Browsing USN Open Archive by Author "Bergan, Frode"
Now showing items 1-7 of 7
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Development and evaluation of 16 new microsatellite loci for the rock ptarmigan (Lagopus muta) and cross-species amplification for the willow grouse (L. lagopus)
Costanzi, Jean-Marc; Bergan, Frode; Sæbø, Mona; Jenkins, Andrew; Steifetten, Øyvind (Journal article; Peer reviewed, 2018)Abstract The genetic markers designed for this study can facilitate future genetic studies on the rock ptarmigan (Lagopus muta). To our knowledge no microsatellite markers have ever been developed specifically for this ... -
Evaluation of in-field DNA degradation of mitochondrial- and genomic DNA in snowsampled faecal pellets from rock ptarmigan (Lagopus muta)
Bergan, Frode (Master thesis, 2011)The use of non invasive genetic sampling (NGS) have become increasingly relevant in genetic studies applied to ecology. Reliable methods should be tailored to species and environments. Rock ptarmigan (Lagopus muta) spend ... -
Fiskebiologiske undersøkelser i forbindelse med pålegg om fysiske utbedringer i Vallaråi, Seljord i Telemark
Heggenes, Jan; Bergan, Frode; Lydersen, Espen (HiT skrift, Research report, 2011-12-15)Den 1,2 km lange Vallaråi, innløp Seljordsvatn i Seljord kommune, har et sterkt modifisert elveleie og vannførings- og temperaturregime, hovedsakelig som følge av reguleringsinngrep, bl.a. betydelig grad av effektkjøring. ... -
Free-ranging Eurasian beavers, Castor fiber, deposit anal gland secretion when scent marking
Rosell, Frank; Bergan, Frode (Journal article; Peer reviewed, 1998)Two adult free-ranging Eurasian Beavers (Castor fiber) were observed depositing anal gland secretion at the border of thei territory byeverting the "cloaca", protruding the anal gland openings and rubbing them against the ... -
Norwegian rock ptarmigan ectoparasites: chewing lice (Phthiraptera, Ischnocera) and feather mites (Astigmata, Psoroptidia)
Skírnisson, Karl; Bergan, Frode; Nielsen, Olafur K. (Peer reviewed; Journal article, 2021)Feather mites (Astigmata, Psoroptidia), quill mites (Prostigmata, Syringophilidae) and chewing lice (Phthiraptera) are prominent parts of avian ectoparasites communities. Much attention has been directed to chewing lice ... -
Rehabilitering av elvehabitat i Vallaråi, Seljord i Telemark: Forslag til tiltak
Heggenes, Jan; Bergan, Frode; Lydersen, Espen; Sageie, Jostein (HiT skrift, Research report, 2013-02-04)Den 1,2 km lange Vallaråi, Seljord kommune, har et sterkt modifisert elveleie og vannførings- og temperaturregime, hovedsakelig som følge av reguleringsinngrep og betydelig grad av effektkjøring. Elva har en lokal bestand ... -
Scent-marking in the Eurasian beaver (Castor fiber) as a means of territory defense
Rosell, Frank; Bergan, Frode; Parker, Howard (Journal article; Peer reviewed, 1998)Beaver (Castor spp.) normally scent mark by depositing castoreum and/or anal gland secretion on scent mounds close to the water's edge. The aim of this study was to investigate the hypothesis that the Eurasian beaver (C. ...