017)
      Fossøy, F., Dahle, S., Birkeland Eriksen, L., Hagen Spets, M., Karlsson, S. og Hesthagen, T. 2017. Bruk av miljø-DNA for overvåking av fremmede fiskearter – utvikling av artsspesifikke markører for gjedde, mort og ørekyt ...
    • Bruk av miljø-DNA til overvåkning av små- og storsalamander 

      Taugbøl, Annette; Dervo, Børre K.; Sivertsgård, Rolf; Brandsegg, Hege; Fossøy, Frode (NINA Rapport;1476, Research report, 2018)
      Taugbøl, A., Dervo, B.K., Brandsegg, H., Sivertsgård, R. Fossøy, F. 2018. Bruk av miljø-DNA til overvåkning av små- og storsalamander. NINA Rapport 1476. Norsk institutt for naturforskning. I denne rapporten oppsummerer ...
    • Causes and Consequences of Breeding Synchrony in the Snow Bunting (Plectrophenax nivalis ) 

      Skøien, Elida Arstad (Master thesis, 2015)
      Climate warming is happening rapidly in the Arctic and migratory birds are among the species expected to be affected by the predicted shifts in spring phenology. Using time-series data (1998 - 2014) from a population of ...
    • Characteristics determining host suitability for a generalist parasite 

      Stokke, Bård Gunnar; Ratikainen, Irja Ida; Moksnes, Arne; Røskaft, Eivin; Schulze-Hagen, Karl; Leech, David I.; Møller, Anders pape; Fossøy, Frode (Journal article; Peer reviewed, 2018)
      Host quality is critical for parasites. The common cuckoo Cuculus canorus is a generalist avian brood parasite, but individual females show strong preference for a specific host species. Here, we use three extensive datasets ...
    • 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 ...
    • Contamination in an Arctic Environment: Abiotic and Biotic Impacts of Local Pollution 

      Beitveit, Gina Mariell (Master thesis, 2016)
      The aim of the present investigation was to evaluate whether Longyearbyen coal power plant and Gruve 6 have a significant impact on the chemical element distribution in soil and terrestrial biota in Adventdalen. Soil, ...
    • Dietary composition, overlap and competition between impala and domestic goat as revealed by DNA metabarcoding 

      Fossum, Ingrid Aase Lingaas (Master thesis, 2017)
      In a world with a rapidly growing human population and limited resources, it is important to understand how we interact with wildlife to ensure their conservation. In Tanzania, the human population has more than tripled ...
    • 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 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 ...
    • First-time Migration in Juvenile Common Cuckoos Documented by Satellite Tracking 

      Vega, Marta Lomas; Willemoes, Mikkel; Thomson, Robert L.; Tolvanen, Jere; Rutila, Jarkko; Samas, Peter; Strandberg, Roine; Grim, Tomas; Fossøy, Frode; Stokke, Bård Gunnar; Thorup, Kasper (Journal article; Peer reviewed, 2016)
      Being an obligate parasite, juvenile common cuckoos Cuculus canorus are thought to reach their African wintering grounds from Palearctic breeding grounds without guidance from experienced conspecifics but this has not been ...
    • Framande artar med planteimport. Framlegg til tiltak og overvaking 

      Bruteig, Inga; Dahle, Sondre; Endrestøl, Anders; Fossøy, Frode; Hanssen, Oddvar; Often, Anders; Staverløkk, Arnstein; Westergaard, Kristine Bakke; Åström, Jens (NINA Kortrapport;39, Research report, 2016)
      Bruteig, I. E., Dahle, S., Endrestøl, A., Fossøy, F., Hanssen, O., Often, A., Staverløkk, A., Westergaard, K. B. og Åström, J. 2016. Framande artar med planteimport. Framlegg til tiltak og overvaking. – NINA Kortrapport ...
    • Fremmede arter: import av planteprodukter. Overvåking og metodeutvikling 2017 

      Westergaard, Kristine Bakke; Endrestøl, Anders; Often, Anders; Hanssen, Oddvar; Åström, Jens; Fossøy, Frode; Kyrkjeeide, Magni Olsen (NINA Rapport;1397, Research report, 2017)
      Westergaard, K.B., Endrestøl, A., Often, A., Hanssen, O., Åström, J., Fossøy, F. & Kyrkjeeide, M.O. 2017. Fremmede arter: import av planteprodukter. Overvåking og metodeutvikling 2017 – NINA Rapport 1397. 23 s. I denne ...
    • Fremmede arter ved planteimport – Kartlegging og overvåking 2014–2016 

      Bruteig, Inga E.; Endrestøl, Anders; Westergaard, Kristine Bakke; Hanssen, Oddvar; Often, Anders; Åström, Jens; Fossøy, Frode; Dahle, Sondre; Staverløkk, Arnstein; Stabbetorp, Odd; Ødegaard, Frode (NINA Rapport;1329, Research report, 2017)
      Bruteig, I.E., Endrestøl, A., Westergaard, K.B., Hanssen, O., Often, A., Åström, J., Fossøy, F., Dahle, S., Staverløkk, A., Stabbetorp, O. og Ødegaard, F. 2017. Fremmede arter ved planteimport – Kartlegging og overvåking ...