Blar i NTNU Open på forfatter "Fossøy, Frode"
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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 ... -
Environmental correlates of variation in a holistic analysis of annual offspring production in the high Arctic songbird snow bunting (Plectrophenax nivalis) on Spitsbergen
Egil Lillehaug (Master thesis, 2019)Klima og vær er viktige abiotiske faktorer som påvirker organismer, spesielt i områder med store værforskjeller, som Arktis. Hvordan været påvirker reproduksjonssuksessen til en fugl som hekker der er spesielt interessant ... -
Finding the needle in the haystack: Comparison of methods for salmon louse enumeration in plankton samples
Bui, Samantha; Dalvin, Sussie; Vågseth, Tone; Oppedal, Frode; Fossøy, Frode; Brandsegg, Hege; Jacobsen, Ása; Nordi, Gunnvør á; Fordyce, Mark; Michelsen, Helena Kling; Finstad, Bengt; Skern-Mauritzen, Rasmus (Peer reviewed; Journal article, 2021)The economic and social implications of salmon louse (Lepeophtheirus salmonis) epidemics in salmon aquaculture drive focus of the dispersal dynamics of the planktonic larval stages. The vast spatial scale and high connectivity ... -
First record of Common Tailorbird (Orthotomus sutorius) parasitism by Plaintive Cuckoo (Cacomantis merulinus) in Bangladesh
Nahid, Mominul Islam; Fossøy, Frode; Begum, Sajeda; Røskaft, Eivin; Stokke, Bård Gunnar (Peer reviewed; Journal article, 2016)The Plaintive Cuckoo (Cacomantis merulinus) is a widespread brood parasite in Asia, but no data on host species utilization in Bangladesh exist. By searching for nests of all possible host species of the Plaintive Cuckoo ... -
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 ... -
From Svalbard to Siberia: Passerines breeding in the High Arctic also endure the Extreme cold of the Western Steppe
Snell, Katherine R. S.; Stokke, Bård Gunnar; Moksnes, Arne; Thorup, Kasper; Fossøy, Frode (Journal article; Peer reviewed, 2018)Few species are adapted to high latitudes, and many over-winter in milder climates with migrations involving extensive barrier crossings. By escaping extreme conditions for the majority of the year, physiological and ... -
How does human disturbance affect brood parasitism and nest predation in hosts inhabiting a highly fragmented landscape?
Nahid, Mominul Islam; Fossøy, Frode; Stokke, Bård Gunnar; Begum, Sajeda; Røskaft, Eivin; Ranke, Peter Sjolte (Peer reviewed; Journal article, 2020)Human disturbance represents a considerable challenge for the conservation of living organisms and has profound negative impacts globally. There is substantial variation in how species respond to human disturbance. The ... -
Human habituation reduces hyrax flight initiation distance in Serengeti
Mbise, Franco Peniel; Fredriksen, Kari-Elise; Ranke, Peter Sjolte; Jackson, Craig Ryan; Fyumagwa, Robert D.; Holmern, Tomas; Fossøy, Frode; Røskaft, Eivin (Journal article; Peer reviewed, 2019)Many animal populations are exposed to disturbance originating from human activities. In response to human disturbance, certain animals display a variety of potentially costly behavioural responses, such as increased ... -
Introducing guidelines for publishing DNA-derived occurrence data through biodiversity data platforms
Nilsson, R. Henrik; Andersson, Anders F.; Bissett, Andrew; Finstad, Anders Gravbrøt; Fossøy, Frode; Grosjean, Marie; Hope, Michael; Jeppesen, Thomas S.; Kõljalg, Urmas; Lundin, Daniel; Prager, Maria; Suominen, Saara; Svenningsen, Cecilie S.; Schigel, Dmitry (Peer reviewed; Journal article, 2022)DNA sequencing efforts of environmental and other biological samples disclose unprecedented and largely untapped opportunities for advances in the taxonomy, ecology, and geographical distributions of our living world. To ... -
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- ... -
Modelling the maintenance of egg polymorphism in avian brood parasites and their hosts
