Blar i Publikasjoner fra CRIStin - NINA på forfatter "Viljugrein, Hildegunn"
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A method that accounts for differential detectability in mixed samples of long-term infections with applications to the case of Chronic Wasting Disease in cervids
Viljugrein, Hildegunn; Hopp, Petter; Benestad, Sylvie Lafond; Nilsen, Erlend Birkeland; Våge, Jørn; Tavornpanich, Saraya; Rolandsen, Christer Moe; Strand, Olav; Mysterud, Atle (Journal article; Peer reviewed, 2018)1. Surveillance of wildlife diseases is logistically difficult, and imperfect detection is a recurrent challenge for disease estimation. Using citizen science can increase sample sizes, but it is associated with a cost in ... -
A stage-structured Bayesian hierarchical model for salmon lice populations at individual salmon farms – Estimated from multiple farm data sets
Aldrin, Magne Tommy; Huseby, Ragnar Bang; Stien, Audun; Grøntvedt, Randi Nygaard; Viljugrein, Hildegunn; Jansen, Peder A (Journal article; Peer reviewed, 2017)Salmon farming has become a prosperous international industry over the last decades. Along with growth in the production farmed salmon, however, an increasing threat by pathogens has emerged. Of special concern is the ... -
Large scale modelling of salmon lice (Lepeophtheirus salmonis)infection pressure based on lice monitoring data from Norwegian salmonid farms
Kristoffersen, Anja Bråthen; Jimenez, Daniel Delgado; Viljugrein, Hildegunn; Grøntvedt, Randi; Stien, Audun; Jansen, Peder A (Peer reviewed; Journal article, 2014)Infection by parasitic sea lice is a substantial problem in industrial scale salmon farming. To controlthe problem, Norwegian salmonid farms are not permitted to exceed a threshold level of infection ontheir fish, and farms ... -
Phenology of deer ked (Lipoptena cervi) host-seeking flight activity and its relationship with prevailing autumn weather
Mysterud, Atle; Madslien, Knut; Herland, Anders; Viljugrein, Hildegunn; Ytrehus, Bjørnar (Peer reviewed; Journal article, 2016)Background: The deer ked (Lipoptena cervi) is an ectoparasite on cervids that has invaded large parts of Norway, Sweden and Finland during recent decades. During their host-seeking flight activity, the adult deer keds ...