Liang, Wei; Yang, Canchao; Stokke, Bård Gunnar; Antonov, Anton Tinchov; Fossøy, Frode; Vikan, Johan Reinert; Moksnes, Arne; Røskaft, Eivin; Shykoff, Jacqui A.; Møller, Anders Pape; Takasu, Fugo (Journal article, 2012)In avian brood parasitism, egg phenotype plays a key role for both host and parasite reproduction. Several parrotbill species of the genus Paradoxornis are parasitized by the common cuckoo Cuculus canorus, and clear ... -
Molecular quantification of parasitic sea louse larvae depends on species and life stage
Mertz, Nathan Edward; Paterson, Rachel; Finstad, Bengt; Brandsegg, Hege; Andersskog, Ida Pernille Øystese; Fossøy, Frode (Peer reviewed; Journal article, 2023)Sea lice cause substantial economic and environmental harm to Norway's aquacul-ture industry and wild salmonid populations. Rapid, accurate quantification of lice larval densities in coastal waters remains the greatest ... -
No evidence of handling‐induced mortality in Serengeti's African wild dog population
Jackson, Craig Ryan; Masenga, Emmanuel Hosiana; Mjingo, Ernest E.; Davies, Andrew B.; Fossøy, Frode; Fyumagwa, Robert D.; Røskaft, Eivin; May, Roelof Frans (Journal article; Peer reviewed, 2018)The disappearance of an endangered African wild dog population from Serengeti National Park (SNP) led to international debate centered around one question: were researchers to blame? The “Burrows' hypothesis” postulated ... -
No evidence of host-specific egg mimicry in Asian koels
Nahid, Mominul Islam; Fossøy, Frode; Stokke, Bård Gunnar; Abernathy, Virginia; Begum, Sajeda; Langmore, Naomi E.; Røskaft, Eivin; Ranke, Peter Sjolte (Peer reviewed; Journal article, 2021)Avian brood parasitism is costly for the host, in many cases leading to the evolution of defenses like discrimination of parasitic eggs. The parasite, in turn, may evolve mimetic eggs as a counter-adaptation to host egg ... -
Outcomes of brood parasite-host interactions mediated by egg matching: Common cuckoos Cuculus canorus versus Fringilla finches
Vikan, Johan Reinert; Fossøy, Frode; Huhta, Esa; Moksnes, Arne; Røskaft, Eivin; Stokke, Bård Gunnar (Journal article; Peer reviewed, 2011)Background: Antagonistic species often interact via matching of phenotypes, and interactions between brood parasitic common cuckoos (Cuculus canorus) and their hosts constitute classic examples. The outcome of a parasitic ... -
Plaintive Cuckoo Nestling Adaptations and Development in Common Tailorbird Nests - Costly Child Custody
Tunheim, Odd Helge (Master thesis, 2015)Avian brood parasitism represents a suitable system for studying coevolution, as parasite and host engage in an escalating arms race. The parasite develops adaptations to overcome host defences, and in addition develops ... -
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 ... -
Possible Anthropogenic Sources of Toxic Elements in Snow Bunting Nestlings (Plectrophenax nivalis) in Adventdalen, Svalbard.
Sørhus, Hanna Sofie (Master thesis, 2017)The Arctic environment is exposed to natural and anthropogenic contamination as a result of local, regional and global pollution. Contaminants accumulating in the Arctic may influence both biotic and abiotic factors. ... -
Predator–prey interactions in the Arctic: DNA metabarcoding reveals that nestling diet of snow buntings reflects arthropod seasonality
Stolz, Christian; Varpe, Øystein; Ims, Rolf Anker; Sandercock, Brett Kevin; Stokke, Bård Gunnar; Fossøy, Frode (Peer reviewed; Journal article, 2023)Tundra arthropods are of considerable ecological importance as a seasonal food source for many arctic-breeding birds. Dietary composition and food preferences are rarely known, complicating assessments of ecological ... -
Reviewing 30 years of studies on the Common Cuckoo - accumulated knowledge and future perspectives
Moksnes, Arne; Fossøy, Frode; Røskaft, Eivin; Stokke, Bård Gunnar (Journal article, 2013)In Europe, eggs of the Common Cuckoo (Cuculus canorus) have been found in more than 125 different host species. However, very few species are frequently parasitized. The Cuckoo is divided into several distinct races termed ...